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-rwxr-xr-xutils/lit/lit/main.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/utils/lit/lit/main.py b/utils/lit/lit/main.py
index 44042a34a5..9754f2f923 100755
--- a/utils/lit/lit/main.py
+++ b/utils/lit/lit/main.py
@@ -111,7 +111,8 @@ def write_test_results(run, lit_config, testing_time, output_path):
def main(builtinParameters = {}):
# Use processes by default on Unix platforms.
isWindows = platform.system() == 'Windows'
- useProcessesIsDefault = (not isWindows) and platform.system() != 'OpenBSD'
+ # multiprocessing is broken on various BSD Python versions: http://bugs.python.org/issue3770
+ useProcessesIsDefault = (not isWindows) and ('BSD' not in platform.system())
global options
from optparse import OptionParser, OptionGroup