Messages in this thread | | | Date | Sat, 21 Sep 2002 20:30:33 +0300 | From | Dan Aloni <> | Subject | Re: [PATCH] fix to strchr() in lib/string.c |
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On Sat, Sep 21, 2002 at 12:25:59PM -0400, Nicolas Pitre wrote: > > The return value of strchr("foo",0) should be the start address of > "foo" + 3, not NULL.
Correct me if I'm wrong, but no fix is needed.
strchr("foo", 0) doesn't return NULL, for the simple fact that the loop will stop when reaching '\0' before the 'if' that returns NULL, and then s will be returned.
If it wasn't like this, add_stats() (in net/atm/proc.c) would have Oopsed on us long ago.
> --- linux/lib/string.c Thu Aug 1 17:16:34 2002 > +++ linux/lib/string.c Sat Sep 21 12:21:54 2002 > @@ -190,10 +190,11 @@ > */ > char * strchr(const char * s, int c) > { > - for(; *s != (char) c; ++s) > - if (*s == '\0') > - return NULL; > - return (char *) s; > + do { > + if (*s == (char) c) > + return (char *) s; > + } while (*s++); > + return NULL; > } > #endif > >
-- Dan Aloni da-x@gmx.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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