Avoid underflow if *size == 0.

git-svn-id: svn+ssh://svn.openpam.org/svn/openpam/trunk@536 185d5e19-27fe-0310-9dcf-9bff6b9f3609
2012-03-31 15:34:19 +00:00 · 2012-03-31 15:34:19 +00:00 · 74c787f664
parent 8e881dbdd7
commit 74c787f664
1 changed files with 1 additions and 1 deletions
--- a/lib/openpam_straddch.c
+++ b/lib/openpam_straddch.c
@ -61,7 +61,7 @@ openpam_straddch(char **str, size_t *size, size_t *len, int ch)
 		*str = tmpstr;
 		*size = tmpsize;
 		*len = 0;
-	} else if (*len >= *size - 1) {
+	} else if (*len + 1 >= *size) {
 		/* additional space required */
 		tmpsize = *size * 2;
 		if ((tmpstr = realloc(*str, tmpsize)) == NULL) {