AWS Cloud9 rubyのバージョンを下げたい

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1. 

   @PG_T

   Questioner

   more_horiz

   ご回答いただきありがとうございます。

   RVMのインストールまではできたのですが、そのあと、下記コマンドにてRuby2.5をインストールしようとしたら、エラーが出てしまいました。
   $ rvm install 2.5

   何か原因がお分かりになれば、教えていただけると幸いです。

   ターミナルの表示と、make.logファイルを以下に示します。

   ターミナル

   ec2-user:~/environment $ rvm install 2.5
   Searching for binary rubies, this might take some time.
   No binary rubies available for: amazon/2023/x86_64/ruby-2.5.8.
   Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
   Checking requirements for amazon.
   Requirements installation successful.
   Installing Ruby from source to: /home/ec2-user/.rvm/rubies/ruby-2.5.8, this may take a while depending on your cpu(s)...
   ruby-2.5.8 - #downloading ruby-2.5.8, this may take a while depending on your connection...
     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
   e depending on your cpu(s)...ruby-2.5.8 - #downloading ruby-2.5.8, this may take a while depending on your connection...
     % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current                                 Dload  Upload   Total   Spent    Left  Speed
   100 13.1M  100 13.1M    0     0  15.8M      0 --:--:-- --:--:-- --:--:-- 15.8Mruby-2.5.8 - #extracting ruby-2.5.8 to /home/ec2-user/.rvm/src/ruby-2.5.8.....
   ruby-2.5.8 - #configuring...................................................................
   ruby-2.5.8 - #post-configuration..
   ruby-2.5.8 - #compiling...................................................................................................................................................
   Error running '__rvm_make -j1',
   please read /home/ec2-user/.rvm/log/1710401215_ruby-2.5.8/make.log
   

   make.log

   [2024-03-14 07:27:30] __rvm_make
   __rvm_make () 
   { 
       \make "$@" || return $?
   }
   current path: /home/ec2-user/.rvm/src/ruby-2.5.8
   GEM_PATH=/home/ec2-user/.rvm/gems/ruby-3.2.1:/home/ec2-user/.rvm/gems/ruby-3.2.1@global
   GEM_HOME=/home/ec2-user/.rvm/gems/ruby-3.2.1
   PATH=/home/ec2-user/.rvm/gems/ruby-3.2.1/bin:/home/ec2-user/.rvm/gems/ruby-3.2.1@global/bin:/home/ec2-user/.rvm/rubies/ruby-3.2.1/bin:/home/ec2-user/.nvm/versions/node/v20.11.1/bin:/home/ec2-user/.rvm/gems/ruby-3.2.1/bin:/home/ec2-user/.rvm/gems/ruby-3.2.1@global/bin:/home/ec2-user/.rvm/rubies/ruby-3.2.1/bin:/home/ec2-user/.rvm/gems/ruby-3.2.1/bin:/home/ec2-user/.rvm/gems/ruby-3.2.1@global/bin:/home/ec2-user/.rvm/rubies/ruby-3.2.1/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/ec2-user/.local/bin:/home/ec2-user/bin:/usr/local/bin:/home/ec2-user/.rvm/bin:/home/ec2-user/.local/bin:/home/ec2-user/bin:/usr/local/bin:/home/ec2-user/.rvm/bin:/home/ec2-user/.local/bin:/home/ec2-user/bin:/usr/local/bin:/home/ec2-user/.rvm/bin
   command(2): __rvm_make -j1
   ++ make -j1
   	CC = gcc
   	LD = ld
   	LDSHARED = gcc -shared
   	CFLAGS = -O3 -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wno-tautological-compare -Wno-parentheses-equality -Wno-constant-logical-operand -Wno-self-assign -Wunused-variable -Wimplicit-int -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration -Wdeprecated-declarations -Wmisleading-indentation -Wno-packed-bitfield-compat -Wsuggest-attribute=noreturn -Wsuggest-attribute=format -Wimplicit-fallthrough=0 -Wduplicated-cond -Wrestrict -std=gnu99  -fPIC 
   	XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector -fno-strict-overflow -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT
   	CPPFLAGS =   -I. -I.ext/include/x86_64-linux -I./include -I. -I./enc/unicode/10.0.0
   	DLDFLAGS = -Wl,--compress-debug-sections=zlib -Wl,-soname,libruby.so.2.5  -fstack-protector  
   	SOLIBS = -lpthread -ldl -lcrypt -lm  
   	LANG = C.UTF-8
   	LC_ALL = 
   	LC_CTYPE = 
   gcc (GCC) 11.4.1 20230605 (Red Hat 11.4.1-2)
   Copyright (C) 2021 Free Software Foundation, Inc.
   This is free software; see the source for copying conditions.  There is NO
   warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   
   compiling ./main.c
   compiling dmydln.c
   compiling miniinit.c
   compiling dmyext.c
   compiling miniprelude.c
   translating probes probes.d
   compiling array.c
   compiling bignum.c
   compiling class.c
   In file included from ./include/ruby.h:33,
                    from internal.h:15,
                    from class.c:26:
   class.c: In function ‘move_refined_method’:
   class.c:955:30: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     955 |             RB_OBJ_WRITE(me, &me->def->body.refined.orig_me, NULL);
   ./include/ruby/ruby.h:1439:75: note: in definition of macro ‘RB_OBJ_WRITE’
    1439 | #define RB_OBJ_WRITE(a, slot, b)       rb_obj_write((VALUE)(a), (VALUE *)(slot), (VALUE)(b), __FILE__, __LINE__)
         |                                                                           ^~~~
   class.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling compar.c
   compiling compile.c
   compile.c: In function ‘iseq_set_exception_table’:
   compile.c:2205:21: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    2205 |             entry = &table->entries[i];
         |                     ^~~~~~~~~~~~~~~~~~
   compile.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling complex.c
   compiling cont.c
   compiling debug.c
   compiling debug_counter.c
   compiling dir.c
   compiling dln_find.c
   compiling encoding.c
   compiling enum.c
   compiling enumerator.c
   compiling error.c
   compiling eval.c
   compiling file.c
   compiling gc.c
   gc.c: In function ‘make_io_zombie’:
   gc.c:2162:32: warning: cast between incompatible function types from ‘int (*)(rb_io_t *)’ to ‘void (*)(void *)’ [-Wcast-function-type]
    2162 |     make_zombie(objspace, obj, (void (*)(void*))rb_io_fptr_finalize, fptr);
         |                                ^
   gc.c: In function ‘mark_current_machine_context’:
   gc.c:4264:36: warning: expression does not compute the number of elements in this array; element type is ‘struct __jmp_buf_tag’, not ‘VALUE’ {aka ‘long unsigned int’} [-Wsizeof-array-div]
    4264 |         VALUE v[sizeof(rb_jmp_buf) / sizeof(VALUE)];
         |                                    ^
   gc.c:4264:36: note: add parentheses around the second ‘sizeof’ to silence this warning
   gc.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling hash.c
   compiling inits.c
   compiling io.c
   compiling iseq.c
   iseq.c: In function ‘rb_iseq_disasm’:
   iseq.c:1717:58: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1717 |             const struct iseq_catch_table_entry *entry = &iseq->body->catch_table->entries[i];
         |                                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   iseq.c: In function ‘rb_iseq_all_children’:
   iseq.c:1812:58: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1812 |             const struct iseq_catch_table_entry *entry = &iseq->body->catch_table->entries[i];
         |                                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   iseq.c: In function ‘iseq_data_to_ary’:
   iseq.c:2333:54: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    2333 |         const struct iseq_catch_table_entry *entry = &iseq->body->catch_table->entries[i];
         |                                                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   iseq.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling load.c
   compiling marshal.c
   compiling math.c
   compiling node.c
   compiling numeric.c
   compiling object.c
   compiling pack.c
   compiling parse.c
   compiling proc.c
   compiling process.c
   process.c: In function ‘handle_fork_error’:
   process.c:3271:24: warning: cast between incompatible function types from ‘void (*)(int)’ to ‘VALUE (*)()’ {aka ‘long unsigned int (*)()’} [-Wcast-function-type]
    3271 |             rb_protect((VALUE (*)())rb_thread_sleep, 1, &state);
         |                        ^
   process.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling random.c
   compiling range.c
   compiling rational.c
   compiling re.c
   compiling regcomp.c
   compiling regenc.c
   compiling regerror.c
   compiling regexec.c
   compiling regparse.c
   compiling regsyntax.c
   compiling ruby.c
   compiling safe.c
   compiling signal.c
   signal.c: In function ‘ruby_signal’:
   signal.c:599:31: warning: cast between incompatible function types from ‘ruby_sighandler_t’ {aka ‘void (*)(int)’} to ‘void (*)(int,  siginfo_t *, void *)’ [-Wcast-function-type]
     599 |         sigact.sa_sigaction = (ruby_sigaction_t*)handler;
         |                               ^
   signal.c:628:19: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ to ‘void (*)(int)’ [-Wcast-function-type]
     628 |         handler = (sighandler_t)old.sa_sigaction;
         |                   ^
   signal.c: In function ‘default_handler’:
   signal.c:1101:16: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ to ‘void (*)(int)’ [-Wcast-function-type]
    1101 |         func = (sighandler_t)sigbus;
         |                ^
   signal.c:1106:16: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ to ‘void (*)(int)’ [-Wcast-function-type]
    1106 |         func = (sighandler_t)sigsegv;
         |                ^
   signal.c: In function ‘Init_signal’:
   signal.c:1522:36: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ to ‘void (*)(int)’ [-Wcast-function-type]
    1522 |         install_sighandler(SIGBUS, (sighandler_t)sigbus);
         |                                    ^
   signal.c:1389:15: note: in definition of macro ‘INSTALL_SIGHANDLER’
    1389 |         if (!(cond)) break; \
         |               ^~~~
   signal.c:1522:9: note: in expansion of macro ‘install_sighandler’
    1522 |         install_sighandler(SIGBUS, (sighandler_t)sigbus);
         |         ^~~~~~~~~~~~~~~~~~
   signal.c:1525:36: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ to ‘void (*)(int)’ [-Wcast-function-type]
    1525 |         install_sighandler(SIGILL, (sighandler_t)sigill);
         |                                    ^
   signal.c:1389:15: note: in definition of macro ‘INSTALL_SIGHANDLER’
    1389 |         if (!(cond)) break; \
         |               ^~~~
   signal.c:1525:9: note: in expansion of macro ‘install_sighandler’
    1525 |         install_sighandler(SIGILL, (sighandler_t)sigill);
         |         ^~~~~~~~~~~~~~~~~~
   signal.c:1531:37: warning: cast between incompatible function types from ‘void (*)(int,  siginfo_t *, void *)’ to ‘void (*)(int)’ [-Wcast-function-type]
    1531 |         install_sighandler(SIGSEGV, (sighandler_t)sigsegv);
         |                                     ^
   signal.c:1389:15: note: in definition of macro ‘INSTALL_SIGHANDLER’
    1389 |         if (!(cond)) break; \
         |               ^~~~
   signal.c:1531:9: note: in expansion of macro ‘install_sighandler’
    1531 |         install_sighandler(SIGSEGV, (sighandler_t)sigsegv);
         |         ^~~~~~~~~~~~~~~~~~
   signal.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling sprintf.c
   compiling st.c
   compiling strftime.c
   strftime.c: In function ‘rb_strftime_with_timespec’:
   strftime.c:385:39: warning: comparison is always false due to limited range of data type [-Wtype-limits]
     385 |                         if (vtm->wday < 0 || vtm->wday > 6)
         |                                       ^
   strftime.c:396:39: warning: comparison is always false due to limited range of data type [-Wtype-limits]
     396 |                         if (vtm->wday < 0 || vtm->wday > 6)
         |                                       ^
   strftime.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling string.c
   compiling struct.c
   compiling symbol.c
   compiling thread.c
   In file included from thread.c:66:
   thread_sync.c: In function ‘queue_alloc’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:568:24: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     568 | #define queue_waitq(q) UNALIGNED_MEMBER_PTR(q, waitq)
         |                        ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:613:20: note: in expansion of macro ‘queue_waitq’
     613 |     list_head_init(queue_waitq(q));
         |                    ^~~~~~~~~~~
   thread_sync.c: In function ‘queue_fork_check’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:568:24: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     568 | #define queue_waitq(q) UNALIGNED_MEMBER_PTR(q, waitq)
         |                        ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:627:20: note: in expansion of macro ‘queue_waitq’
     627 |     list_head_init(queue_waitq(q));
         |                    ^~~~~~~~~~~
   thread_sync.c: In function ‘szqueue_alloc’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:576:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     576 | #define szqueue_waitq(sq) UNALIGNED_MEMBER_PTR(sq, q.waitq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:671:20: note: in expansion of macro ‘szqueue_waitq’
     671 |     list_head_init(szqueue_waitq(sq));
         |                    ^~~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:672:20: note: in expansion of macro ‘szqueue_pushq’
     672 |     list_head_init(szqueue_pushq(sq));
         |                    ^~~~~~~~~~~~~
   thread_sync.c: In function ‘szqueue_ptr’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:683:24: note: in expansion of macro ‘szqueue_pushq’
     683 |         list_head_init(szqueue_pushq(sq));
         |                        ^~~~~~~~~~~~~
   thread_sync.c: In function ‘rb_queue_initialize’:
   thread_sync.c:773:24: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     773 |     RB_OBJ_WRITE(self, &q->que, ary_buf_new());
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:773:5: note: in expansion of macro ‘RB_OBJ_WRITE’
     773 |     RB_OBJ_WRITE(self, &q->que, ary_buf_new());
         |     ^~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:568:24: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     568 | #define queue_waitq(q) UNALIGNED_MEMBER_PTR(q, waitq)
         |                        ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:774:20: note: in expansion of macro ‘queue_waitq’
     774 |     list_head_init(queue_waitq(q));
         |                    ^~~~~~~~~~~
   thread_sync.c: In function ‘queue_do_push’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:568:24: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     568 | #define queue_waitq(q) UNALIGNED_MEMBER_PTR(q, waitq)
         |                        ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:785:16: note: in expansion of macro ‘queue_waitq’
     785 |     wakeup_one(queue_waitq(q));
         |                ^~~~~~~~~~~
   thread_sync.c: In function ‘rb_queue_close’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:568:24: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     568 | #define queue_waitq(q) UNALIGNED_MEMBER_PTR(q, waitq)
         |                        ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:828:20: note: in expansion of macro ‘queue_waitq’
     828 |         wakeup_all(queue_waitq(q));
         |                    ^~~~~~~~~~~
   In file included from vm_core.h:68,
                    from eval_intern.h:5,
                    from thread.c:66:
   thread_sync.c: In function ‘queue_do_pop’:
   thread_sync.c:920:27: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     920 |             list_add_tail(&qw.as.q->waitq, &qw.w.node);
         |                           ^~~~~~~~~~~~~~~
   ccan/list/list.h:195:44: note: in definition of macro ‘list_add_tail’
     195 | #define list_add_tail(h, n) list_add_tail_(h, n, LIST_LOC)
         |                                            ^
   In file included from thread.c:66:
   thread_sync.c: In function ‘rb_szqueue_initialize’:
   thread_sync.c:1046:24: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1046 |     RB_OBJ_WRITE(self, &sq->q.que, ary_buf_new());
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:1046:5: note: in expansion of macro ‘RB_OBJ_WRITE’
    1046 |     RB_OBJ_WRITE(self, &sq->q.que, ary_buf_new());
         |     ^~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:576:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     576 | #define szqueue_waitq(sq) UNALIGNED_MEMBER_PTR(sq, q.waitq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1047:20: note: in expansion of macro ‘szqueue_waitq’
    1047 |     list_head_init(szqueue_waitq(sq));
         |                    ^~~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1048:20: note: in expansion of macro ‘szqueue_pushq’
    1048 |     list_head_init(szqueue_pushq(sq));
         |                    ^~~~~~~~~~~~~
   thread_sync.c: In function ‘rb_szqueue_close’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_queue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:576:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     576 | #define szqueue_waitq(sq) UNALIGNED_MEMBER_PTR(sq, q.waitq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1073:20: note: in expansion of macro ‘szqueue_waitq’
    1073 |         wakeup_all(szqueue_waitq(sq));
         |                    ^~~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1074:20: note: in expansion of macro ‘szqueue_pushq’
    1074 |         wakeup_all(szqueue_pushq(sq));
         |                    ^~~~~~~~~~~~~
   thread_sync.c: In function ‘rb_szqueue_max_set’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1112:37: note: in expansion of macro ‘szqueue_pushq’
    1112 |     while (diff-- > 0 && wakeup_one(szqueue_pushq(sq))) {
         |                                     ^~~~~~~~~~~~~
   thread_sync.c: In function ‘rb_szqueue_push’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1158:39: note: in expansion of macro ‘szqueue_pushq’
    1158 |             struct list_head *pushq = szqueue_pushq(sq);
         |                                       ^~~~~~~~~~~~~
   thread_sync.c: In function ‘szqueue_do_pop’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1184:20: note: in expansion of macro ‘szqueue_pushq’
    1184 |         wakeup_one(szqueue_pushq(sq));
         |                    ^~~~~~~~~~~~~
   thread_sync.c: In function ‘rb_szqueue_clear’:
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_szqueue’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   thread_sync.c:577:27: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     577 | #define szqueue_pushq(sq) UNALIGNED_MEMBER_PTR(sq, pushq)
         |                           ^~~~~~~~~~~~~~~~~~~~
   thread_sync.c:1223:16: note: in expansion of macro ‘szqueue_pushq’
    1223 |     wakeup_all(szqueue_pushq(sq));
         |                ^~~~~~~~~~~~~
   thread.c: In function ‘rb_set_coverages’:
   thread.c:5194:24: warning: cast between incompatible function types from ‘void (*)(VALUE,  const rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  const struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    5194 |     rb_add_event_hook2((rb_event_hook_func_t) update_line_coverage, RUBY_EVENT_COVERAGE_LINE, Qnil, RUBY_EVENT_HOOK_FLAG_SAFE | RUBY_EVENT_HOOK_FLAG_RAW_ARG);
         |                        ^
   thread.c:5196:28: warning: cast between incompatible function types from ‘void (*)(VALUE,  const rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  const struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    5196 |         rb_add_event_hook2((rb_event_hook_func_t) update_branch_coverage, RUBY_EVENT_COVERAGE_BRANCH, Qnil, RUBY_EVENT_HOOK_FLAG_SAFE | RUBY_EVENT_HOOK_FLAG_RAW_ARG);
         |                            ^
   thread.c:5199:28: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    5199 |         rb_add_event_hook2((rb_event_hook_func_t) update_method_coverage, RUBY_EVENT_CALL, me2counter, RUBY_EVENT_HOOK_FLAG_SAFE | RUBY_EVENT_HOOK_FLAG_RAW_ARG);
         |                            ^
   thread.c: In function ‘rb_reset_coverages’:
   thread.c:5221:26: warning: cast between incompatible function types from ‘void (*)(VALUE,  const rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  const struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    5221 |     rb_remove_event_hook((rb_event_hook_func_t) update_line_coverage);
         |                          ^
   thread.c:5223:30: warning: cast between incompatible function types from ‘void (*)(VALUE,  const rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  const struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    5223 |         rb_remove_event_hook((rb_event_hook_func_t) update_branch_coverage);
         |                              ^
   thread.c:5226:30: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    5226 |         rb_remove_event_hook((rb_event_hook_func_t) update_method_coverage);
         |                              ^
   thread.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling time.c
   compiling transcode.c
   compiling util.c
   compiling variable.c
   compiling version.c
   compiling vm.c
   In file included from vm.c:300:
   vm_insnhelper.c: In function ‘vm_throw_start’:
   vm_insnhelper.c:1109:77: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1109 |                         const struct iseq_catch_table_entry * const entry = &ct->entries[i];
         |                                                                             ^~~~~~~~~~~~~~~
   In file included from vm.c:300:
   vm_insnhelper.c: In function ‘vm_method_cfunc_entry’:
   vm_insnhelper.c:1892:12: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1892 |     return &me->def->body.cfunc;
         |            ^~~~~~~~~~~~~~~~~~~~
   In file included from vm.c:18:
   vm_insnhelper.c: In function ‘aliased_callable_method_entry’:
   vm_insnhelper.c:2182:30: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    2182 |             RB_OBJ_WRITE(me, &me->def->body.alias.original_me, cme);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_insnhelper.c:2182:13: note: in expansion of macro ‘RB_OBJ_WRITE’
    2182 |             RB_OBJ_WRITE(me, &me->def->body.alias.original_me, cme);
         |             ^~~~~~~~~~~~
   vm_method.c: In function ‘method_definition_set’:
   vm_method.c:238:34: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     238 |                 RB_OBJ_WRITE(me, &def->body.iseq.iseqptr, iseq_body->iseqptr);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:238:17: note: in expansion of macro ‘RB_OBJ_WRITE’
     238 |                 RB_OBJ_WRITE(me, &def->body.iseq.iseqptr, iseq_body->iseqptr);
         |                 ^~~~~~~~~~~~
   vm_method.c:249:34: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     249 |                 RB_OBJ_WRITE(me, &def->body.iseq.cref, method_cref);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:249:17: note: in expansion of macro ‘RB_OBJ_WRITE’
     249 |                 RB_OBJ_WRITE(me, &def->body.iseq.cref, method_cref);
         |                 ^~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:255:43: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     255 |                 setup_method_cfunc_struct(UNALIGNED_MEMBER_PTR(def, body.cfunc), cfunc->func, cfunc->argc);
         |                                           ^~~~~~~~~~~~~~~~~~~~
   vm_method.c:271:38: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     271 |                     RB_OBJ_WRITE(me, &def->body.attr.location, rb_ary_freeze(location));
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:271:21: note: in expansion of macro ‘RB_OBJ_WRITE’
     271 |                     RB_OBJ_WRITE(me, &def->body.attr.location, rb_ary_freeze(location));
         |                     ^~~~~~~~~~~~
   vm_method.c:279:30: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     279 |             RB_OBJ_WRITE(me, &def->body.proc, (VALUE)opts);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:279:13: note: in expansion of macro ‘RB_OBJ_WRITE’
     279 |             RB_OBJ_WRITE(me, &def->body.proc, (VALUE)opts);
         |             ^~~~~~~~~~~~
   eval_intern.h:173:64: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     173 | #define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem)
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:282:39: note: in expansion of macro ‘UNALIGNED_MEMBER_PTR’
     282 |             setup_method_cfunc_struct(UNALIGNED_MEMBER_PTR(def, body.cfunc), rb_f_notimplement, -1);
         |                                       ^~~~~~~~~~~~~~~~~~~~
   vm_method.c:290:34: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     290 |                 RB_OBJ_WRITE(me, &def->body.refined.orig_me, refined->orig_me);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:290:17: note: in expansion of macro ‘RB_OBJ_WRITE’
     290 |                 RB_OBJ_WRITE(me, &def->body.refined.orig_me, refined->orig_me);
         |                 ^~~~~~~~~~~~
   vm_method.c:291:34: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     291 |                 RB_OBJ_WRITE(me, &def->body.refined.owner, refined->owner);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:291:17: note: in expansion of macro ‘RB_OBJ_WRITE’
     291 |                 RB_OBJ_WRITE(me, &def->body.refined.owner, refined->owner);
         |                 ^~~~~~~~~~~~
   vm_method.c:295:30: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
     295 |             RB_OBJ_WRITE(me, &def->body.alias.original_me, (rb_method_entry_t *)opts);
   eval_intern.h:171:40: note: in definition of macro ‘UNALIGNED_MEMBER_ACCESS’
     171 | # define UNALIGNED_MEMBER_ACCESS(expr) expr
         |                                        ^~~~
   vm_method.c:295:13: note: in expansion of macro ‘RB_OBJ_WRITE’
     295 |             RB_OBJ_WRITE(me, &def->body.alias.original_me, (rb_method_entry_t *)opts);
         |             ^~~~~~~~~~~~
   In file included from vm.c:304:
   vm_eval.c: In function ‘vm_call0_cfunc_with_frame’:
   vm_eval.c:66:38: warning: taking address of packed member of ‘struct rb_method_definition_struct’ may result in an unaligned pointer value [-Waddress-of-packed-member]
      66 |     const rb_method_cfunc_t *cfunc = &me->def->body.cfunc;
         |                                      ^~~~~~~~~~~~~~~~~~~~
   vm_eval.c: In function ‘rb_eval_string_protect’:
   vm_eval.c:1472:23: warning: cast between incompatible function types from ‘VALUE (*)(const char *)’ {aka ‘long unsigned int (*)(const char *)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
    1472 |     return rb_protect((VALUE (*)(VALUE))rb_eval_string, (VALUE)str, pstate);
         |                       ^
   vm.c: In function ‘vm_exec’:
   vm.c:1832:37: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1832 |                             entry = &ct->entries[i];
         |                                     ^~~~~~~~~~~~~~~
   vm.c:1869:25: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1869 |                 entry = &ct->entries[i];
         |                         ^~~~~~~~~~~~~~~
   vm.c:1885:25: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1885 |                 entry = &ct->entries[i];
         |                         ^~~~~~~~~~~~~~~
   vm.c:1912:25: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1912 |                 entry = &ct->entries[i];
         |                         ^~~~~~~~~~~~~~~
   vm.c:1950:25: warning: taking address of packed member of ‘struct iseq_catch_table’ may result in an unaligned pointer value [-Waddress-of-packed-member]
    1950 |                 entry = &ct->entries[i];
         |                         ^~~~~~~~~~~~~~~
   vm.c: In function ‘check_machine_stack_size’:
   vm.c:2245:14: warning: comparison of integer expressions of different signedness: ‘size_t’ {aka ‘long unsigned int’} and ‘long int’ [-Wsign-compare]
    2245 |     if (size < PTHREAD_STACK_MIN) {
         |              ^
   vm.c: In function ‘rb_execution_context_mark’:
   vm.c:2366:55: warning: expression does not compute the number of elements in this array; element type is ‘const struct __jmp_buf_tag’, not ‘VALUE’ {aka ‘long unsigned int’} [-Wsizeof-array-div]
    2366 |                              sizeof(ec->machine.regs) / sizeof(VALUE));
         |                                                       ^
   vm.c:2366:55: note: add parentheses around the second ‘sizeof’ to silence this warning
   vm.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling vm_backtrace.c
   compiling vm_dump.c
   compiling vm_trace.c
   vm_trace.c: In function ‘exec_hooks_body’:
   vm_trace.c:268:20: warning: cast between incompatible function types from ‘rb_event_hook_func_t’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} to ‘void (*)(VALUE,  const rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  const struct rb_trace_arg_struct *)’} [-Wcast-function-type]
     268 |                 (*((rb_event_hook_raw_arg_func_t)hook->func))(hook->data, trace_arg);
         |                    ^
   vm_trace.c: In function ‘rb_tracepoint_enable’:
   vm_trace.c:1040:56: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    1040 |         rb_thread_add_event_hook2(tp->target_th->self, (rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
         |                                                        ^
   vm_trace.c:1044:28: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    1044 |         rb_add_event_hook2((rb_event_hook_func_t)tp_call_trace, tp->events, tpval,
         |                            ^
   vm_trace.c: In function ‘rb_tracepoint_disable’:
   vm_trace.c:1059:68: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    1059 |         rb_thread_remove_event_hook_with_data(tp->target_th->self, (rb_event_hook_func_t)tp_call_trace, tpval);
         |                                                                    ^
   vm_trace.c:1062:40: warning: cast between incompatible function types from ‘void (*)(VALUE,  rb_trace_arg_t *)’ {aka ‘void (*)(long unsigned int,  struct rb_trace_arg_struct *)’} to ‘void (*)(rb_event_flag_t,  VALUE,  VALUE,  ID,  VALUE)’ {aka ‘void (*)(unsigned int,  long unsigned int,  long unsigned int,  long unsigned int,  long unsigned int)’} [-Wcast-function-type]
    1062 |         rb_remove_event_hook_with_data((rb_event_hook_func_t)tp_call_trace, tpval);
         |                                        ^
   vm_trace.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   processing probes in object files
   compiling enc/ascii.c
   compiling enc/us_ascii.c
   compiling enc/unicode.c
   enc/unicode.c: In function ‘onigenc_unicode_get_case_fold_codes_by_str’:
   enc/unicode.c:557:28: warning: ‘ncs’ may be used uninitialized [-Wmaybe-uninitialized]
     557 |         for (i = 0; i < ncs[0]; i++) {
         |                         ~~~^~~
   enc/unicode.c:519:15: note: ‘ncs’ declared here
     519 |       int fn, ncs[3];
         |               ^~~
   enc/unicode.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling enc/utf_8.c
   compiling enc/trans/newline.c
   compiling ./missing/setproctitle.c
   compiling ./missing/strlcat.c
   compiling ./missing/strlcpy.c
   compiling addr2line.c
   compiling dmyenc.c
   linking miniruby
   ./revision.h unchanged
   generating encdb.h
   encdb.h updated
   ./tool/ifchange "--timestamp=.rbconfig.time" rbconfig.rb rbconfig.tmp
   rbconfig.rb updated
   generating enc.mk
   making srcs under enc
   make[1]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8'
   make[1]: Nothing to be done for 'srcs'.
   make[1]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8'
   generating transdb.h
   transdb.h updated
   compiling dln.c
   compiling localeinit.c
   creating verconf.h
   verconf.h updated
   compiling loadpath.c
   compiling prelude.c
   linking static-library libruby-static.a
   linking shared-library libruby.so.2.5.8
   generating makefiles ext/configure-ext.mk
   ext/configure-ext.mk updated
   make[1]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8'
   configuring -test-/array/resize
   configuring -test-/bignum
   configuring -test-/bug-3571
   configuring -test-/bug-5832
   configuring -test-/bug_reporter
   configuring -test-/class
   configuring -test-/debug
   configuring -test-/dln/empty
   configuring -test-/exception
   configuring -test-/fatal
   configuring -test-/file
   configuring -test-/float
   configuring -test-/funcall
   configuring -test-/gvl/call_without_gvl
   configuring -test-/hash
   configuring -test-/integer
   configuring -test-/iseq_load
   configuring -test-/iter
   configuring -test-/load/dot.dot
   configuring -test-/load/protect
   configuring -test-/marshal/compat
   configuring -test-/marshal/internal_ivar
   configuring -test-/marshal/usr
   configuring -test-/memory_status
   configuring -test-/method
   configuring -test-/notimplement
   configuring -test-/num2int
   configuring -test-/path_to_class
   configuring -test-/popen_deadlock
   configuring -test-/postponed_job
   configuring -test-/printf
   configuring -test-/proc
   configuring -test-/rational
   configuring -test-/recursion
   configuring -test-/regexp
   configuring -test-/scan_args
   configuring -test-/st/foreach
   configuring -test-/st/numhash
   configuring -test-/st/update
   configuring -test-/string
   configuring -test-/struct
   configuring -test-/symbol
   configuring -test-/thread_fd_close
   configuring -test-/time
   configuring -test-/tracepoint
   configuring -test-/typeddata
   configuring -test-/vm
   configuring -test-/wait_for_single_fd
   configuring bigdecimal
   configuring cgi/escape
   configuring continuation
   configuring coverage
   configuring date
   configuring dbm
   configuring digest
   configuring digest/bubblebabble
   configuring digest/md5
   configuring digest/rmd160
   configuring digest/sha1
   configuring digest/sha2
   configuring etc
   configuring fcntl
   configuring fiber
   configuring fiddle
   configuring gdbm
   configuring io/console
   configuring io/nonblock
   configuring io/wait
   configuring json
   configuring json/generator
   configuring json/parser
   configuring nkf
   configuring objspace
   configuring openssl
   configuring pathname
   configuring psych
   configuring pty
   configuring racc/cparse
   configuring rbconfig/sizeof
   configuring readline
   configuring ripper
   configuring rubyvm
   configuring sdbm
   configuring socket
   configuring stringio
   configuring strscan
   configuring syslog
   configuring zlib
   make[1]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8'
   generating makefile exts.mk
   exts.mk updated
   make[1]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/array/resize'
   compiling resize.c
   linking shared-object -test-/array/resize.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/array/resize'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bignum'
   compiling big2str.c
   compiling bigzero.c
   compiling div.c
   compiling init.c
   compiling intpack.c
   compiling mul.c
   compiling str2big.c
   linking shared-object -test-/bignum.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bignum'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bug-3571'
   compiling bug.c
   linking shared-object -test-/bug_3571.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bug-3571'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bug-5832'
   compiling bug.c
   linking shared-object -test-/bug_5832.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bug-5832'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bug_reporter'
   compiling bug_reporter.c
   linking shared-object -test-/bug_reporter.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/bug_reporter'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/class'
   compiling class2name.c
   compiling init.c
   linking shared-object -test-/class.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/class'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/debug'
   compiling init.c
   compiling inspector.c
   compiling profile_frames.c
   linking shared-object -test-/debug.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/debug'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/dln/empty'
   compiling empty.c
   linking shared-object -test-/dln/empty.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/dln/empty'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/exception'
   compiling dataerror.c
   compiling enc_raise.c
   compiling ensured.c
   compiling init.c
   linking shared-object -test-/exception.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/exception'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/fatal'
   compiling rb_fatal.c
   linking shared-object -test-/fatal/rb_fatal.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/fatal'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/file'
   compiling fs.c
   compiling init.c
   compiling stat.c
   linking shared-object -test-/file.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/file'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/float'
   compiling init.c
   compiling nextafter.c
   linking shared-object -test-/float.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/float'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/funcall'
   compiling funcall.c
   linking shared-object -test-/funcall.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/funcall'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/gvl/call_without_gvl'
   compiling call_without_gvl.c
   linking shared-object -test-/gvl/call_without_gvl.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/gvl/call_without_gvl'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/hash'
   compiling delete.c
   compiling init.c
   linking shared-object -test-/hash.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/hash'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/integer'
   compiling core_ext.c
   compiling init.c
   compiling my_integer.c
   linking shared-object -test-/integer.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/integer'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/iseq_load'
   compiling iseq_load.c
   linking shared-object -test-/iseq_load.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/iseq_load'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/iter'
   compiling break.c
   compiling init.c
   compiling yield.c
   linking shared-object -test-/iter.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/iter'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/load/dot.dot'
   compiling dot.dot.c
   linking shared-object -test-/load/dot.dot.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/load/dot.dot'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/load/protect'
   compiling protect.c
   linking shared-object -test-/load/protect.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/load/protect'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/marshal/compat'
   compiling usrcompat.c
   linking shared-object -test-/marshal/compat.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/marshal/compat'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/marshal/internal_ivar'
   compiling internal_ivar.c
   linking shared-object -test-/marshal/internal_ivar.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/marshal/internal_ivar'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/marshal/usr'
   compiling usrmarshal.c
   linking shared-object -test-/marshal/usr.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/marshal/usr'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/method'
   compiling arity.c
   compiling init.c
   linking shared-object -test-/method.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/method'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/notimplement'
   compiling bug.c
   linking shared-object -test-/notimplement.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/notimplement'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/num2int'
   compiling num2int.c
   linking shared-object -test-/num2int.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/num2int'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/path_to_class'
   compiling path_to_class.c
   linking shared-object -test-/path_to_class.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/path_to_class'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/popen_deadlock'
   compiling infinite_loop_dlsym.c
   linking shared-object -test-/popen_deadlock/infinite_loop_dlsym.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/popen_deadlock'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/postponed_job'
   compiling postponed_job.c
   linking shared-object -test-/postponed_job.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/postponed_job'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/printf'
   compiling printf.c
   linking shared-object -test-/printf.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/printf'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/proc'
   compiling init.c
   compiling receiver.c
   compiling super.c
   linking shared-object -test-/proc.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/proc'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/rational'
   compiling rat.c
   linking shared-object -test-/rational.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/rational'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/recursion'
   compiling recursion.c
   linking shared-object -test-/recursion.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/recursion'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/regexp'
   compiling init.c
   compiling parse_depth_limit.c
   linking shared-object -test-/regexp.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/regexp'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/scan_args'
   compiling scan_args.c
   linking shared-object -test-/scan_args.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/scan_args'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/st/foreach'
   compiling foreach.c
   linking shared-object -test-/st/foreach.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/st/foreach'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/st/numhash'
   compiling numhash.c
   linking shared-object -test-/st/numhash.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/st/numhash'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/st/update'
   compiling update.c
   linking shared-object -test-/st/update.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/st/update'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/string'
   compiling capacity.c
   compiling coderange.c
   compiling cstr.c
   compiling ellipsize.c
   compiling enc_associate.c
   compiling enc_str_buf_cat.c
   compiling fstring.c
   compiling init.c
   compiling modify.c
   compiling new.c
   compiling nofree.c
   compiling normalize.c
   compiling qsort.c
   compiling rb_str_dup.c
   compiling set_len.c
   linking shared-object -test-/string.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/string'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/struct'
   compiling duplicate.c
   compiling init.c
   compiling len.c
   compiling member.c
   linking shared-object -test-/struct.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/struct'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/symbol'
   compiling init.c
   compiling type.c
   linking shared-object -test-/symbol.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/symbol'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/thread_fd_close'
   compiling thread_fd_close.c
   linking shared-object -test-/thread_fd_close.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/thread_fd_close'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/time'
   compiling init.c
   compiling new.c
   linking shared-object -test-/time.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/time'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/tracepoint'
   compiling gc_hook.c
   compiling tracepoint.c
   linking shared-object -test-/tracepoint.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/tracepoint'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/typeddata'
   compiling typeddata.c
   linking shared-object -test-/typeddata.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/typeddata'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/vm'
   compiling at_exit.c
   linking shared-object -test-/vm/at_exit.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/vm'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/wait_for_single_fd'
   compiling wait_for_single_fd.c
   linking shared-object -test-/wait_for_single_fd.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/-test-/wait_for_single_fd'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/bigdecimal'
   compiling bigdecimal.c
   linking shared-object bigdecimal.so
   installing default bigdecimal libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/bigdecimal'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/cgi/escape'
   compiling escape.c
   linking shared-object cgi/escape.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/cgi/escape'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/continuation'
   compiling continuation.c
   linking shared-object continuation.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/continuation'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/coverage'
   compiling coverage.c
   linking shared-object coverage.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/coverage'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/date'
   compiling date_core.c
   compiling date_parse.c
   compiling date_strftime.c
   compiling date_strptime.c
   linking shared-object date_core.so
   installing default date_core libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/date'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest'
   compiling digest.c
   linking shared-object digest.so
   installing digest libraries
   installing default digest libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/bubblebabble'
   compiling bubblebabble.c
   linking shared-object digest/bubblebabble.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/bubblebabble'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/md5'
   compiling md5init.c
   compiling md5.c
   linking shared-object digest/md5.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/md5'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/rmd160'
   compiling rmd160init.c
   compiling rmd160.c
   linking shared-object digest/rmd160.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/rmd160'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/sha1'
   compiling sha1init.c
   compiling sha1.c
   linking shared-object digest/sha1.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/sha1'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/sha2'
   compiling sha2init.c
   compiling sha2.c
   In file included from sha2.c:40:
   sha2.c:578:28: warning: argument 2 of type ‘sha2_byte[]’ {aka ‘unsigned char[]’} with mismatched bound [-Warray-parameter=]
     578 | int SHA256_Final(sha2_byte digest[], SHA256_CTX* context) {
         |                  ~~~~~~~~~~^~~~~~~~
   sha2.h:145:50: note: in definition of macro ‘SHA256_Final’
     145 | #define SHA256_Final(d, c)      SHA256_Finish(c, d)
         |                                                  ^
   sha2.h:170:18: note: previously declared as ‘uint8_t[32]’ {aka ‘unsigned char[32]’}
     170 | int SHA256_Final(uint8_t[SHA256_DIGEST_LENGTH], SHA256_CTX*);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   sha2.h:145:50: note: in definition of macro ‘SHA256_Final’
     145 | #define SHA256_Final(d, c)      SHA256_Finish(c, d)
         |                                                  ^
   sha2.c:643:44: warning: argument 2 of type ‘char[]’ with mismatched bound [-Warray-parameter=]
     643 | char *SHA256_End(SHA256_CTX* context, char buffer[]) {
         |                                       ~~~~~^~~~~~~~
   In file included from sha2.c:40:
   sha2.h:171:31: note: previously declared as ‘char[65]’
     171 | char* SHA256_End(SHA256_CTX*, char[SHA256_DIGEST_STRING_LENGTH]);
         |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   sha2.c:946:28: warning: argument 2 of type ‘sha2_byte[]’ {aka ‘unsigned char[]’} with mismatched bound [-Warray-parameter=]
     946 | int SHA512_Final(sha2_byte digest[], SHA512_CTX* context) {
         |                  ~~~~~~~~~~^~~~~~~~
   sha2.h:163:50: note: in definition of macro ‘SHA512_Final’
     163 | #define SHA512_Final(d, c)      SHA512_Finish(c, d)
         |                                                  ^
   sha2.h:182:18: note: previously declared as ‘uint8_t[64]’ {aka ‘unsigned char[64]’}
     182 | int SHA512_Final(uint8_t[SHA512_DIGEST_LENGTH], SHA512_CTX*);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   sha2.h:163:50: note: in definition of macro ‘SHA512_Final’
     163 | #define SHA512_Final(d, c)      SHA512_Finish(c, d)
         |                                                  ^
   sha2.c:976:44: warning: argument 2 of type ‘char[]’ with mismatched bound [-Warray-parameter=]
     976 | char *SHA512_End(SHA512_CTX* context, char buffer[]) {
         |                                       ~~~~~^~~~~~~~
   In file included from sha2.c:40:
   sha2.h:183:31: note: previously declared as ‘char[129]’
     183 | char* SHA512_End(SHA512_CTX*, char[SHA512_DIGEST_STRING_LENGTH]);
         |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   sha2.c:1022:28: warning: argument 2 of type ‘sha2_byte[]’ {aka ‘unsigned char[]’} with mismatched bound [-Warray-parameter=]
    1022 | int SHA384_Final(sha2_byte digest[], SHA384_CTX* context) {
         |                  ~~~~~~~~~~^~~~~~~~
   sha2.h:154:50: note: in definition of macro ‘SHA384_Final’
     154 | #define SHA384_Final(d, c)      SHA384_Finish(c, d)
         |                                                  ^
   sha2.h:176:18: note: previously declared as ‘uint8_t[48]’ {aka ‘unsigned char[48]’}
     176 | int SHA384_Final(uint8_t[SHA384_DIGEST_LENGTH], SHA384_CTX*);
         |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   sha2.h:154:50: note: in definition of macro ‘SHA384_Final’
     154 | #define SHA384_Final(d, c)      SHA384_Finish(c, d)
         |                                                  ^
   sha2.c:1052:44: warning: argument 2 of type ‘char[]’ with mismatched bound [-Warray-parameter=]
    1052 | char *SHA384_End(SHA384_CTX* context, char buffer[]) {
         |                                       ~~~~~^~~~~~~~
   In file included from sha2.c:40:
   sha2.h:177:31: note: previously declared as ‘char[97]’
     177 | char* SHA384_End(SHA384_CTX*, char[SHA384_DIGEST_STRING_LENGTH]);
         |                               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   linking shared-object digest/sha2.so
   installing default sha2 libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/digest/sha2'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/etc'
   generating constant definitions
   compiling etc.c
   linking shared-object etc.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/etc'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/fcntl'
   compiling fcntl.c
   linking shared-object fcntl.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/fcntl'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/fiber'
   compiling fiber.c
   linking shared-object fiber.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/fiber'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/fiddle'
   compiling closure.c
   closure.c: In function ‘initialize’:
   closure.c:264:5: warning: ‘ffi_prep_closure’ is deprecated: use ffi_prep_closure_loc instead [-Wdeprecated-declarations]
     264 |     result = ffi_prep_closure(pcl, cif, callback, (void *)self);
         |     ^~~~~~
   In file included from /usr/include/ffi.h:18,
                    from ./fiddle.h:42,
                    from closure.c:1:
   /usr/include/ffi-x86_64.h:375:1: note: declared here
     375 | ffi_prep_closure (ffi_closure*,
         | ^~~~~~~~~~~~~~~~
   closure.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   compiling conversions.c
   compiling fiddle.c
   compiling function.c
   compiling handle.c
   compiling pointer.c
   linking shared-object fiddle.so
   installing default fiddle libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/fiddle'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/io/console'
   compiling console.c
   linking shared-object io/console.so
   installing default console libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/io/console'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/io/nonblock'
   compiling nonblock.c
   linking shared-object io/nonblock.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/io/nonblock'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/io/wait'
   compiling wait.c
   linking shared-object io/wait.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/io/wait'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/json'
   installing default libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/json'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/json/generator'
   compiling generator.c
   In file included from generator.c:1:
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 20 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 21 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 22 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 23 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 24 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 25 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 26 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 27 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 28 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 29 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json_integer’ at generator.c:849:9,
       inlined from ‘mInteger_to_json’ at generator.c:360:5:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘mInteger_to_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 30 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 20 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 21 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 22 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 23 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 24 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 25 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 26 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 27 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 28 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 29 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   In function ‘freverse’,
       inlined from ‘fltoa’ at ../fbuffer/fbuffer.h:158:5,
       inlined from ‘fbuffer_append_long’ at ../fbuffer/fbuffer.h:165:25,
       inlined from ‘generate_json_fixnum’ at generator.c:836:5,
       inlined from ‘generate_json’ at generator.c:888:9:
   ../fbuffer/fbuffer.h:145:45: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
     145 |         c = *end, *end-- = *start, *start++ = c;
         |                                    ~~~~~~~~~^~~
   generator.c: In function ‘generate_json’:
   ../fbuffer/fbuffer.h:164:10: note: at offset 30 into destination object ‘buf’ of size 20
     164 |     char buf[20];
         |          ^~~
   generator.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   linking shared-object json/ext/generator.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/json/generator'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/json/parser'
   compiling parser.c
   linking shared-object json/ext/parser.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/json/parser'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/nkf'
   compiling nkf.c
   linking shared-object nkf.so
   installing default nkf libraries
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/nkf'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/objspace'
   compiling object_tracing.c
   compiling objspace.c
   compiling objspace_dump.c
   linking shared-object objspace.so
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/objspace'
   make[2]: Entering directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/openssl'
   compiling openssl_missing.c
   compiling ossl.c
   ossl.c: In function ‘ossl_protect_x509_ary2sk’:
   ossl.c:47:13: warning: cast between incompatible function types from ‘struct stack_st_X509 * (*)(VALUE)’ {aka ‘struct stack_st_X509 * (*)(long unsigned int)’} to ‘VALUE (*)(VALUE)’ {aka ‘long unsigned int (*)(long unsigned int)’} [-Wcast-function-type]
      47 |             (VALUE (*)(VALUE))ossl_##name##_ary2sk0,            \
         |             ^
   ossl.c:63:1: note: in expansion of macro ‘OSSL_IMPL_ARY2SK’
      63 | OSSL_IMPL_ARY2SK(x509, X509, cX509Cert, DupX509CertPtr)
         | ^~~~~~~~~~~~~~~~
   ossl.c: In function ‘ossl_clear_error’:
   ossl.c:311:9: error: ‘ERR_get_error_line_data’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
     311 |         while ((e = ERR_get_error_line_data(&file, &line, &data, &flags))) {
         |         ^~~~~
   In file included from ossl.h:21,
                    from ossl.c:10:
   /usr/include/openssl/err.h:425:15: note: declared here
     425 | unsigned long ERR_get_error_line_data(const char **file, int *line,
         |               ^~~~~~~~~~~~~~~~~~~~~~~
   ossl.c: At top level:
   cc1: note: unrecognized command-line option ‘-Wno-self-assign’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-constant-logical-operand’ may have been intended to silence earlier diagnostics
   cc1: note: unrecognized command-line option ‘-Wno-parentheses-equality’ may have been intended to silence earlier diagnostics
   cc1: some warnings being treated as errors
   make[2]: *** [Makefile:311: ossl.o] Error 1
   make[2]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8/ext/openssl'
   make[1]: *** [exts.mk:236: ext/openssl/all] Error 2
   make[1]: Leaving directory '/home/ec2-user/.rvm/src/ruby-2.5.8'
   make: *** [uncommon.mk:240: build-ext] Error 2
   ++ return 2