Bug #21329: `date_core.so` is broken with the recent MSYS2 update

• Status: Open
• Assignee: -
• Target version: -
• Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN

[hsbt (Hiroshi SHIBATA)]

From https://github.com/ruby/psych/issues/730 and https://github.com/nobu/rdoc/actions/runs/14969443434/job/42046842539#step:5:35

Error: test_accept_blank_line(RDocMarkupToAnsiTest): LoadError: 127: The specified procedure could not be found.   - D:/a/rdoc/rdoc/vendor/bundle/ruby/3.3.0/gems/date-3.4.1/lib/date_core.so
C:/hostedtoolcache/windows/Ruby/3.3.8/x64/lib/ruby/3.3.0/bundled_gems.rb:69:in `require'

@MSP-Greg investigate that at https://github.com/ruby/setup-msys2-gcc/pull/26#issuecomment-2874726461.

[deivid (David Rodríguez)]

Some debugging happening at https://github.com/ruby/date/pull/125 already! Should this be moved to the date repo, by the way?

[hsbt (Hiroshi SHIBATA)]

We need to backport fix if the problem is our side. This ticket is reminder for that.

[ntkme (Natsuki Natsume)]

https://github.com/ruby/setup-msys2-gcc/pull/26#issuecomment-2877229861

The root cause is that the extension is compiled against a newer version of libwinpthread-1.dll and headers from msys2, but at the runtime ruby always load $rubyPrefix\bin\ruby_builtin_dlls\libwinpthread-1.dll which is an older version.

I don't think there is much we can do here.

As for ruby/setup-ruby, our plan is to downgrade msys2's libwinpthread-1.dll for all old rubies that bundle the old version of it, so that the compile time version and runtime version would be compatible.