- MFH: prevent unwanted overflow

18 years ago · fb8c6db95a
1 changed files with 3 additions and 0 deletions
--- a/ext/mbstring/libmbfl/mbfl/mbfilter.c
+++ b/ext/mbstring/libmbfl/mbfl/mbfilter.c
@ -906,6 +906,9 @@ mbfl_strpos(

 	if (offset < 0) {
 		negative_offset = -offset - pc.needle_len;
+		if (negative_offset < 0) {
+			negative_offset = 0;
+		}
 		offset = 0;
 	}