Make calc_levdist static and fix pointer swapping.

1 files changed, 11 insertions, 3 deletions

diff --git a/ext/standard/levenshtein.c b/ext/standard/levenshtein.c
index a702d3cfea..4227cf05f4 100644
--- a/ext/standard/levenshtein.c
+++ b/ext/standard/levenshtein.c
@@ -23,7 +23,7 @@
 #include <ctype.h>
 #include "php_string.h"
 
-int calc_levdist(const char *s1, const char *s2) /* faster, but obfuscated */
+static int calc_levdist(const char *s1, const char *s2) /* faster, but obfuscated */
 {
 	register char *p1,*p2;
 	register int i,j,n;
@@ -60,8 +60,16 @@ int calc_levdist(const char *s1, const char *s2) /* faster, but obfuscated */
 
 	/* swap if l2 longer than l1 */
 	if(l1<l2) {
-		(long)s1 ^= (long)s2; (long)s2 ^= (long)s1; (long)s1 ^= (long)s2;
-		l1 ^= l2; l2 ^= l1; l1 ^= l2;
+		const char *s3;
+		int l3;
+		
+		s3 = s1;
+		s1 = s2;
+		s2 = s3;
+
+		l3 = l1;
+		l1 = l2;
+		l2 = l3;
 	}