[Bug 54555] New: winmm:mci sometimes crashes on exit on Windows

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54555

Bug ID: 54555
           Summary: winmm:mci sometimes crashes on exit on Windows
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: winmm&mci
          Assignee: [e-mail]
          Reporter: [e-mail]

winmm:mci sometimes crashes on exit on Windows:

0fec:mci: 675 tests executed (0 marked as todo, 0 as flaky, 0 failures), 0
skipped.
mci.c:1796: this is the last test seen before the exception
0fec:mci: unhandled exception c0000005 at 75B37660
winmm:mci:0fec done (-1073741819) in 15s 453B

See https://test.winehq.org/data/patterns.html#winmm:mci

The "tests executed" line indicates that the crash happened either in the test
framework's main function or on process exit. The usual suspects are memory /
stack corruption, threads running code from unloaded dlls, etc. There is a
comment indicating that "Win9X hangs when exiting with something still open".
Maybe the "close all" command it not always completely effective.

The oldest known instance was on 2022-08-31 and this happened 8 times until
2022-12-07, and then twice in February 2023. It's not clear if the December and
January hiatus was just pure luck or if this is caused by external interference
that went away during that period.

This also seems to be specific to Windows 10 2004+.