Please send separate changes one by one (e.g. first patch would be for strsep alone and would include several functions of implementation __dfsw_strsep + __dfso_strsep + test code for this).

Hello! Thank you for the patch.

Copying maps from MSan LGTM.

Abandon due to D140744 being submitted.

Fix other line number.

Fix updated line numbers in test.

In D140690#4018043, @SixWeining wrote:

We notice that DFSan is a work in progress, currently under development for x86_64 Linux. So maybe we can defer the change until DFSan development is finished and there is a use case on loongarch64?

Who will use DFSan on loongarch64?

Test failures look unrelated, but rebasing might make it green again.

Fix formatting.

Switch large stack allocation to use malloc.

Increasing size and adding comment.

Fix const.

Rebase.

Fix formatting.

Add missing test file.

Added release notes and fixed variable naming.

Bump

Formatting.

In D126851#3556476, @kda wrote:

I am aware of this breakage: https://lab.llvm.org/buildbot/#/builders/77/builds/18273

I will push a fix shortly.

Remove auto used under clang/. Format.

More details on the bug: https://reviews.llvm.org/D125802#3551305

I was also looking into fixing this: https://reviews.llvm.org/D126944

It looks like the leak is rooted at the allocation here:
https://github.com/llvm/llvm-project/blob/1a155ee7de3b62a2fabee86fb470a1554fadc54d/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp#L3857

Going to push without review to repair this buildbot ASAP: https://lab.llvm.org/buildbot/#/builders/168

Add -f on the second checkout command.

I know this is currently used in at least one other place:
https://github.com/tensorflow/tensorflow/blob/dde12a690476650573a0ef3f8f681271a2016224/tensorflow/compiler/xla/service/cpu/compiler_functor.cc#L111

Rebase

Fix extra braces.

This re-land seems to have broken this buildbot: https://lab.llvm.org/buildbot/#/builders/169

Rebase

Rebase.

Rebase.