Track the 'awaiter return' call stack use it to detect uncaught exceptions in async functions

runtime/vm/object_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 
 #include "vm/assembler.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 2781 matching lines @@
 #endif  // ARCH_IS_64_BIT
 
 
 ISOLATE_UNIT_TEST_CASE(ExceptionHandlers) {
   const int kNumEntries = 4;
   // Add an exception handler table to the code.
   ExceptionHandlers& exception_handlers = ExceptionHandlers::Handle();
   exception_handlers ^= ExceptionHandlers::New(kNumEntries);
   const bool kNeedsStackTrace = true;
   const bool kNoStackTrace = false;
-  exception_handlers.SetHandlerInfo(0, -1, 20u, kNeedsStackTrace, false);
-  exception_handlers.SetHandlerInfo(1, 0, 30u, kNeedsStackTrace, false);
-  exception_handlers.SetHandlerInfo(2, -1, 40u, kNoStackTrace, true);
-  exception_handlers.SetHandlerInfo(3, 1, 150u, kNoStackTrace, true);
+  exception_handlers.SetHandlerInfo(0, -1, 20u, kNeedsStackTrace, false,
+                                    TokenPosition::kNoSource, true);
+  exception_handlers.SetHandlerInfo(1, 0, 30u, kNeedsStackTrace, false,
+                                    TokenPosition::kNoSource, true);
+  exception_handlers.SetHandlerInfo(2, -1, 40u, kNoStackTrace, true,
+                                    TokenPosition::kNoSource, true);
+  exception_handlers.SetHandlerInfo(3, 1, 150u, kNoStackTrace, true,
+                                    TokenPosition::kNoSource, true);
 
   extern void GenerateIncrement(Assembler * assembler);
   Assembler _assembler_;
   GenerateIncrement(&_assembler_);
   Code& code = Code::Handle(Code::FinalizeCode(
       Function::Handle(CreateFunction("Test_Code")), &_assembler_));
   code.set_exception_handlers(exception_handlers);
 
   // Verify the exception handler table entries by accessing them.
   const ExceptionHandlers& handlers =
@@ skipping 1885 matching lines @@
   // utf32->utf16 conversion.
   int32_t char_codes[] = {0,      0x0a,   0x0d,   0x7f,   0xff,
                           0xffff, 0xd800, 0xdc00, 0xdbff, 0xdfff};
 
   const String& str =
       String::Handle(String::FromUTF32(char_codes, ARRAY_SIZE(char_codes)));
   EXPECT(str.Equals(char_codes, ARRAY_SIZE(char_codes)));
 }
 
 }  // namespace dart