[Bug 53032] winedevice.exe segfaults on exit when built by GCC >=12.0 and -march=pentium-m

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53032

Bernhard Übelacker <bernhardu at mailbox.org> changed:

           What    |Removed                     |Added
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                 CC|                            |bernhardu at mailbox.org

--- Comment #16 from Bernhard Übelacker <bernhardu at mailbox.org> ---
Created attachment 72435
  --> https://bugs.winehq.org/attachment.cgi?id=72435
debugging-with-rr.txt

I tried if I could reproduce it inside a qemu VM.
And I guess I succeeded in getting at least the "stack overlow" variant.

This combined with rr-debugger and an old but modified version of gdbinit.py
I reached in winedevice.exe a segfault.

(rr) bt
#0  0x7e154db0 in SetupCloseLog ()
#1  0x7bc54b16 in call_dll_entry_point ()
#2  0x7bc59381 in MODULE_InitDLL ()
...

Some notes, the backtrace and singlestepping through SetupCloseLog
showing the esp register are in attached file.

It is a build without mingw compilers and from flags without much debug
information, but function SetupCloseLog is quite short with just a few
function calls.

As far as I see the esp register has "just" the wrong value
when the ret instruction is reached.
Unfortunately I cannot point exactly to a single instruction
which might be wrong.
Maybe someone with better assembly knowledge can have a look?

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