Issue #20666 has been updated by ErezGeva2@gmail.com (Erez Geva). File source.zip added Include in source.zip are: 1. import_fragments_runme.rb 1. import_fragments_wrap.cxx 1. swig_assert.rb To build shared library using MinGW-w64 ucrt64: `g++ -c -std=c++20 import_fragments_wrap.cxx -I<Ruby dir> -I<Ruby arch dir>` `g++ -shared -std=c++20 import_fragments_wrap.o -L<Ruby lib dir> -l<Ruby lib> <RbConfig::CONFIG["LIBS"]> -o import_fragments.so` And running: `ruby -I. ./import_fragments_runme.rb` A long story short: import_fragments_runme.rb do `require 'import_fragments` The shared library in `Init_import_fragments(void)` call `rb_require("import_fragments_a")` And `import_fragments_a` does not exist! Note: Perhaps we are building wrongly, or we might need changes in our source code due to changes in Ruby 3.2.5. I never role that the problem comes from SWIG. But unlikely as all the reset of the SWIG tests with Ruby 3.2.5 on Windows pass! ---------------------------------------- Bug #20666: Segmentation fault instead of LoadError exception https://bugs.ruby-lang.org/issues/20666#change-109365 * Author: ErezGeva2@gmail.com (Erez Geva) * Status: Feedback * 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/Windows202... ) We run the SWIG test: [import_fragments](https://github.com/swig/swig/blob/master/Examples/test-suite/ruby/import_fra...) 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) -- https://bugs.ruby-lang.org/