[PATCH] D74409: [debuginfo-tests][Dexter] Fix process creation flake-out on Windows

Wed Feb 12 11:10:32 PST 2020

rnk added a comment.

In D74409#1872084 <https://reviews.llvm.org/D74409#1872084>, @TWeaver wrote:

> The windows debug info tests are built with clang and debugged using dbgeng atm, so there shouldn't be any overlap with visual studio at all.
>
> I'd be very interested to see what the issue is.

There are my check-debuginfo logs:
https://reviews.llvm.org/P8194

I think the VS dependence is here:
https://github.com/llvm/llvm-project/blob/master/debuginfo-tests/dexter/dex/builder/scripts/windows/clang-cl_vs2015.bat#L4

  call "%VS140COMNTOOLS%..\..\VC\bin\amd64\vcvars64.bat"

This would set up the environment so that clang-cl can find MSVC headers and libraries. For me, VS140COMNTOOLS is not set, and the later errors are probably a downstream consequence of that. I launched a new "developer command prompt" for VS 2019 and it also lacks that env var, so I'm not sure it can be relied on.

Hopefully that helps.

Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D74409