diff options
Diffstat (limited to 'libstdc++-v3/libsupc++/hash_bytes.cc')
| -rw-r--r-- | libstdc++-v3/libsupc++/hash_bytes.cc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libstdc++-v3/libsupc++/hash_bytes.cc b/libstdc++-v3/libsupc++/hash_bytes.cc index 1042de66388a..7d76c34edb40 100644 --- a/libstdc++-v3/libsupc++/hash_bytes.cc +++ b/libstdc++-v3/libsupc++/hash_bytes.cc @@ -112,6 +112,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } // Implementation of FNV hash for 32-bit size_t. + // N.B. This function should work on unsigned char, otherwise it does not + // correctly implement the FNV-1a algorithm (see PR59406). + // The existing behaviour is retained for backwards compatibility. size_t _Fnv_hash_bytes(const void* ptr, size_t len, size_t hash) { @@ -157,6 +160,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } // Implementation of FNV hash for 64-bit size_t. + // N.B. This function should work on unsigned char, otherwise it does not + // correctly implement the FNV-1a algorithm (see PR59406). + // The existing behaviour is retained for backwards compatibility. size_t _Fnv_hash_bytes(const void* ptr, size_t len, size_t hash) { |