Fix Windows build.

src/json-stringifier.h

Index: src/json-stringifier.h
diff --git a/src/json-stringifier.h b/src/json-stringifier.h
index e4eb06e462b3e083f0fe983650deb75c7a0a0d3d..3c49407d5f6a86f2d3a054ddbec6947be82ecae6 100644
--- a/src/json-stringifier.h
+++ b/src/json-stringifier.h
@@ -571,11 +571,15 @@ void BasicJsonStringifier::SerializeStringUnchecked_(const SrcChar* src,
   dest += current_index_;
   DestChar* dest_start = dest;
 
+  // Assert that uc16 character is not truncated down to 8 bit.
+  // The <uc16, char> version of this method must not be called.
+  ASSERT(sizeof(*dest) >= sizeof(*src));

[Michael Starzinger, 2012/10/23 09:36:07]

Could we turn that into a STATIC_ASSERT or does sizeof() not work for
STATIC_ASSERTs?

[Yang, 2012/10/23 09:39:35]

As discussed offline, the <uc16, char> version is compiled, but must not be
called (the compiler doesn't understand the logic behind this, so it compiles
all <{char,uc16}, {char,uc16}> versions. So a STATIC_ASSERT would fail here.

+
   *(dest++) = '"';
   for (int i = 0; i < length; i++) {
     SrcChar c = src[i];
     if (DoNotEscape(c)) {
-      *(dest++) = c;
+      *(dest++) = static_cast<DestChar>(c);
     } else {
       const char* chars = &JsonEscapeTable[c * kJsonEscapeTableEntrySize];
       while (*chars != '\0') *(dest++) = *(chars++);