32   int result = vsnprintf(space, sizeof(space), format, backup_ap);  in StringAppendV()  local
35   if (result < static_cast<int>(sizeof(space))) {  in StringAppendV()
36     if (result >= 0) {  in StringAppendV()
38       dst->append(space, result);  in StringAppendV()
42     if (result < 0) {  in StringAppendV()
50   int length = result+1;  in StringAppendV()
55   result = vsnprintf(buf, length, format, backup_ap);  in StringAppendV()
58   if (result >= 0 && result < length) {  in StringAppendV()
60     dst->append(buf, result);  in StringAppendV()
68   std::string result;  in StringPrintf()  local
69   StringAppendV(&result, fmt, ap);  in StringPrintf()
71   return result;  in StringPrintf()