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Re: Doing an abort for invalid va_arg type
- From: Geoff Keating <geoffk at geoffk dot org>
- To: Corey Minyard <minyard at acm dot org>
- Cc: gcc-patches at gcc dot gnu dot org
- Date: 06 Jun 2003 14:11:24 -0700
- Subject: Re: Doing an abort for invalid va_arg type
- References: <3EE0C94C.6060506@acm.org>
Corey Minyard <minyard@acm.org> writes:
> I'm working on a situation where the compiler is producing an
> abort when passing a "char" into va_arg.
>
> I know that the code is invalid, but this involves legacy systems.
> I would think it better to produce an error in this case, on the
> principle that bugs are cheaper to fix the sooner you find them.
The compiler used to do this, but it was pointed out that it's perfectly
legal C to use this construct, so long as it never gets executed. Thus
the abort.
The compiler does always produce a warning.
...
> If that isn't acceptable, what about adding a flag to cause an
> error any time the compiler would produce an abort?
Have you tried -Werror?
--
- Geoffrey Keating <geoffk@geoffk.org>