Make preparser detect duplicate parameters and object literal properties.

src/conversions.cc

Index: src/conversions.cc
diff --git a/src/conversions.cc b/src/conversions.cc
index 232eda08c933cf7bf6418e58edf1a0c2e66ee2c2..b12757e553984f328ffa4b23679330db245168e3 100644
--- a/src/conversions.cc
+++ b/src/conversions.cc
@@ -26,6 +26,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdarg.h>
+#include <math.h>
 #include <limits.h>
 
 #include "conversions-inl.h"
@@ -390,7 +391,7 @@ char* DoubleToRadixCString(double value, int radix) {
   int integer_pos = kBufferSize - 2;
   do {
     integer_buffer[integer_pos--] =
-        chars[static_cast<int>(modulo(integer_part, radix))];
+        chars[static_cast<int>(fmod(integer_part, radix))];
     integer_part /= radix;
   } while (integer_part >= 1.0);
   // Sanity check.
@@ -430,24 +431,4 @@ char* DoubleToRadixCString(double value, int radix) {
   return builder.Finalize();
 }
 
-
-static Mutex* dtoa_lock_one = OS::CreateMutex();
-static Mutex* dtoa_lock_zero = OS::CreateMutex();
-
-
 } }  // namespace v8::internal
-
-
-extern "C" {
-void ACQUIRE_DTOA_LOCK(int n) {
-  ASSERT(n == 0 || n == 1);
-  (n == 0 ? v8::internal::dtoa_lock_zero : v8::internal::dtoa_lock_one)->Lock();
-}
-
-
-void FREE_DTOA_LOCK(int n) {
-  ASSERT(n == 0 || n == 1);
-  (n == 0 ? v8::internal::dtoa_lock_zero : v8::internal::dtoa_lock_one)->
-      Unlock();
-}
-}