Yet another check for php_strip_tags_ex()

diff --git a/ext/standard/string.c b/ext/standard/string.c
index f443519a72931c789438cc78597255f6b9e237ef..38180106d547de9618e12f8709cf24cf26dba2bc 100644 (file)
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -5266,7 +5266,7 @@ state_2:
                        break;
                case '"':
                case '\'':
-                       if (*(p-1) != '\\') {
+                       if (p >= buf + 1 && *(p-1) != '\\') {
                                if (lc == c) {
                                        lc = '\0';
                                } else if (lc != '\\') {