pub_soft/abseil-cpp
3
0
Fork 0
mirror of https://github.com/abseil/abseil-cpp.git synced 2026-06-04 12:07:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

Relax static_assert on HashtableInlineDataImpl size.

Browse Source 
The previous equality check was too strict and fail on platforms where struct with two uint64_t bitfields has size 12, but alignment 8.

PiperOrigin-RevId: 907717466
Change-Id: I7a54ac029967284d4a74aa20d946cd408e2a1254
This commit is contained in:
Vitaly Goldshteyn
2026-04-29 12:19:42 -07:00
committed by Copybara-Service
parent 8ce456967c
commit bbed3b16f0
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
absl/container/internal/raw_hash_set.h
View File

@@ -739,9 +739,10 @@ class HashtableInlineDataImpl {
static_assert(
sizeof(HashtableInlineDataImpl<kCapacityByValue>::HashtableCapacity) ==
sizeof(size_t));
static_assert(sizeof(HashtableInlineDataImpl<kCapacityByValue>) ==
// NOTE: some platforms have uint64_t alignment equal to 4.
sizeof(std::pair<size_t, uint64_t>));
// NOTE: some platforms have this size to be equal to 12 for two reasons:
// 1) uint64_t alignment equal to 4.
// 2) struct with two uint64_t bitfields has size 12, but alignment 8.
static_assert(sizeof(HashtableInlineDataImpl<kCapacityByValue>) <= 16);
static_assert(
sizeof(HashtableInlineDataImpl<kCapacityByLog>::HashtableCapacity) == 1);
static_assert(sizeof(HashtableInlineDataImpl<kCapacityByLog>) == 8);