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| author | dg <dg@FreeBSD.org> | 1994-11-25 04:11:19 +0000 |
|---|---|---|
| committer | dg <dg@FreeBSD.org> | 1994-11-25 04:11:19 +0000 |
| commit | fa43022815e442e55f48414a5ae8923e84980912 (patch) | |
| tree | 765efc0b16c0ca4f3d0f4f8ee4623280ea6852dd /lib/libc/i386/string | |
| parent | 885bd2dad5b99aeb3dca43beaf5bc770e19a299d (diff) | |
| download | FreeBSD-src-fa43022815e442e55f48414a5ae8923e84980912.zip FreeBSD-src-fa43022815e442e55f48414a5ae8923e84980912.tar.gz | |
Fixed bugs related to returning NULL if length is zero.
Diffstat (limited to 'lib/libc/i386/string')
| -rw-r--r-- | lib/libc/i386/string/memchr.S | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/libc/i386/string/memchr.S b/lib/libc/i386/string/memchr.S index 12a9298..a1b2bcc 100644 --- a/lib/libc/i386/string/memchr.S +++ b/lib/libc/i386/string/memchr.S @@ -27,11 +27,11 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: memchr.S,v 1.1 1994/08/05 01:18:28 wollman Exp $ + * $Id: memchr.S,v 1.2 1994/10/27 11:36:11 bde Exp $ */ #if defined(LIBC_RCS) && !defined(lint) - .asciz "$Id: memchr.S,v 1.1 1994/08/05 01:18:28 wollman Exp $" + .asciz "$Id: memchr.S,v 1.2 1994/10/27 11:36:11 bde Exp $" #endif /* LIBC_RCS and not lint */ #include "DEFS.h" @@ -49,7 +49,8 @@ ENTRY(memchr) movl 8(%esp),%edi /* string address */ movl 12(%esp),%eax /* set character to search for */ movl 16(%esp),%ecx /* set length of search */ - testl %edi,%edi /* clear Z flag, for len == 0 */ + testl %ecx,%ecx /* return NULL if len == 0 */ + jz L1 cld /* set search forward */ repne /* search! */ scasb |
