Strictly speaking, we're in the#else of#ifndef MS_WINDOWS here and we most probably should indent, but I wanted to keep the diff small.

Fix clang-cl warning:

the current #pragma pack alignment value is modified in the included file [-Wpragma-pack]

This will silence 16 occurrences inhttps://github.com/python/cpython/actions/runs/14044831663/job/39366560293?pr=131690#step:4:60.

Actually,pshpack1.h takes care of this warning

#if ! (defined(lint)|| defined(RC_INVOKED))#if (_MSC_VER >=800&& !defined(_M_I86))|| defined(_PUSHPOP_SUPPORTED)#pragma warning(disable:4103)#if !(defined(MIDL_PASS ))|| defined(__midl )#pragma pack(push,1)#else#pragma pack(1)#endif#else#pragma pack(1)#endif#endif/* ! (defined(lint) || defined(RC_INVOKED)) */

using#pragma warning(disable:4103), but clang-cl only supportsdisable for some warnings so far (and doesn't supportsuppress for those few supported, see also#131821 (comment)).

A different approach would be, to entirely get rid ofpshpack1.h, since we are in theMS_WINDOWS code path here. We could do a simple#pragma pack(push,1), which clang-cl understands and neither MSVC nor clang-cl would warn about, but

• I wanted to do the minimal needed stuff to silence clang ...
• ... without having to care about other compilers (mingw, etc), which might then be broken (seeAn include file is needed because various compilers do this in different ways inpshpack1.h)

Must be done afterpoppack.h, because there the previous packing is restored and we'd get the same[-Wpragma-pack] warning.