[llvm-dev] No longer able to run lit tests within a sub-tool

[Zachary Turner via llvm-dev]

Looking, thanks for the report.

On Fri, Sep 22, 2017 at 11:22 AM Vedant Kumar <vsk at apple.com> wrote:

> As of r313998, this workflow no longer works:
>
>   cd <build-dir>
>   ./bin/llvm-lit <src>/llvm/tools/clang/test/CoverageMapping
>
> I get:
>
> llvm-lit: /Users/vk/src/llvm.org-coverage-braces/llvm/tools/clang/test/
> lit.cfg.py:97: note: using clang: '/Volumes/Builds/llvm.org
> -coverage-braces-RA/bin/clang'
> llvm-lit: /Users/vk/src/llvm.org-coverage-braces/llvm/utils/lit/lit/TestingConfig.py:101:
> fatal: unable to parse config file '/Users/vk/src/llvm.org
> -coverage-braces/llvm/tools/clang/test/lit.cfg.py', traceback: Traceback
> (most recent call last):
>   File "/Users/vk/src/llvm.org-coverage-braces/llvm/utils/lit/lit/TestingConfig.py",
> line 88, in load_from_path
>     exec(compile(data, path, 'exec'), cfg_globals, None)
>   File "/Users/vk/src/llvm.org-coverage-braces/llvm/tools/clang/test/
> lit.cfg.py", line 128, in <module>
>     config.substitutions.append( ('%clang_func_map', ' ' +
> lit.util.which('clang-func-mapping', config.environment['PATH']) + ' ') )
> TypeError: cannot concatenate 'str' and 'NoneType' objects
>
> However, this still works when running tests within llvm:
>
>   ./bin/llvm-lit <src>/llvm/test/tools/llvm-cov
>
> I'd appreciate any help in getting this working again.
>
> thanks,
> vedant
>
>
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