JIT: Fixed FETCH_LIST_R on string

Author: dstogov

ext/opcache/jit/zend_jit_x86.dasc

@@ -12024,7 +12024,7 @@ static int zend_jit_fetch_dim_read(dasm_State        **Dst,
 		}
 
 		if ((op1_info & ((MAY_BE_ANY|MAY_BE_UNDEF)-(MAY_BE_ARRAY|MAY_BE_OBJECT|may_be_string)))
-		 && (!exit_addr || !(op1_info & (MAY_BE_ARRAY|MAY_BE_OBJECT|MAY_BE_STRING)))) {
+		 && (!exit_addr || !(op1_info & (MAY_BE_ARRAY|MAY_BE_OBJECT|may_be_string)))) {
 			if (opline->opcode != ZEND_FETCH_DIM_IS && opline->opcode != ZEND_FETCH_LIST_R) {
 				if ((op1_info & MAY_BE_UNDEF) || (op2_info & MAY_BE_UNDEF)) {
 					|	LOAD_ZVAL_ADDR FCARG1a, orig_op1_addr

ext/opcache/tests/jit/fetch_list_r_001.phpt

@@ -0,0 +1,18 @@
+--TEST--
+JIT FETCH_LIST_R: 001
+--INI--
+opcache.enable=1
+opcache.enable_cli=1
+opcache.file_update_protection=0
+opcache.jit_buffer_size=1M
+--FILE--
+<?php
+function test() {
+    $v = 'a';
+    list($$v) = "";
+    var_dump($a);
+}
+test();
+?>
+--EXPECT--
+NULL