On Thu, 2009-01-15 at 00:26 -0800, Khem Raj wrote:
> On (14/01/09 17:07), Natanael Copa wrote:
> > Hi,
> >
> > This test program segfaults for me on x86, hardened gcc-4.3.2 and
> > uclibc-0.9.30:
> >
> > #include <stdio.h>
> > #include <ctype.h>
> > int main(void) {
> > printf("%i\n", isalnum(0x10000));
> > return 0;
> > }
> >
> >
> > If the ctype.h include is commented out it works as expected.
> >
>
> Well on a different note C99 standard says that for character
> manipulating functions defined in
> ctype.h argument is an int but this shall be representable as an
> unsigned char or EOF any other value results in undefined behavior.
>
> therefore I think we are ok here the above case falls into undefined
> behavior category.
I just came to the same conclusion but you were faster in responding :)
I checked up glibc source and they should have similar behaviour.
I think we can just ignore this.
Thanks!
-nc
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