Fixes setjmp clobbering warnings.

runtime/vm/parser.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 "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED
 
 #include "lib/invocation_mirror.h"
@@ skipping 810 matching lines @@
     Parser parser(script, lib, cls.token_pos());
     parser.ParseEnumDefinition(cls);
   }
   const int64_t num_tokes_after = STAT_VALUE(thread, num_tokens_consumed);
   INC_STAT(thread, num_class_tokens, num_tokes_after - num_tokes_before);
 }
 
 
 RawObject* Parser::ParseFunctionParameters(const Function& func) {
   ASSERT(!func.IsNull());
-  Thread* thread = Thread::Current();
-  Isolate* isolate = thread->isolate();
-  StackZone stack_zone(thread);
-  Zone* zone = stack_zone.GetZone();
   LongJumpScope jump;
   if (setjmp(*jump.Set()) == 0) {
+    Thread* thread = Thread::Current();
+    StackZone stack_zone(thread);
+    Zone* zone = stack_zone.GetZone();
     const Script& script = Script::Handle(zone, func.script());
     const Class& owner = Class::Handle(zone, func.Owner());
     ASSERT(!owner.IsNull());
     ParsedFunction* parsed_function = new ParsedFunction(
         thread, Function::ZoneHandle(zone, func.raw()));
     Parser parser(script, parsed_function, func.token_pos());
     parser.SkipFunctionPreamble();
     ParamList params;
     parser.ParseFormalParameterList(true, true, &params);
     ParamDesc* param = params.parameters->data();
@@ skipping 10 matching lines @@
       const Object* metadata = param[i].metadata;
       if ((metadata != NULL) && (*metadata).IsError()) {
         return metadata->raw();  // Error evaluating the metadata.
       }
       param_descriptor.SetAt(j + kParameterMetadataOffset,
           (param[i].metadata == NULL) ? Object::null_instance() :
                                         *(param[i].metadata));
     }
     return param_descriptor.raw();
   } else {
+    Thread* thread = Thread::Current();
+    Isolate* isolate = thread->isolate();
     Error& error = Error::Handle();
     error = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
     return error.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 
@@ skipping 124 matching lines @@
     }
     if (!parser.current_function().IsLocalFunction() ||
         ((instantiator != NULL) && instantiator->is_captured())) {
       parsed_function->set_instantiator(instantiator);
     }
   }
 }
 
 
 RawObject* Parser::ParseMetadata(const Class& cls, intptr_t token_pos) {
-  Thread* thread = Thread::Current();
-  Isolate* isolate = thread->isolate();
-  StackZone stack_zone(thread);
-  Zone* zone = stack_zone.GetZone();
   LongJumpScope jump;
   if (setjmp(*jump.Set()) == 0) {
+    Thread* thread = Thread::Current();
+    StackZone stack_zone(thread);
+    Zone* zone = stack_zone.GetZone();
     const Script& script = Script::Handle(zone, cls.script());
     // Parsing metadata can involve following paths in the parser that are
     // normally used for expressions and assume current_function is non-null,
     // so we create a fake function to use as the current_function rather than
     // scattering special cases throughout the parser.
     const Function& fake_function = Function::ZoneHandle(zone, Function::New(
         Symbols::At(),
         RawFunction::kRegularFunction,
         true,  // is_static
         false,  // is_const
         false,  // is_abstract
         false,  // is_external
         false,  // is_native
         cls,
         token_pos));
     fake_function.set_is_debuggable(false);
     ParsedFunction* parsed_function =
         new ParsedFunction(thread, fake_function);
     Parser parser(script, parsed_function, token_pos);
     parser.set_current_class(cls);
 
     RawObject* metadata = parser.EvaluateMetadata();
     return metadata;
   } else {
+    Thread* thread = Thread::Current();
+    Isolate* isolate = thread->isolate();
+    StackZone stack_zone(thread);
+    Zone* zone = stack_zone.GetZone();
     Error& error = Error::Handle(zone);
     error = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
     return error.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 
@@ skipping 13370 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED