diff options
Diffstat (limited to 'libstdc++-v3/include/bits/functional_hash.h')
| -rw-r--r-- | libstdc++-v3/include/bits/functional_hash.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/libstdc++-v3/include/bits/functional_hash.h b/libstdc++-v3/include/bits/functional_hash.h index 022c5caf4cc..d5658fe4c50 100644 --- a/libstdc++-v3/include/bits/functional_hash.h +++ b/libstdc++-v3/include/bits/functional_hash.h @@ -59,5 +59,21 @@ # undef _GLIBCXX_INCLUDE_AS_CXX0X #endif +#include <system_error> + +namespace std +{ + template<> + struct hash<error_code> : public unary_function<error_code, size_t> + { + size_t + operator()(error_code __e) const + { + const char* __p = reinterpret_cast<const char*>(&__e); + return _Fnv_hash<>::hash(__p, sizeof(__e)); + } + }; +} + #endif // _FUNCTIONAL_HASH_H |
