Fix windows build after r19897.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3682 matching lines @@
   for (int i = 0; i < 4; i++) {
     heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
   }
 
   ASSERT(code->marked_for_deoptimization());
 }
 
 
 
 static Handle<JSFunction> OptimizeDummyFunction(const char* name) {
-  char source[256];
-  snprintf(source, sizeof(source),
-           "function %s() { return 0; }"
-           "%s(); %s();"
-           "%%OptimizeFunctionOnNextCall(%s);"
-           "%s();", name, name, name, name, name);
-  CompileRun(source);
+  EmbeddedVector<char, 256> source;
+  OS::SNPrintF(source,
+              "function %s() { return 0; }"
+              "%s(); %s();"
+              "%%OptimizeFunctionOnNextCall(%s);"
+              "%s();", name, name, name, name, name);
+  CompileRun(source.start());
   Handle<JSFunction> fun =
       v8::Utils::OpenHandle(
           *v8::Handle<v8::Function>::Cast(
               CcTest::global()->Get(v8_str(name))));
   return fun;
 }
 
 
 static int GetCodeChainLength(Code* code) {
   int result = 0;
@@ skipping 109 matching lines @@
   v8::Handle<v8::Object> global = CcTest::global();
     v8::Handle<v8::Function> g =
         v8::Handle<v8::Function>::Cast(global->Get(v8_str("crash")));
   v8::Handle<v8::Value> args1[] = { v8_num(1) };
   heap->DisableInlineAllocation();
   heap->set_allocation_timeout(1);
   g->Call(global, 1, args1);
   heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask);
 }
 #endif