Mirrors/ankerl_unordered_dense
0
0
Fork 0
mirror of https://github.com/martinus/unordered_dense.git synced 2026-01-18 17:21:27 +01:00
Code Issues Packages Projects Releases Wiki Activity

Disable ubsan's integer sanitizer warnings

Browse Source 
They crop up on valid per the standard (but sometimes bogus) uses
of modular arithmetic on unsigned integers, such as in hash functions.
This commit is contained in:
Jean-Michaël Celerier
2025-07-02 23:22:10 -04:00
committed by Martin Leitner-Ankerl
parent f9bd51faca
commit b4802df020
1 changed files with 13 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
include/ankerl/unordered_dense.h
View File

@@ -70,6 +70,17 @@
# define ANKERL_UNORDERED_DENSE_NOINLINE __attribute__((noinline))
#endif
#if defined(__clang__) && defined(__has_attribute)
# if __has_attribute(__no_sanitize__)
# define ANKERL_UNORDERED_DENSE_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK \
__attribute__((__no_sanitize__("unsigned-integer-overflow")))
# endif
#endif
#if !defined(ANKERL_UNORDERED_DENSE_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK)
# define ANKERL_UNORDERED_DENSE_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK
#endif
// defined in unordered_dense.cpp
#if !defined(ANKERL_UNORDERED_DENSE_EXPORT)
# define ANKERL_UNORDERED_DENSE_EXPORT
@@ -351,7 +362,8 @@ struct tuple_hash_helper {
}
}
[[nodiscard]] static auto mix64(uint64_t state, uint64_t v) -> uint64_t {
[[nodiscard]] ANKERL_UNORDERED_DENSE_DISABLE_UBSAN_UNSIGNED_INTEGER_CHECK static auto mix64(uint64_t state, uint64_t v)
-> uint64_t {
return detail::wyhash::mix(state + v, uint64_t{0x9ddfea08eb382d69});
}