From e9df2ca81401f73af25d95e8f6c3205296a7a09c Mon Sep 17 00:00:00 2001
From: kisbg <kisbg@inf.u-szeged.hu>
Date: Thu, 4 Feb 2021 14:30:11 +0100
Subject: [PATCH] Add newtarget support AsyncFunction (#4560)

JerryScript-DCO-1.0-Signed-off-by: bence gabor kis kisbg@inf.u-szeged.hu
---
 .../ecma/operations/ecma-function-object.c    | 24 +++++++++----------
 tests/test262-esnext-excludelist.xml          |  2 --
 2 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/jerry-core/ecma/operations/ecma-function-object.c b/jerry-core/ecma/operations/ecma-function-object.c
index a5888f0af..0e61cbc5b 100644
--- a/jerry-core/ecma/operations/ecma-function-object.c
+++ b/jerry-core/ecma/operations/ecma-function-object.c
@@ -492,28 +492,28 @@ ecma_op_create_dynamic_function (const ecma_value_t *arguments_list_p, /**< argu
 
 #if ENABLED (JERRY_ESNEXT)
   ecma_object_t *new_target_p = JERRY_CONTEXT (current_new_target_p);
+  ecma_builtin_id_t fallback_ctor = ECMA_BUILTIN_ID_FUNCTION;
 
   if (JERRY_UNLIKELY (parse_opts & (ECMA_PARSE_GENERATOR_FUNCTION | ECMA_PARSE_ASYNC_FUNCTION)))
   {
-    fallback_proto = ECMA_BUILTIN_ID_GENERATOR;
+    fallback_proto = ECMA_BUILTIN_ID_ASYNC_GENERATOR;
+    fallback_ctor = ECMA_BUILTIN_ID_ASYNC_GENERATOR_FUNCTION;
 
-    if (parse_opts & ECMA_PARSE_ASYNC_FUNCTION)
+    if (!(parse_opts & ECMA_PARSE_GENERATOR_FUNCTION))
     {
-      fallback_proto = ECMA_BUILTIN_ID_ASYNC_GENERATOR;
-
-      if (new_target_p == NULL)
-      {
-        new_target_p = ecma_builtin_get (ECMA_BUILTIN_ID_ASYNC_GENERATOR_FUNCTION);
-      }
+      fallback_proto = ECMA_BUILTIN_ID_ASYNC_FUNCTION_PROTOTYPE;
+      fallback_ctor = ECMA_BUILTIN_ID_ASYNC_FUNCTION;
     }
-    else if (new_target_p == NULL)
+    else if (!(parse_opts & ECMA_PARSE_ASYNC_FUNCTION))
     {
-      new_target_p = ecma_builtin_get (ECMA_BUILTIN_ID_GENERATOR_FUNCTION);
+      fallback_proto = ECMA_BUILTIN_ID_GENERATOR;
+      fallback_ctor = ECMA_BUILTIN_ID_GENERATOR_FUNCTION;
     }
   }
-  else if (new_target_p == NULL)
+
+  if (new_target_p == NULL)
   {
-    new_target_p = ecma_builtin_get (ECMA_BUILTIN_ID_FUNCTION);
+    new_target_p = ecma_builtin_get (fallback_ctor);
   }
 
   ecma_object_t *proto = ecma_op_get_prototype_from_constructor (new_target_p, fallback_proto);
diff --git a/tests/test262-esnext-excludelist.xml b/tests/test262-esnext-excludelist.xml
index 863d7c479..6958cf47f 100644
--- a/tests/test262-esnext-excludelist.xml
+++ b/tests/test262-esnext-excludelist.xml
@@ -8487,7 +8487,6 @@
   <test id="annexB/language/statements/const/dstr/object-pattern-emulates-undefined.js"><reason></reason></test>
   <test id="annexB/language/statements/for-of/iterator-close-return-emulates-undefined-throws-when-called.js"><reason></reason></test>
   <test id="annexB/language/statements/function/default-parameters-emulates-undefined.js"><reason></reason></test>
-  <test id="built-ins/AsyncFunction/proto-from-ctor-realm.js"><reason></reason></test>
   <test id="built-ins/Atomics/notify/bigint/notify-all-on-loc.js"><reason></reason></test>
   <test id="built-ins/Atomics/notify/count-defaults-to-infinity-missing.js"><reason></reason></test>
   <test id="built-ins/Atomics/notify/count-defaults-to-infinity-undefined.js"><reason></reason></test>
@@ -8738,5 +8737,4 @@
   <test id="built-ins/TypedArrayConstructors/internals/Set/detached-buffer.js"><reason></reason></test>
   <test id="built-ins/TypedArrayConstructors/internals/Set/tonumber-value-detached-buffer.js"><reason></reason></test>
   <!-- END - Missing test262 support in JerryScript REPL - missing $262.detachArrayBuffer function -->
-
 </excludeList>