Avoid possible conditional jump depended on uninitialised value

diff --git a/ext/opcache/Optimizer/block_pass.c b/ext/opcache/Optimizer/block_pass.c
index 4dbb7c568d23e76634c281870aebf463f6eccb41..b8c381406b38df07d3c5ce3d725ac7ee26a30cf6 100644 (file)
--- a/ext/opcache/Optimizer/block_pass.c
+++ b/ext/opcache/Optimizer/block_pass.c
@@ -1257,14 +1257,15 @@ static void assemble_code_blocks(zend_cfg *cfg, zend_op_array *op_array)
                }
                cur_block = cur_block->next;
        }
-#if ZEND_EXTENSION_API_NO < PHP_5_3_X_API_NO
-       if (opline[-1].opcode == ZEND_THROW) {
+
+       if ((opline-1)->opcode == ZEND_THROW) {
                /* if we finished with THROW, we need to add space between THROW and HANDLE to not confuse
                   zend_throw_internal */
                MAKE_NOP(opline);
                opline->lineno = opline[-1].lineno;
                opline++;
        }
+#if ZEND_EXTENSION_API_NO < PHP_5_3_X_API_NO
        MAKE_NOP(opline);
        opline->opcode = ZEND_HANDLE_EXCEPTION;
        opline->lineno = opline[-1].lineno;