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Re: gcc 4.1 regression for adjusted function declaration?
Andrew Pinski wrote:
and was said to involve undefined behavior. "However, there is
nothing to
suggest that a not-strictly-conforming array type can magically be
transformed into a strictly conforming pointer parameter via this rule."
Ok, I get it. The 'incomplete type' phrase refers to arrays without a
size expression.
However, these seem not to be covered by the first paragraph of 6.7.5.2 .
I.e. in:
struct tag;
extern void f (struct tag a[]);
the [ and ] don't delimit an expression or * ; the size is not present.
Hence 'a' has incomplete type before adjustment, and is a reference type
(pointer to struct tag) after adjustment.
This, too is rejected by gcc 4.1 . I think the standard says this code
is legal.