Make valgrind a bit more happy by zero-terminating/initializing strings.

src/compiler/pipeline.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 273 matching lines @@
 
 
 static void TraceSchedule(Schedule* schedule) {
   if (!FLAG_trace_turbo_graph && !FLAG_trace_turbo_scheduler) return;
   OFStream os(stdout);
   os << "-- Schedule --------------------------------------\n" << *schedule;
 }
 
 
 static SmartArrayPointer<char> GetDebugName(CompilationInfo* info) {
-  SmartArrayPointer<char> name;
-  if (info->IsStub()) {
-    if (info->code_stub() != NULL) {
-      CodeStub::Major major_key = info->code_stub()->MajorKey();
-      const char* major_name = CodeStub::MajorName(major_key, false);
-      size_t len = strlen(major_name);
-      name.Reset(new char[len]);
-      memcpy(name.get(), major_name, len);
-    }
+  if (info->code_stub() != NULL) {
+    CodeStub::Major major_key = info->code_stub()->MajorKey();
+    const char* major_name = CodeStub::MajorName(major_key, false);
+    size_t len = strlen(major_name) + 1;
+    SmartArrayPointer<char> name(new char[len]);
+    memcpy(name.get(), major_name, len);
+    return name;
   } else {
     AllowHandleDereference allow_deref;
-    name = info->function()->debug_name()->ToCString();
+    return info->function()->debug_name()->ToCString();
   }
-  return name;
 }
 
 
 class AstGraphBuilderWithPositions : public AstGraphBuilder {
  public:
   AstGraphBuilderWithPositions(Zone* local_zone, CompilationInfo* info,
                                JSGraph* jsgraph,
                                LoopAssignmentAnalysis* loop_assignment,
                                SourcePositionTable* source_positions)
       : AstGraphBuilder(local_zone, info, jsgraph, loop_assignment),
@@ skipping 880 matching lines @@
 
   if (FLAG_trace_turbo && !data->MayHaveUnverifiableGraph()) {
     TurboCfgFile tcf(data->isolate());
     tcf << AsC1VAllocator("CodeGen", data->register_allocator());
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8