bpo-33351: Correct struct packing in _tracemalloc.c #6761
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This is the first of several patches to add clang-cl compatibility to CPython. (Expect more in the coming days).
While it seems MSVC accepts pragma pack/push after the struct tag, clang-cl does not. AFAIK, pragma pack/push usually should go before the tag. This also adds the same packing to
pointer_t(which was packed on GCC but not MSVC) and fixed the comment for pointer_t.Also, I wasn't sure if a news entry was needed since this is a small internal patch and I couldn't find guidelines for when a news entry should be provided.
https://bugs.python.org/issue33351