Hi, I have identified a pretty nasty bug in the MinGW64 headers.
The case that follows happens for _USE_32BIT_TIME_T undefined
_wstat is defined as _wstat64i32 in _mingw_stat64.h
This function expects a stat argument, and judging from the name the
argument should be of type _stat64i32 instead, stat is defined as_stat64 in
the relevant header (sys/stat.h). We have run into this issue in blender
and _wstat returns erratic sizes, making our thumbnail system, possibly
others too, misbehave.
Indeed substituting stat with _stat64i32 in the code seems to fix the issue
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