diff options
Diffstat (limited to 'src/google/protobuf/stubs/strutil.cc')
| -rw-r--r-- | src/google/protobuf/stubs/strutil.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/google/protobuf/stubs/strutil.cc b/src/google/protobuf/stubs/strutil.cc index bb658ba8..ee07ce75 100644 --- a/src/google/protobuf/stubs/strutil.cc +++ b/src/google/protobuf/stubs/strutil.cc @@ -670,7 +670,14 @@ char *InternalFastHexToBuffer(uint64 value, char* buffer, int num_byte) { static const char *hexdigits = "0123456789abcdef"; buffer[num_byte] = '\0'; for (int i = num_byte - 1; i >= 0; i--) { +#ifdef _M_X64 + // MSVC x64 platform has a bug optimizing the uint32(value) in the #else + // block. Given that the uint32 cast was to improve performance on 32-bit + // platforms, we use 64-bit '&' directly. + buffer[i] = hexdigits[value & 0xf]; +#else buffer[i] = hexdigits[uint32(value) & 0xf]; +#endif value >>= 4; } return buffer; |