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

runtime/vm/flow_graph_compiler.cc

Index: runtime/vm/flow_graph_compiler.cc
diff --git a/runtime/vm/flow_graph_compiler.cc b/runtime/vm/flow_graph_compiler.cc
index 4388c181ef6a3b4685589d49f81fcbeda3aa81ff..aa8aa6030f9c7170490b0a0ff66df4d603ce1b10 100644
--- a/runtime/vm/flow_graph_compiler.cc
+++ b/runtime/vm/flow_graph_compiler.cc
@@ -671,10 +671,13 @@ void FlowGraphCompiler::GenerateDeferredCode() {
 void FlowGraphCompiler::AddExceptionHandler(intptr_t try_index,
                                             intptr_t outer_try_index,
                                             intptr_t pc_offset,
+                                            TokenPosition token_pos,
+                                            bool is_generated,
                                             const Array& handler_types,
                                             bool needs_stacktrace) {
   exception_handlers_list_->AddHandler(try_index, outer_try_index, pc_offset,
-                                       handler_types, needs_stacktrace);
+                                       token_pos, is_generated, handler_types,
+                                       needs_stacktrace);
 }