Fixed test failure.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@172 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-strings.cc

@@ -351,7 +351,7 @@ TEST(Utf8Conversion) {
   // U+3045 -> E3 81 85
   const uint16_t mixed_string[] = {0x02E4, 0x0064, 0x12E4, 0x0030, 0x3045};
   // The characters we expect to be output
-  const int as_utf8[11] = {0xCB, 0xA4, 0x64, 0xE1, 0x8B, 0xA4, 0x30,
+  const unsigned char as_utf8[11] = {0xCB, 0xA4, 0x64, 0xE1, 0x8B, 0xA4, 0x30,
       0xE3, 0x81, 0x85, 0x00};
   // The number of bytes expected to be written for each length
   const int lengths[12] = {0, 0, 2, 3, 3, 3, 6, 7, 7, 7, 10, 11};
@@ -367,7 +367,7 @@ TEST(Utf8Conversion) {
     CHECK_EQ(lengths[i], written);
     // Check that the contents are correct
     for (int j = 0; j < lengths[i]; j++)
-      CHECK_EQ(as_utf8[j], buffer[j]);
+      CHECK_EQ(as_utf8[j], static_cast<unsigned char>(buffer[j]));
     // Check that the rest of the buffer hasn't been touched
     for (int j = lengths[i]; j < 11; j++)
       CHECK_EQ(-1, buffer[j]);