[ruby-core:121707] [Ruby Bug#21276] Regression segfault instead of exception `require': cannot load such file

22 Apr 2025

      Issue #21276 has been updated by hsbt (Hiroshi SHIBATA).

Status changed from Open to Closed

Thanks for your confirmation.

Unfortunately, Ruby 3.2 is already security maintenance status. It means I will not backport commit for bugfix. I recommend to use Ruby 3.3 or 3.4.

----------------------------------------
Bug #21276: Regression segfault instead of exception `require': cannot load such file 
https://bugs.ruby-lang.org/issues/21276#change-112760

* Author: wsfulton (William Fulton)
* Status: Closed
* Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN
----------------------------------------
A segfault occurs instead of a Ruby exception in one of the test cases we have in SWIG. I've run a git bisect on the 3.2 releases to identify commit 2aaa9af75989bb0993a44e9690ed2ca890b2ff91 for when the segfault begins:

```
commit 2aaa9af75989bb0993a44e9690ed2ca890b2ff91
Author: nagachika <nagachika@ruby-lang.org>
Date:   Thu Nov 9 17:36:42 2023 +0900

    merge revision(s) 4329554f171fdb483cafa672df5f2a08741940c5,b5c74d548872388921402ff2db36be15e924a89b: [Backport #19985]

            [Bug #19985] Raise LoadError with the converted feature name

            `Kernel#require` converts feature name objects that have the `to_path`
            method such as `Pathname`, but had used the original object on error
            and had resulted in an unexpected `TypeError`.
            ---
             load.c                    | 14 +++++++++++---
             test/ruby/test_require.rb | 26 +++++++++++++++++++++-----
             2 files changed, 32 insertions(+), 8 deletions(-)

            Ease the `Encoding::CompatibilityError` test failure

            At the time this test first started using `assert_raise_with_message`,
            it did not touch `Encoding.default_internal`.
            ---
             test/ruby/test_require.rb | 3 ++-
             1 file changed, 2 insertions(+), 1 deletion(-)
```

So, ruby-3.2.2 is okay and 3.2.3 has the regression. Still present with ruby-3.2.8.

I'll provide two ways to replicate.
1. Using SWIG built from source:
1a. clone SWIG from github and build SWIG using steps 1. and 2. from https://swig.org/svn.html. Note that you can specify a custom build of ruby to use with: ./configure --with-ruby=/my-path-to-ruby-installation/bin/ruby
1b. cd Examples/test-suite/ruby
1c. make import_fragments.cpptest CXXFLAGS=-g

This is my output using ruby version 3.2.3 (ruby git tag v3_2_3):

```
~/swig/github/wsfulton/swig/Examples/test-suite/ruby (master >)$ make import_fragments.cpptest CXXFLAGS=-g 
if [ -f ./import_fragments_runme.rb ]; then echo "checking ruby testcase import_fragments (with run test)" ; else echo "checking ruby testcase import_fragments" ; fi
checking ruby testcase import_fragments (with run test)
make -f ../../../Examples/Makefile SRCDIR='./' CXXSRCS='' SWIG_LIB_DIR='../../../Lib' SWIGEXE='../../../swig' INCLUDES='-I../../../Examples/test-suite' SWIGOPT='-outcurrentdir -I../../../Examples/test-suite -w801 -noautorename -features autodoc=4 -Werror' NOLINK=true TARGET='import_fragments' INTERFACEDIR='../' INTERFACE='import_fragments.i' ruby_cpp
make[1]: Entering directory '/home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby'
env SWIG_LIB=../../../Lib  ../../../swig -c++ -ruby -outcurrentdir -I../../../Examples/test-suite -w801 -noautorename -features autodoc=4 -Werror -o import_fragments_wrap.cxx ./../import_fragments.i
g++ -c -fPIC -I. -I./  -g -fPIC  import_fragments_wrap.cxx   -I../../../Examples/test-suite -I/home/william/install/ruby-3_2_3-debug/include/ruby-3.2.0 -I/home/william/install/ruby-3_2_3-debug/include/ruby-3.2.0/x86_64-linux
g++ -shared  -g    import_fragments_wrap.o    -o import_fragments.so
make[1]: Leaving directory '/home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby'
if [ -f ./import_fragments_runme.rb ]; then env LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH  /home/william/install/ruby-3_2_3-debug/bin/ruby  -I.:. ./import_fragments_runme.rb; elif [ -f ./import_fragments.so ] ; then env LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH  /home/william/install/ruby-3_2_3-debug/bin/ruby  -I.:. -r./import_fragments.so -e '' ; fi
<internal:/home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:151: [BUG] Segmentation fault at 0x000000000000000a
ruby 3.2.3 (2024-01-18 revision 52bb2ac0a6) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0004 p:0018 s:0029 e:000026 RESCUE <internal:/home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:151
c:0003 p:0275 s:0023 e:000022 METHOD <internal:/home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:40
c:0002 p:0014 s:0008 E:002010 EVAL   ./import_fragments_runme.rb:15 [FINISH]
c:0001 p:0000 s:0003 E:000bf0 DUMMY  [FINISH]

-- Ruby level backtrace information ----------------------------------------
./import_fragments_runme.rb:15:in `<main>'
<internal:/home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:40:in `require'
<internal:/home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:151:in `rescue in require'

-- Machine register context ------------------------------------------------
 RIP: 0x000057fa8949081d RBP: 0x00007ffdd0182518 RSP: 0x00007ffdd0182518
 RAX: 0x000000000000000a RBX: 0x000057fa94261250 RCX: 0x000000000000008c
 RDX: 0x000000000000008c RDI: 0x000000000000000a RSI: 0x000000000000008c
  R8: 0x0000000000000845  R9: 0x0000000000000020 R10: 0x000057fa94071fc0
 R11: 0x0000000000000040 R12: 0x0000000000000003 R13: 0x0000000000000000
 R14: 0x000057fa94261260 R15: 0x00007b246ad86f10 EFL: 0x0000000000010283

-- C level backtrace information -------------------------------------------
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_print_backtrace+0x20) [0x57fa8950f75c] ../vm_dump.c:785
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_vm_bugreport+0x198) [0x57fa8950fd07] ../vm_dump.c:1080
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_bug_for_fatal_signal+0x12c) [0x57fa895b3000]
/home/william/install/ruby-3_2_3-debug/bin/ruby(sigsegv+0x74) [0x57fa8945b1be] ../signal.c:964
/home/william/install/ruby-3_2_3-debug/bin/ruby(sigill) (null):0
/lib/x86_64-linux-gnu/libc.so.6(0x7b246aa45330) [0x7b246aa45330]
/home/william/install/ruby-3_2_3-debug/bin/ruby(hash_table_index+0x13) [0x57fa8949081d] ../id_table.c:132
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_id_table_lookup+0x38) [0x57fa89490bb5] ../id_table.c:230
/home/william/install/ruby-3_2_3-debug/bin/ruby(vm_search_cc+0x6e) [0x57fa894db233] ../vm_insnhelper.c:1988
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_vm_search_method_slowpath+0x51) [0x57fa894db4b3] ../vm_insnhelper.c:2084
/home/william/install/ruby-3_2_3-debug/bin/ruby(vm_search_method_slowpath0+0x2e) [0x57fa894db51a] ../vm_insnhelper.c:2106
/home/william/install/ruby-3_2_3-debug/bin/ruby(vm_search_method_fastpath+0x66) [0x57fa894db614] ../vm_insnhelper.c:2172
/home/william/install/ruby-3_2_3-debug/bin/ruby(vm_search_method) ../vm_insnhelper.c:2182
/home/william/install/ruby-3_2_3-debug/bin/ruby(vm_method_cfunc_is+0x2f) [0x57fa894db693] ../vm_insnhelper.c:2237
/home/william/install/ruby-3_2_3-debug/bin/ruby(opt_equality+0x6a) [0x57fa894db990] ../vm_insnhelper.c:2324
/home/william/install/ruby-3_2_3-debug/bin/ruby(vm_exec_core+0x5983) [0x57fa894efa06] ../insns.def:1174
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_vm_exec+0x1a8) [0x57fa8950499c] ../vm.c:2383
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_iseq_eval_main+0x42) [0x57fa89505731] ../vm.c:2633
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_ec_exec_node+0x125) [0x57fa892deeb9] ../eval.c:289
/home/william/install/ruby-3_2_3-debug/bin/ruby(ruby_run_node+0x96) [0x57fa892df026] ../eval.c:330
/home/william/install/ruby-3_2_3-debug/bin/ruby(rb_main+0x4c) [0x57fa892da455] ../main.c:38
/home/william/install/ruby-3_2_3-debug/bin/ruby(main+0x62) [0x57fa892da4cd] ../main.c:57

-- Other runtime information -----------------------------------------------

* Loaded script: ./import_fragments_runme.rb

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 fiber.so
    3 rational.so
    4 complex.so
    5 ruby2_keywords.rb
    6 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/encdb.so
    7 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/trans/transdb.so
    8 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/rbconfig.rb
    9 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/compatibility.rb
   10 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/defaults.rb
   11 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/deprecate.rb
   12 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/errors.rb
   13 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/unknown_command_spell_checker.rb
   14 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/exceptions.rb
   15 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/basic_specification.rb
   16 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/stub_specification.rb
   17 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/platform.rb
   18 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/util/list.rb
   19 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/version.rb
   20 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/requirement.rb
   21 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/specification.rb
   22 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/util.rb
   23 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems/core_ext/kernel_gem.rb
   24 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/monitor.so
   25 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/monitor.rb
   26 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/rubygems.rb
   27 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/error_highlight/version.rb
   28 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/error_highlight/base.rb
   29 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/error_highlight/formatter.rb
   30 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/error_highlight/core_ext.rb
   31 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/error_highlight.rb
   32 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/version.rb
   33 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/core_ext/name_error.rb
   34 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/levenshtein.rb
   35 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/jaro_winkler.rb
   36 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checker.rb
   37 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb
   38 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
   39 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/name_error_checkers.rb
   40 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/method_name_checker.rb
   41 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/key_error_checker.rb
   42 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/null_checker.rb
   43 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/tree_spell_checker.rb
   44 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/require_path_checker.rb
   45 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/spell_checkers/pattern_key_name_checker.rb
   46 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean/formatter.rb
   47 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/did_you_mean.rb
   48 /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/syntax_suggest/core_ext.rb
   49 /home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby/swig_assert.rb

* Process memory map:

57fa892aa000-57fa892d9000 r--p 00000000 103:06 30818930                  /home/william/install/ruby-3_2_3-debug/bin/ruby
57fa892d9000-57fa895c5000 r-xp 0002f000 103:06 30818930                  /home/william/install/ruby-3_2_3-debug/bin/ruby
57fa895c5000-57fa8974e000 r--p 0031b000 103:06 30818930                  /home/william/install/ruby-3_2_3-debug/bin/ruby
57fa8974e000-57fa89757000 r--p 004a4000 103:06 30818930                  /home/william/install/ruby-3_2_3-debug/bin/ruby
57fa89757000-57fa89758000 rw-p 004ad000 103:06 30818930                  /home/william/install/ruby-3_2_3-debug/bin/ruby
57fa89758000-57fa8976d000 rw-p 00000000 00:00 0 
57fa94047000-57fa9435c000 rw-p 00000000 00:00 0                          [heap]
7b2464200000-7b2464407000 r--s 00000000 103:04 407927                    /usr/lib/x86_64-linux-gnu/libc.so.6
7b2464600000-7b24650bb000 r--s 00000000 103:06 30818930                  /home/william/install/ruby-3_2_3-debug/bin/ruby
7b2465200000-7b246529d000 r--p 00000000 103:04 408519                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.33
7b246529d000-7b24653e5000 r-xp 0009d000 103:04 408519                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.33
7b24653e5000-7b246546c000 r--p 001e5000 103:04 408519                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.33
7b246546c000-7b2465477000 r--p 0026b000 103:04 408519                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.33
7b2465477000-7b246547a000 rw-p 00276000 103:04 408519                    /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.33
7b246547a000-7b246547e000 rw-p 00000000 00:00 0 
7b24655b7000-7b24655b8000 ---p 00000000 00:00 0 
7b24655b8000-7b2465659000 rw-p 00000000 00:00 0 
7b2465659000-7b246565a000 ---p 00000000 00:00 0 
7b246565a000-7b24656fb000 rw-p 00000000 00:00 0 
7b24656fb000-7b24656fc000 ---p 00000000 00:00 0 
7b24656fc000-7b246579d000 rw-p 00000000 00:00 0 
7b246579d000-7b246579e000 ---p 00000000 00:00 0 
7b246579e000-7b246583f000 rw-p 00000000 00:00 0 
7b246583f000-7b2465840000 ---p 00000000 00:00 0 
7b2465840000-7b24658e1000 rw-p 00000000 00:00 0 
7b24658e1000-7b24658e2000 ---p 00000000 00:00 0 
7b24658e2000-7b2465983000 rw-p 00000000 00:00 0 
7b2465983000-7b2465984000 ---p 00000000 00:00 0 
7b2465984000-7b2465a25000 rw-p 00000000 00:00 0 
7b2465a25000-7b2465a26000 ---p 00000000 00:00 0 
7b2465a26000-7b2465ac7000 rw-p 00000000 00:00 0 
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7b2465b6a000-7b2465c0b000 rw-p 00000000 00:00 0 
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7b2465c0c000-7b2465cad000 rw-p 00000000 00:00 0 
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7b2465cae000-7b2465d4f000 rw-p 00000000 00:00 0 
7b2465d4f000-7b2465d50000 ---p 00000000 00:00 0 
7b2465d50000-7b2465df1000 rw-p 00000000 00:00 0 
7b2465df1000-7b2465df2000 ---p 00000000 00:00 0 
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7b2465e93000-7b2465e94000 ---p 00000000 00:00 0 
7b2465e94000-7b2465f35000 rw-p 00000000 00:00 0 
7b2465f35000-7b2465f36000 ---p 00000000 00:00 0 
7b2465f36000-7b2465fd7000 rw-p 00000000 00:00 0 
7b2465fd7000-7b2465fd8000 ---p 00000000 00:00 0 
7b2465fd8000-7b2466079000 rw-p 00000000 00:00 0 
7b2466079000-7b246607a000 ---p 00000000 00:00 0 
7b246607a000-7b246611b000 rw-p 00000000 00:00 0 
7b246611b000-7b246611c000 ---p 00000000 00:00 0 
7b246611c000-7b24661bd000 rw-p 00000000 00:00 0 
7b24661bd000-7b24661be000 ---p 00000000 00:00 0 
7b24661be000-7b246625f000 rw-p 00000000 00:00 0 
7b246625f000-7b2466260000 ---p 00000000 00:00 0 
7b2466260000-7b2466301000 rw-p 00000000 00:00 0 
7b2466301000-7b2466302000 ---p 00000000 00:00 0 
7b2466302000-7b24663a3000 rw-p 00000000 00:00 0 
7b24663a3000-7b24663a4000 ---p 00000000 00:00 0 
7b24663a4000-7b2466445000 rw-p 00000000 00:00 0 
7b2466445000-7b2466446000 ---p 00000000 00:00 0 
7b2466446000-7b24664e7000 rw-p 00000000 00:00 0 
7b24664e7000-7b24664e8000 ---p 00000000 00:00 0 
7b24664e8000-7b2466589000 rw-p 00000000 00:00 0 
7b2466589000-7b246658a000 ---p 00000000 00:00 0 
7b246658a000-7b246662b000 rw-p 00000000 00:00 0 
7b246662b000-7b246662c000 ---p 00000000 00:00 0 
7b246662c000-7b24666cd000 rw-p 00000000 00:00 0 
7b24666cd000-7b24666ce000 ---p 00000000 00:00 0 
7b24666ce000-7b246676f000 rw-p 00000000 00:00 0 
7b246676f000-7b2466770000 ---p 00000000 00:00 0 
7b2466770000-7b2466811000 rw-p 00000000 00:00 0 
7b2466811000-7b2466812000 ---p 00000000 00:00 0 
7b2466812000-7b24668b3000 rw-p 00000000 00:00 0 
7b24668b3000-7b24668b4000 ---p 00000000 00:00 0 
7b24668b4000-7b2466955000 rw-p 00000000 00:00 0 
7b2466955000-7b2466956000 ---p 00000000 00:00 0 
7b2466956000-7b24669f7000 rw-p 00000000 00:00 0 
7b24669f7000-7b2469a00000 rw-p 00000000 00:00 0 
7b2469a12000-7b2469a16000 r--p 00000000 103:04 408078                    /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7b2469a16000-7b2469a3a000 r-xp 00004000 103:04 408078                    /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7b2469a3a000-7b2469a3e000 r--p 00028000 103:04 408078                    /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7b2469a3e000-7b2469a3f000 r--p 0002b000 103:04 408078                    /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7b2469a3f000-7b2469a40000 rw-p 0002c000 103:04 408078                    /usr/lib/x86_64-linux-gnu/libgcc_s.so.1
7b2469a40000-7b2469a70000 rw-p 00000000 00:00 0 
7b2469aa0000-7b2469b80000 rw-p 00000000 00:00 0 
7b2469b8f000-7b2469c00000 rw-p 00000000 00:00 0 
7b2469c00000-7b246a9ec000 r--p 00000000 103:04 398501                    /usr/lib/locale/locale-archive
7b246aa00000-7b246aa28000 r--p 00000000 103:04 407927                    /usr/lib/x86_64-linux-gnu/libc.so.6
7b246aa28000-7b246abb0000 r-xp 00028000 103:04 407927                    /usr/lib/x86_64-linux-gnu/libc.so.6
7b246abb0000-7b246abff000 r--p 001b0000 103:04 407927                    /usr/lib/x86_64-linux-gnu/libc.so.6
7b246abff000-7b246ac03000 r--p 001fe000 103:04 407927                    /usr/lib/x86_64-linux-gnu/libc.so.6
7b246ac03000-7b246ac05000 rw-p 00202000 103:04 407927                    /usr/lib/x86_64-linux-gnu/libc.so.6
7b246ac05000-7b246ac12000 rw-p 00000000 00:00 0 
7b246ac26000-7b246ac28000 r--p 00000000 103:06 5909120                   /home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby/import_fragments.so
7b246ac28000-7b246ac2c000 r-xp 00002000 103:06 5909120                   /home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby/import_fragments.so
7b246ac2c000-7b246ac2e000 r--p 00006000 103:06 5909120                   /home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby/import_fragments.so
7b246ac2e000-7b246ac2f000 r--p 00007000 103:06 5909120                   /home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby/import_fragments.so
7b246ac2f000-7b246ac30000 rw-p 00008000 103:06 5909120                   /home/william/swig/github/wsfulton/swig/Examples/test-suite/ruby/import_fragments.so
7b246ac30000-7b246ac80000 rw-p 00000000 00:00 0 
7b246ac87000-7b246ad8d000 rw-p 00000000 00:00 0 
7b246ad8d000-7b246ad9d000 r--p 00000000 103:04 408271                    /usr/lib/x86_64-linux-gnu/libm.so.6
7b246ad9d000-7b246ae1c000 r-xp 00010000 103:04 408271                    /usr/lib/x86_64-linux-gnu/libm.so.6
7b246ae1c000-7b246ae74000 r--p 0008f000 103:04 408271                    /usr/lib/x86_64-linux-gnu/libm.so.6
7b246ae74000-7b246ae75000 r--p 000e7000 103:04 408271                    /usr/lib/x86_64-linux-gnu/libm.so.6
7b246ae75000-7b246ae76000 rw-p 000e8000 103:04 408271                    /usr/lib/x86_64-linux-gnu/libm.so.6
7b246ae76000-7b246ae78000 r--p 00000000 103:04 407962                    /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7b246ae78000-7b246ae8d000 r-xp 00002000 103:04 407962                    /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7b246ae8d000-7b246aea6000 r--p 00017000 103:04 407962                    /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7b246aea6000-7b246aea7000 r--p 0002f000 103:04 407962                    /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7b246aea7000-7b246aea8000 rw-p 00030000 103:04 407962                    /usr/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
7b246aea8000-7b246aeb0000 rw-p 00000000 00:00 0 
7b246aeb0000-7b246aeba000 r--p 00000000 103:04 408107                    /usr/lib/x86_64-linux-gnu/libgmp.so.10.5.0
7b246aeba000-7b246af1d000 r-xp 0000a000 103:04 408107                    /usr/lib/x86_64-linux-gnu/libgmp.so.10.5.0
7b246af1d000-7b246af32000 r--p 0006d000 103:04 408107                    /usr/lib/x86_64-linux-gnu/libgmp.so.10.5.0
7b246af32000-7b246af33000 r--p 00081000 103:04 408107                    /usr/lib/x86_64-linux-gnu/libgmp.so.10.5.0
7b246af33000-7b246af34000 rw-p 00082000 103:04 408107                    /usr/lib/x86_64-linux-gnu/libgmp.so.10.5.0
7b246af34000-7b246af36000 r--p 00000000 103:04 408661                    /usr/lib/x86_64-linux-gnu/libz.so.1.3
7b246af36000-7b246af48000 r-xp 00002000 103:04 408661                    /usr/lib/x86_64-linux-gnu/libz.so.1.3
7b246af48000-7b246af4e000 r--p 00014000 103:04 408661                    /usr/lib/x86_64-linux-gnu/libz.so.1.3
7b246af4e000-7b246af4f000 r--p 0001a000 103:04 408661                    /usr/lib/x86_64-linux-gnu/libz.so.1.3
7b246af4f000-7b246af50000 rw-p 0001b000 103:04 408661                    /usr/lib/x86_64-linux-gnu/libz.so.1.3
7b246af56000-7b246af57000 r--p 00000000 103:06 30823100                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/monitor.so
7b246af57000-7b246af58000 r-xp 00001000 103:06 30823100                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/monitor.so
7b246af58000-7b246af59000 r--p 00002000 103:06 30823100                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/monitor.so
7b246af59000-7b246af5a000 r--p 00002000 103:06 30823100                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/monitor.so
7b246af5a000-7b246af5b000 rw-p 00003000 103:06 30823100                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/monitor.so
7b246af5b000-7b246af5c000 r--p 00000000 103:06 31620633                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/trans/transdb.so
7b246af5c000-7b246af5e000 r-xp 00001000 103:06 31620633                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/trans/transdb.so
7b246af5e000-7b246af5f000 r--p 00003000 103:06 31620633                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/trans/transdb.so
7b246af5f000-7b246af60000 r--p 00003000 103:06 31620633                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/trans/transdb.so
7b246af60000-7b246af61000 rw-p 00004000 103:06 31620633                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/trans/transdb.so
7b246af61000-7b246af62000 r--p 00000000 103:06 30818979                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/encdb.so
7b246af62000-7b246af64000 r-xp 00001000 103:06 30818979                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/encdb.so
7b246af64000-7b246af65000 r--p 00003000 103:06 30818979                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/encdb.so
7b246af65000-7b246af66000 r--p 00003000 103:06 30818979                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/encdb.so
7b246af66000-7b246af67000 rw-p 00004000 103:06 30818979                  /home/william/install/ruby-3_2_3-debug/lib/ruby/3.2.0/x86_64-linux/enc/encdb.so
7b246af67000-7b246af6e000 r--s 00000000 103:04 409682                    /usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
7b246af6e000-7b246af70000 rw-p 00000000 00:00 0 
7b246af70000-7b246af74000 r--p 00000000 00:00 0                          [vvar]
7b246af74000-7b246af76000 r-xp 00000000 00:00 0                          [vdso]
7b246af76000-7b246af77000 r--p 00000000 103:04 407739                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7b246af77000-7b246afa2000 r-xp 00001000 103:04 407739                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7b246afa2000-7b246afac000 r--p 0002c000 103:04 407739                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7b246afac000-7b246afae000 r--p 00036000 103:04 407739                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7b246afae000-7b246afb0000 rw-p 00038000 103:04 407739                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7ffdcf987000-7ffdd0186000 rw-p 00000000 00:00 0                          [stack]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0                  [vsyscall]

Aborted (core dumped)
make: *** [Makefile:82: import_fragments.cpptest] Error 134
```

2. Using attached tarball
2a. tar -xf ruby-crash.tar.bz2
2b. cd ruby-crash
2c. Adjust RUBY_ROOT in Makefile to your Ruby installation
2c. make

---Files--------------------------------
ruby-crash.tar.bz2 (21 KB)
ruby-crash-valgrind.txt (6.59 KB)

-- 
https://bugs.ruby-lang.org/