[clang] [clang] Add a timeout to avoid a hang when errors cause a subprocess to stall (PR #217814)

[Chandler Carruth via cfe-commits]

https://github.com/chandlerc created https://github.com/llvm/llvm-project/pull/217814


Assisted-by: Antigravity with Gemini

>From c496772db1d5d45f0171ef5b821bc16a610e3bdf Mon Sep 17 00:00:00 2001
From: Chandler Carruth <chandlerc at gmail.com>
Date: Fri, 21 Aug 2026 01:53:19 +0000
Subject: [PATCH] [clang] Add a timeout to avoid a hang when errors cause a
 subprocess to stall

Assisted-by: Antigravity with Gemini
---
 clang/test/lit.cfg.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/clang/test/lit.cfg.py b/clang/test/lit.cfg.py
index f7ac5d6d6676e..9b7bd1d329d22 100644
--- a/clang/test/lit.cfg.py
+++ b/clang/test/lit.cfg.py
@@ -160,8 +160,9 @@ def have_host_out_of_process_jit_feature_support():
             stdout=subprocess.PIPE,
             stderr=subprocess.PIPE,
             input=testcode,
+            timeout=5,
         )
-    except OSError:
+    except (OSError, subprocess.TimeoutExpired):
         return False
 
     if clang_repl_cmd.returncode == 0: