[ruby-core:118832] [Ruby master Bug#20666] Segmentation fault instead of LoadError exception

Issue #20666 has been updated by [e-mail] (Erez Geva).

File small_ruby_test_log.zip added

Did some minimising.

# Three sources:
## `extconf.rb`
> require 'mkmf'
> create_header
> create_makefile 'good'
## `good.cpp`
> #include <ruby.h>
> extern "C" void Init_good(void) {rb_require("bad");}
## `load.rb`
> begin
>   require 'good'
> rescue LoadError => e
>   print "#{e.to_s}\n"
> end

# Result on Linux
`$ ruby extconf.rb; make; ruby -I. load.rb; echo $?`
> creating extconf.h
> creating Makefile
> compiling good.cpp
> linking shared-object good.so
> cannot load such file -- bad
> 0

We catch the `LoadError` exception and exit gracefully.

# Result on Windows
Using the same Ruby 3.1.6 and Ruby 3.2.5 with GCC MinGW-W64 ucrt64
We run the same test in `small ruby test`.
We get `Segmentation fault`.
Attach is the log files of the `small ruby test`.

You can find the tests on github:
https://github.com/erezgeva/swig/actions/runs/10338780577

----------------------------------------
Bug #20666: Segmentation fault instead of LoadError exception
https://bugs.ruby-lang.org/issues/20666#change-109396

* Author: [e-mail] (Erez Geva)
* Status: Open
* ruby -v: ruby 3.2.5 (2024-07-26 revision 31d0f1a2e7) [x64-mingw-ucrt]
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
Using ruby -v
ruby 3.2.5 (2024-07-26 revision 31d0f1a2e7) [x64-mingw-ucrt]

>>From [GitHub windows 2022](https://github.com/actions/runner-images/blob/main/images/windows/Windows2022-Readme.md
)

We run the SWIG test:
[import_fragments](https://github.com/swig/swig/blob/master/Examples/test-suite/ruby/import_fragments_runme.rb)
The test try to load a broken library, which should rise a `LoadError`.


    begin
      require 'import_fragments'
    rescue LoadError => e
      # due to missing import_fragments_a
      exception_file = e.respond_to?(:path) ? e.path : e.to_s.sub(/.* -- /, '')
    end

Instead `LoadError` exception we get `Segmentation fault`:
 
    <internal:C:/hostedtoolcache/windows/Ruby/3.2.5/x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:151: [BUG] Segmentation fault
    ruby 3.2.5 (2024-07-26 revision 31d0f1a2e7) [x64-mingw-ucrt]
    
    -- Control frame information -----------------------------------------------
    c:0004 p:0018 s:0028 e:000025 RESCUE <internal:C:/hostedtoolcache/windows/Ruby/3.2.5/x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:151
    c:0003 p:0275 s:0022 e:000021 METHOD <internal:C:/hostedtoolcache/windows/Ruby/3.2.5/x64/lib/ruby/3.2.0/rubygems/core_ext/kernel_require.rb>:40
    c:0002 p:0011 s:0007 E:0004e8 EVAL   ./import_fragments_runme.rb:13 [FINISH]
    c:0001 p:0000 s:0003 E:0006e0 DUMMY  [FINISH]

    


---Files--------------------------------
source.zip (20.2 KB)
small_ruby_test_log.zip (6.09 KB)


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