Optimizer: Don't propagate constants into MAKE_REF

This occurs in Zend/tests/assign_ref_error_var_handling.phpt,
added in 95a07099359a91b81964565703a0991a55fb6889.

diff --git a/ext/opcache/Optimizer/zend_optimizer.c b/ext/opcache/Optimizer/zend_optimizer.c
index 89f57a029ec0f570efcd31a6fc7503fc9fd54ee4..0b4d7f82a0c60fa10820bbb16579967d7f1e38d2 100644 (file)
--- a/ext/opcache/Optimizer/zend_optimizer.c
+++ b/ext/opcache/Optimizer/zend_optimizer.c
@@ -270,6 +270,7 @@ int zend_optimizer_update_op1_const(zend_op_array *op_array,
                case ZEND_ASSIGN_DIM:
                case ZEND_RETURN_BY_REF:
                case ZEND_INSTANCEOF:
+               case ZEND_MAKE_REF:
                        return 0;
                case ZEND_CATCH:
                        REQUIRES_STRING(val);