Use binary search in GetScriptLineNumber.

test/cctest/test-compiler.cc

Index: test/cctest/test-compiler.cc
diff --git a/test/cctest/test-compiler.cc b/test/cctest/test-compiler.cc
index 05c29d7107eed6ad4ceea59d1b91de396ec2b1cc..da675d741de6c6f09fcdbdcdd88aaa65e8efde14 100644
--- a/test/cctest/test-compiler.cc
+++ b/test/cctest/test-compiler.cc
@@ -317,3 +317,27 @@ TEST(Regression236) {
   CHECK_EQ(-1, GetScriptLineNumber(script, 100));
   CHECK_EQ(-1, GetScriptLineNumber(script, -1));
 }
+
+
+TEST(GetScriptLineNumber) {
+  LocalContext env;
+  v8::HandleScope scope;
+  v8::ScriptOrigin origin = v8::ScriptOrigin(v8::String::New("test"));
+  const char function_f[] = "function f() {}";
+  const int max_rows = 1000;
+  const int buffer_size = max_rows + sizeof(function_f);
+  ScopedVector<char> buffer(buffer_size);
+  memset(buffer.start(), '\n', buffer_size - 1);
+  buffer[buffer_size - 1] = '\0';
+
+  for (int i = 0; i < max_rows; ++i) {
+    if (i > 0)
+      buffer[i - 1] = '\n';
+    memcpy(&buffer[i], function_f, sizeof(function_f) - 1);
+    v8::Handle<v8::String> script_body = v8::String::New(buffer.start());
+    v8::Script::Compile(script_body, &origin)->Run();
+    v8::Local<v8::Function> f = v8::Local<v8::Function>::Cast(
+        env->Global()->Get(v8::String::New("f")));
+    CHECK_EQ(i, f->GetScriptLineNumber());
+  }
+}