llvm-project

3b8bb272 - [libc++] Use a union for uninitialized storage in associative container benchmarks (#227068)

[libc++] Use a union for uninitialized storage in associative container benchmarks (#227068) This removes the need for reinterpret_cast when accessing the containers constructed in the scratch space, and fixes the PMR constructor benchmark passing the wrong pointer to DoNotOptimize.