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Re: [RFC PATCH] diagnose built-in declarations without prototype (PR 83656)
On Wed, Jun 27, 2018 at 09:17:07AM -0600, Jeff Law wrote:
> > About 115 tests fail due to incompatible declarations of
> > the built-in functions below (the number shows the number
> > of warnings for each functions):
> >
> > 428 abort
> > 58 exit
> > 36 memcpy
> > 17 memmove
> > 15 realloc
> > 14 cabs
> > 5 strncpy
> > 4 strcmp
> > 3 alloca
> > 2 rindex
> > 1 aligned_alloc
> I'm supportive of this change. Though I'm more worried about the
> affects on the distros than I am on the testsuite (which I expected to
> be in worse shape WRT this issue than your analysis indicates).
I'm mainly worried about configure tests, those will be hit hardest by
this and might result in silently turning off many features of the compiled
programs.
I think
void abort ();
is very common and if people actually don't pass any arguments to abort, I
think warning by default about this is too much.
Jakub