Revision a414f01ac2899f273ef8fe98fa44158ac12793f2 authored by Linus Torvalds on 18 November 2009, 21:31:52 UTC, committed by Linus Torvalds on 19 November 2009, 01:18:13 UTC
Doing the strcmp return value as signed char __res = *cs - *ct; is wrong for two reasons. The subtraction can overflow because __res doesn't use a type big enough. Moreover the compared bytes should be interpreted as unsigned char as specified by POSIX. The same problem is fixed in strncmp. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Michael Buesch <mb@bu3sch.de> Cc: Andreas Schwab <schwab@linux-m68k.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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