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Fix memchr(p, 0, 0) to return NULL instead of p.

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bde 1994-10-27 11:36:11 +00:00
parent 71023484a7
commit cea563ca25
1 changed files with 3 additions and 3 deletions
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6
lib/libc/i386/string/memchr.S
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@ -27,11 +27,11 @@
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* *
* $Id: memchr.S,v 1.1 1993/12/05 13:01:47 ats Exp $ * $Id: memchr.S,v 1.1 1994/08/05 01:18:28 wollman Exp $
*/ */
#if defined(LIBC_RCS) && !defined(lint) #if defined(LIBC_RCS) && !defined(lint)
.asciz "$Id: memchr.S,v 1.1 1993/12/05 13:01:47 ats Exp $" .asciz "$Id: memchr.S,v 1.1 1994/08/05 01:18:28 wollman Exp $"
#endif /* LIBC_RCS and not lint */ #endif /* LIBC_RCS and not lint */
#include "DEFS.h" #include "DEFS.h"
@ -49,7 +49,7 @@ ENTRY(memchr)
movl 8(%esp),%edi /* string address */ movl 8(%esp),%edi /* string address */
movl 12(%esp),%eax /* set character to search for */ movl 12(%esp),%eax /* set character to search for */
movl 16(%esp),%ecx /* set length of search */ movl 16(%esp),%ecx /* set length of search */
testl %eax,%eax /* clear Z flag, for len == 0 */ testl %edi,%edi /* clear Z flag, for len == 0 */
cld /* set search forward */ cld /* set search forward */
repne /* search! */ repne /* search! */
scasb scasb