[llvm] [llvm lib] Read/write non-power-of-two sized unsigned integers (3, 5, 6, 7 bytes) in DataExtractor and FileWriter (PR #189098)

[Ulrich Weigand via llvm-commits]

uweigand wrote:

This also broke the s390x build bot: https://lab.llvm.org/buildbot/#/builders/42/builds/8421

Looks like endian issues ...

https://github.com/llvm/llvm-project/pull/189098