Vinay Sajip added the comment:
Thanks for the comments. Using your suggestions simplifies things quite a bit.
Still finding my way around :-)
> Regarding structs with bitfields and unions, we could add an stgdict flag to
> prevent passing them as arguments in the Unix X86_64 ABI
Is this to deal with issues #16575, #16576 and #26628? Issue #26628 seems to be
a duplicate of #16575. I can add the flag and set it here, but the checks
should probably be in a separate patch.
> if we forbid passing structs with bitfields in this ABI, then MAX_ELEMENTS
> can be reduced to 8.
Not sure that's the case. For example, if we have to handle
typedef struct {
unsigned char data[12];
} Test;
that would use up 12 slots for the unrolled array. Perhaps you mean 16 rather
than 8?
Updated patch attached.
----------
Added file: http://bugs.python.org/file46663/fix-22273-03.diff
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