diff options
| -rw-r--r-- | Zend/zend_operators.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Zend/zend_operators.c b/Zend/zend_operators.c index 196d63dfae..bde59333b9 100644 --- a/Zend/zend_operators.c +++ b/Zend/zend_operators.c @@ -1227,7 +1227,7 @@ ZEND_API int concat_function(zval *result, zval *op1, zval *op2 TSRMLS_DC) /* {{ if (result==op1) { /* special case, perform operations on result */ uint res_len = Z_STRLEN_P(op1) + Z_STRLEN_P(op2); - if (Z_STRLEN_P(result) < 0) { + if (Z_STRLEN_P(result) < 0 || (int) (Z_STRLEN_P(op1) + Z_STRLEN_P(op2)) < 0) { efree(Z_STRVAL_P(result)); ZVAL_EMPTY_STRING(result); zend_error(E_ERROR, "String size overflow"); |