diff options
Diffstat (limited to 'src/common')
-rw-r--r-- | src/common/common_funcs.h | 2 | ||||
-rw-r--r-- | src/common/hash.h | 35 |
2 files changed, 1 insertions, 36 deletions
diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h index c029dc7b3..6dc3e108f 100644 --- a/src/common/common_funcs.h +++ b/src/common/common_funcs.h @@ -56,7 +56,7 @@ std::string GetLastErrorMsg(); namespace Common { constexpr u32 MakeMagic(char a, char b, char c, char d) { - return a | b << 8 | c << 16 | d << 24; + return u32(a) | u32(b) << 8 | u32(c) << 16 | u32(d) << 24; } } // namespace Common diff --git a/src/common/hash.h b/src/common/hash.h index ebd4125e2..b2538f3ea 100644 --- a/src/common/hash.h +++ b/src/common/hash.h @@ -35,41 +35,6 @@ static inline u64 ComputeStructHash64(const T& data) { return ComputeHash64(&data, sizeof(data)); } -/// A helper template that ensures the padding in a struct is initialized by memsetting to 0. -template <typename T> -struct HashableStruct { - // In addition to being trivially copyable, T must also have a trivial default constructor, - // because any member initialization would be overridden by memset - static_assert(std::is_trivial_v<T>, "Type passed to HashableStruct must be trivial"); - /* - * We use a union because "implicitly-defined copy/move constructor for a union X copies the - * object representation of X." and "implicitly-defined copy assignment operator for a union X - * copies the object representation (3.9) of X." = Bytewise copy instead of memberwise copy. - * This is important because the padding bytes are included in the hash and comparison between - * objects. - */ - union { - T state; - }; - - HashableStruct() { - // Memset structure to zero padding bits, so that they will be deterministic when hashing - std::memset(&state, 0, sizeof(T)); - } - - bool operator==(const HashableStruct<T>& o) const { - return std::memcmp(&state, &o.state, sizeof(T)) == 0; - }; - - bool operator!=(const HashableStruct<T>& o) const { - return !(*this == o); - }; - - std::size_t Hash() const { - return Common::ComputeStructHash64(state); - } -}; - struct PairHash { template <class T1, class T2> std::size_t operator()(const std::pair<T1, T2>& pair) const noexcept { |