Fix missing new Foo(...) error in constant expressions

Though first-class callables are now supported in constant expressions, they
remain unsupported for the new expression.

Fixes GH-20113
Closes GH-20115

NEWS

@@ -2,11 +2,14 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 8.5.0RC3
 
+- Core:
+  . Fixed bug GH-20113 (Missing new Foo(...) error in constant expressions).
+    (ilutov)
+
 - FPM:
   . Fixed bug GH-19817 (Decode SCRIPT_FILENAME issue in php 8.5).
     (Jakub Zelenka)
 
-
 - SPL:
   . Fixed bug GH-20101 (SplHeap/SplPriorityQueue serialization
     exposes INDIRECTs). (nielsdos)

Zend/tests/gh20113.phpt

@@ -0,0 +1,8 @@
+--TEST--
+GH-20113: new Foo(...) error in constant expressions
+--FILE--
+<?php
+const C = new \stdClass(...);
+?>
+--EXPECTF--
+Fatal error: Cannot create Closure for new expression in %s on line %d

Zend/zend_compile.c

@@ -11468,6 +11468,11 @@ static void zend_compile_const_expr_new(zend_ast **ast_ptr)
 {
 	zend_ast *class_ast = (*ast_ptr)->child[0];
 	zend_compile_const_expr_class_reference(class_ast);
+
+	zend_ast *args_ast = (*ast_ptr)->child[1];
+	if (args_ast->kind == ZEND_AST_CALLABLE_CONVERT) {
+		zend_error_noreturn(E_COMPILE_ERROR, "Cannot create Closure for new expression");
+	}
 }
 
 static void zend_compile_const_expr_closure(zend_ast **ast_ptr)