lit: Allow use of /dev/null in redirects on Windows (replace by a temporary
file).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85028 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/lit/TestRunner.py b/utils/lit/TestRunner.py
index 356632e..a2a9e36 100644
--- a/utils/lit/TestRunner.py
+++ b/utils/lit/TestRunner.py
@@ -15,6 +15,10 @@
# Don't use close_fds on Windows.
kUseCloseFDs = platform.system() != 'Windows'
+
+# Use temporary files to replace /dev/null on Windows.
+kAvoidDevNull = platform.system() == 'Windows'
+
def executeCommand(command, cwd=None, env=None):
p = subprocess.Popen(command, cwd=cwd,
stdin=subprocess.PIPE,
@@ -104,7 +108,10 @@
result = subprocess.PIPE
else:
if r[2] is None:
- r[2] = open(r[0], r[1])
+ if kAvoidDevNull and r[0] == '/dev/null':
+ r[2] = tempfile.TemporaryFile(mode=r[1])
+ else:
+ r[2] = open(r[0], r[1])
result = r[2]
final_redirects.append(result)