win32/vmem.h - memory alignment needed for gcc-12 #19912
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64-bit mingw-w64 ports of gcc version 12 currently build a perl.exe that crashes immediately upon execution.
This PR addresses and resolves that issue.
See discussion at #19824.
Note that the additional issue (of some crashes during 'make test') mentioned there is not addressed by this PR.
It's something that should be fixed ... but I don't have the solution to it.
For now, we can work around that issue by choosing favorable options regarding optimization level and/or threading.
The selection of those options can be made without any need to make further changes to the perl source.
Cheers,
Rob