[PATCH v3 0/1] MR10068: msvcrt: Create copy of C++ exception object in std::rethrow_exception()

[Piotr Pawłowski (＠DEATH)]

Fixes: https://bugs.winehq.org/show_bug.cgi?id=59329

Resolves whole lot of foobar2000 crashes after media indexing or playback errors (verified).

Passes various C++ exception torture tests I quickly wrote.

Notes about alloca() use-

Size of C++ object is used, one that already existed elsewhere on stack, so it should not be an issue.

MS runtime appears to do the same - copy the exception object on stack before rethrowing.

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  v3: msvcrt: Create copy of C++ exception object in std::rethrow_exception().
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10068