dkaszews wrote:
I am having trouble running tests. I run them as:
```shell
$ PATH="$HOME/code/llvm-project/build/bin:$PATH" \
./check_clang_tidy.py \
checkers/readability/identifier-naming-default-lower.cpp \
readability-identifier-naming \
/tmp/test -std=c++17
```
The `-std=c++17` part is just to shorten the output.
I would expect the test to fail, but it just produces empty output:
```txt
Running ['clang-tidy', '--experimental-custom-checks', '/tmp/test.cpp', '-fix',
'--checks=-*,readability-identifier-naming', '--config={}', '--', '-std=c++17',
'-nostdinc++']...
------------------------ clang-tidy output -----------------------
------------------------------------------------------------------
------------------------------ Fixes -----------------------------
------------------------------------------------------------------
```
That `--config={}` is suspicious to me, since my test file does start with the
following:
```cpp
// RUN: %check_clang_tidy %s readability-identifier-naming %t -- \
// RUN: -config='{CheckOptions: { \
// RUN: readability-identifier-naming.DefaultCase: "lower_case" }}'
```
If I try running any other tests such as `identifier-naming-empty-options.cpp`,
then I can also see the empty config and the test actually fails (mine doesn't
only because I didn't yet add any checks).
Is the `check_clang_tidy` broken on the main branch? My local base is:
```shell
54b4bd510a8c 2025-12-10 15:32:27 +0000 Tom Eccles [upstream/main,
upstream/HEAD, main]
[flang][AliasAnalysis] Cray pointers/pointees might alias with anything
(#170900)
```
https://github.com/llvm/llvm-project/pull/171686
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