What were you trying to do that didn't work?

I am trying to compile .NET on s390x on RHEL 8.10. It compiles successfully but a bunch of unit tests crash when executed. Someone tracked it down to clang 17 miscompiling the bundled zlib-ng in .NET. They also tracked down the fix to a one-line change: https://reviews.llvm.org/D156972

$ git log --grep 'Fix crash in replaceStoreOfInsertLoad'
commit 98ccc70b93a39a7ea3e26f7f5b5fe40d39b5a7e5
Author: pvanhout <pierre.vanhoutryve@amd.com>
Date:   Thu Aug 3 10:53:08 2023 +0200
    [DAG] Fix crash in replaceStoreOfInsertLoad
    Idx's type can be different from Ptr's, causing a "Binary operator types must match" assertion failure when emitting the MUL.
    Reviewed By: arsenm
    Differential Revision: https://reviews.llvm.org/D156972

Please provide the package NVR for which bug is seen:

clang-17.0.6-1.module+el8.10.0+20808+e12784c0.s390x

How reproducible:

100% of the time

Steps to reproduce

1. Build .NET on s390x, then run its unit tests

Expected results

Tests pass

Actual results

Compression related tests cause .NET to crash