Make one-character strings into symbols more agressively.

test/cctest/test-profile-generator.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 //
 // Tests of profiles generator and utilities.
 
 #include "v8.h"
 #include "profile-generator-inl.h"
 #include "cctest.h"
 #include "../include/v8-profiler.h"
 
 using i::CodeEntry;
@@ skipping 19 matching lines @@
     return &te->token_removed_;
   }
 };
 
 } }  // namespace v8::internal
 
 TEST(TokenEnumerator) {
   TokenEnumerator te;
   CHECK_EQ(TokenEnumerator::kNoSecurityToken, te.GetTokenId(NULL));
   v8::HandleScope hs;
-  v8::Local<v8::String> token1(v8::String::New("1"));
+  v8::Local<v8::String> token1(v8::String::New("1x"));
   CHECK_EQ(0, te.GetTokenId(*v8::Utils::OpenHandle(*token1)));
   CHECK_EQ(0, te.GetTokenId(*v8::Utils::OpenHandle(*token1)));
-  v8::Local<v8::String> token2(v8::String::New("2"));
+  v8::Local<v8::String> token2(v8::String::New("2x"));
   CHECK_EQ(1, te.GetTokenId(*v8::Utils::OpenHandle(*token2)));
   CHECK_EQ(1, te.GetTokenId(*v8::Utils::OpenHandle(*token2)));
   CHECK_EQ(0, te.GetTokenId(*v8::Utils::OpenHandle(*token1)));
   {
     v8::HandleScope hs;
-    v8::Local<v8::String> token3(v8::String::New("3"));
+    v8::Local<v8::String> token3(v8::String::New("3x"));
     CHECK_EQ(2, te.GetTokenId(*v8::Utils::OpenHandle(*token3)));
     CHECK_EQ(1, te.GetTokenId(*v8::Utils::OpenHandle(*token2)));
     CHECK_EQ(0, te.GetTokenId(*v8::Utils::OpenHandle(*token1)));
   }
   CHECK(!i::TokenEnumeratorTester::token_removed(&te)->at(2));
   HEAP->CollectAllGarbage(false);
   CHECK(i::TokenEnumeratorTester::token_removed(&te)->at(2));
   CHECK_EQ(1, te.GetTokenId(*v8::Utils::OpenHandle(*token2)));
   CHECK_EQ(0, te.GetTokenId(*v8::Utils::OpenHandle(*token1)));
 }
@@ skipping 753 matching lines @@
     i::Vector<char> title = i::Vector<char>::New(16);
     i::OS::SNPrintF(title, "%d", i);
     CHECK(collection.StartProfiling(title.start(), i + 1));  // UID must be > 0.
     titles[i] = title.start();
   }
   CHECK(!collection.StartProfiling(
       "maximum", CpuProfilesCollection::kMaxSimultaneousProfiles + 1));
   for (int i = 0; i < CpuProfilesCollection::kMaxSimultaneousProfiles; ++i)
     i::DeleteArray(titles[i]);
 }