[clang][lit] mkdir before mkstemp in is_filesystem_case_insensitive()

[aeubanks]

In the CMake build test_exec_root already exists here, but not in the gn build, which causes this to fail.

[llvmbot]

@llvm/pr-subscribers-clang

Author: Arthur Eubanks (aeubanks)

Changes

In the CMake build test_exec_root already exists here, but not in the gn build, which causes this to fail.

---

Full diff: https://github.com/llvm/llvm-project/pull/131036.diff

1 Files Affected:

• (modified) clang/test/lit.cfg.py (+1)

diff --git a/clang/test/lit.cfg.py b/clang/test/lit.cfg.py
index 9820ddd1f14af..074167fa6cad3 100644
--- a/clang/test/lit.cfg.py
+++ b/clang/test/lit.cfg.py
@@ -253,6 +253,7 @@ def have_host_clang_repl_cuda():
 
 
 def is_filesystem_case_insensitive():
+    os.mkdir(config.test_exec_root)
     handle, path = tempfile.mkstemp(prefix="case-test", dir=config.test_exec_root)
     isInsensitive = os.path.exists(
         os.path.join(os.path.dirname(path), os.path.basename(path).upper())

[zmodem]

lgtm