Add Dart_PropagateError.

runtime/vm/debugger.cc

 // Copyright (c) 2011, 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 "vm/debugger.h"
 
 #include "vm/code_index_table.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
 #include "vm/flags.h"
@@ skipping 256 matching lines @@
   if (!cls.IsNull()) {
     function = cls.LookupStaticFunction(function_name);
     if (function.IsNull()) {
       function = cls.LookupDynamicFunction(function_name);
     }
   }
   return function.raw();
 }
 
 
-Breakpoint* Debugger::SetBreakpointAtEntry(const Function& target_function) {
+Breakpoint* Debugger::SetBreakpointAtEntry(const Function& target_function,
+                                           Error* error) {
   ASSERT(!target_function.IsNull());
   if (!target_function.HasCode()) {
-    Compiler::CompileFunction(target_function);
+    *error = Compiler::CompileFunction(target_function);
+    if (!error->IsNull()) {
+      return NULL;
+    }
   }
   Code& code = Code::Handle(target_function.code());
   ASSERT(!code.IsNull());
   PcDescriptors& desc = PcDescriptors::Handle(code.pc_descriptors());
   for (int i = 0; i < desc.Length(); i++) {
     PcDescriptors::Kind kind = desc.DescriptorKind(i);
     Breakpoint* bpt = NULL;
     if (kind == PcDescriptors::kIcCall) {
       CodePatcher::PatchInstanceCallAt(
           desc.PC(i), StubCode::BreakpointDynamicEntryPoint());
@@ skipping 107 matching lines @@
 
 
 void Debugger::AddBreakpoint(Breakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(this->breakpoints_);
   this->breakpoints_ = bpt;
 }
 
 
 }  // namespace dart