[llvm] [lit] [test] Fix the shtest-readfile test on Python 3.13 on Windows (PR #160503)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-testing-tools

Author: Martin Storsjö (mstorsjo)

<details>
<summary>Changes</summary>

Python 3.13 considers "/file/does/not/exist" to not be an absolute path on Windows, so the test runner does os.path.join(cwd, filePath), which can end up with an output path such as "D:/file/does/not/exist".

Accept a potential prefix before the missing path here.

This fixes running the lit tests on Windows with Python 3.13.

---
Full diff: https://github.com/llvm/llvm-project/pull/160503.diff


1 Files Affected:

- (modified) llvm/utils/lit/tests/shtest-readfile.py (+1-1) 


``````````diff
diff --git a/llvm/utils/lit/tests/shtest-readfile.py b/llvm/utils/lit/tests/shtest-readfile.py
index a122dd7664272..f2e4fb0a9e169 100644
--- a/llvm/utils/lit/tests/shtest-readfile.py
+++ b/llvm/utils/lit/tests/shtest-readfile.py
@@ -10,7 +10,7 @@
 
 # CHECK-LABEL: FAIL: shtest-readfile :: file-does-not-exist.txt ({{[^)]*}})
 # CHECK: # executed command: @echo 'echo %{readfile:/file/does/not/exist}'
-# CHECK: # | File specified in readfile substitution does not exist: /file/does/not/exist
+# CHECK: # | File specified in readfile substitution does not exist: {{.*}}/file/does/not/exist
 
 # CHECK-LABEL: FAIL: shtest-readfile :: relative-paths.txt ({{[^)]*}})
 # CHECK: echo hello

``````````

</details>


https://github.com/llvm/llvm-project/pull/160503