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Re: Patch for isdigit/isalpha/etc. macro arguments
Mark Kettenis <mark.kettenis@xs4all.nl> writes:
> Bleach! So that's not a viable option. I think it's time to find the
> magic gcc option to turn the warning off. I mean
>
> char *s = "...";
> isalpha(*s);
>
> is perfectly reasonable code and should not result in compiler
> warnings.
This will crash and burn if *s < 0. You really need to cast to unsigned
char if you want to get defined behaviour.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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