Re: expected_retval attribute proposal

["Martin v. Loewis" <martin at loewis dot home dot cs dot tu-berlin dot de>]

> I´ve had basically malloc (with inexpected value of NULL),

Ok, let's take that as an example. There are 526 calls to malloc in
gcc/*.c (actually, most of them to xmalloc). Of those, only three
appear directly nested inside 'if ('.

In any case, I'd expect the overhead of the malloc implementation to
be magnitudes larger than the performance difference obtained from
better branch prediction; the same goes for getc, fputc and other
common memory management/stdio functions.

Regards,
Martin