Add check in assign-to-self branch

bp1222 · bp1222 · commit 196dd1db58f3 · 2017-11-20T08:32:02.000-07:00
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
@@ -3049,7 +3049,12 @@ void zend_compile_assign(znode *result, zend_ast *ast) /* {{{ */
 				znode cv_node;
 
 				if (zend_try_compile_cv(&cv_node, expr_ast) == FAILURE) {
-					zend_compile_simple_var_no_cv(&expr_node, expr_ast, BP_VAR_R, 0);
+					if (zend_compile_list_assign_requires_w(var_ast)) {
+						zend_compile_simple_var_no_cv(&expr_node, expr_ast, BP_VAR_W, 0);
+						zend_emit_op(&expr_node, ZEND_MAKE_REF, &expr_node, NULL);
+					} else {
+						zend_compile_simple_var_no_cv(&expr_node, expr_ast, BP_VAR_R, 0);
+					}
 				} else {
 					zend_emit_op(&expr_node, ZEND_QM_ASSIGN, &cv_node, NULL);
 				}
