[Bug c/77392] Premature optimization based on return data from thread

[mednafen at sent dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77392

mednafen at sent dot com changed:

           What    |Removed                     |Added
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                 CC|                            |mednafen at sent dot com

--- Comment #1 from mednafen at sent dot com ---
The return type for the thread entry point function is wrong, and the variable
whose address/pointer you're passing to pthread_join is of the wrong type,
which is probably leading to stack corruption.  These are things the compiler
should have warned or errored-out about if not for the explicit void* casts.