https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82028
LIU Hao <lh_mouse at 126 dot com> changed:
What |Removed |Added
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CC| |lh_mouse at 126 dot com
--- Comment #2 from LIU Hao <lh_mouse at 126 dot com> ---
As per
<https://docs.microsoft.com/en-us/cpp/build/x64-calling-convention?view=msvc-170#parameter-passing>
> Structs and unions of size 8, 16, 32, or 64 bits, and __m64 types, are
> passed as if they were integers of the same size. Structs or unions of
> other sizes are passed as a pointer to memory allocated by the caller.
GCC behavior seems incorrect.
