bpo-31018: Switch to #pragma pack from __declspec(align) in _tracemalloc by segevfiner · Pull Request #2848 · python/cpython (original) (raw)

..\Modules\_tracemalloc.c(88): warning C4359: '<unnamed-tag>': Alignment specifier is less than actual alignment (8), and will be ignored.

The _tracemalloc frame_t packing optimization is not working in Windows x64.

For this to actually work we simply need to use #pragma pack instead.

https://bugs.python.org/issue31018