run-clang-tidy.py: don't fail when running without -checks=.
llvm-svn: 218227
diff --git a/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py b/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
index 28aae27..f383160 100755
--- a/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
+++ b/clang-tools-extra/clang-tidy/tool/run-clang-tidy.py
@@ -131,8 +131,11 @@
args = parser.parse_args()
try:
- print subprocess.check_output([args.clang_tidy_binary, '-list-checks',
- '-checks='+args.checks, 'dummy'])
+ invocation = [args.clang_tidy_binary, '-list-checks']
+ if args.checks:
+ invocation.append('-checks='+args.checks)
+ invocation.append('-')
+ print subprocess.check_output(invocation)
except:
print >>sys.stderr, "Unable to run clang-tidy."
sys.exit(1)