Test ZEND_ACC_NEVER_CACHE behavior

Author: arnaud-lb

Zend/tests/partial_application/never_cache_001.phpt

@@ -0,0 +1,30 @@
+--TEST--
+Inline cache can not be used for ZEND_ACC_NEVER_CACHE functions
+--FILE--
+<?php
+
+$fns = [
+    'return function ($x) { var_dump("A"); };',
+    'return function ($x) { var_dump("B"); };',
+];
+
+function f($f) {
+    $f(0);
+}
+
+foreach ($fns as $f) {
+    f(eval($f));
+}
+
+foreach ($fns as $f) {
+    $f = eval($f);
+    // Closure::__invoke() is ZEND_ACC_NEVER_CACHE
+    f($f->__invoke(?));
+}
+
+?>
+--EXPECT--
+string(1) "A"
+string(1) "B"
+string(1) "A"
+string(1) "B"

Zend/zend_partial.c

@@ -1054,6 +1054,7 @@ static const zend_op_array *zp_get_op_array(zval *this_ptr, zend_function *funct
 	if (EXPECTED(function->type == ZEND_INTERNAL_FUNCTION
 					? cache_slot[0] == function
 					: cache_slot[0] == function->op_array.opcodes)) {
+		ZEND_ASSERT(!(function->common.fn_flags & ZEND_ACC_NEVER_CACHE));
 		return cache_slot[1];
 	}