diff options
Diffstat (limited to 'src/google/protobuf/stubs/hash.h')
| -rw-r--r-- | src/google/protobuf/stubs/hash.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/google/protobuf/stubs/hash.h b/src/google/protobuf/stubs/hash.h index be998b29..612b5861 100644 --- a/src/google/protobuf/stubs/hash.h +++ b/src/google/protobuf/stubs/hash.h @@ -40,10 +40,9 @@ #define GOOGLE_PROTOBUF_HAVE_HASH_MAP 1 #define GOOGLE_PROTOBUF_HAVE_HASH_SET 1 -#define GOOGLE_PROTOBUF_HAVE_64BIT_HASH 1 // Use C++11 unordered_{map|set} if available. -#if ((_LIBCPP_STD_VER >= 11) || \ +#if ((defined(_LIBCPP_STD_VER) && _LIBCPP_STD_VER >= 11) || \ (((__cplusplus >= 201103L) || defined(__GXX_EXPERIMENTAL_CXX0X)) && \ (__GLIBCXX__ > 20090421))) # define GOOGLE_PROTOBUF_HAS_CXX11_HASH @@ -93,8 +92,11 @@ # define GOOGLE_PROTOBUF_HASH_SET_CLASS hash_set # endif +// GCC <= 4.1 does not define std::tr1::hash for `long long int` or `long long unsigned int` # if __GNUC__ == 4 && __GNUC__MINOR__ <= 1 -# undef GOOGLE_PROTOBUF_HAVE_64BIT_HASH +# define GOOGLE_PROTOBUF_MISSING_HASH +# include <map> +# include <set> # endif // Version checks for MSC. @@ -348,7 +350,7 @@ struct hash<const char*> { inline size_t operator()(const char* str) const { size_t result = 0; for (; *str != '\0'; str++) { - result = 5 * result + *str; + result = 5 * result + static_cast<size_t>(*str); } return result; } |