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-rw-r--r--src/mailman/bin/master.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/mailman/bin/master.py b/src/mailman/bin/master.py
index b0cae62ad..fa0ec0f16 100644
--- a/src/mailman/bin/master.py
+++ b/src/mailman/bin/master.py
@@ -372,9 +372,10 @@ class Loop:
# For the testing framework, if this environment variable is set, pass
# it on to the subprocess.
coverage_env = os.environ.get('COVERAGE_PROCESS_START')
+ env = dict()
if coverage_env is not None:
- env = dict(COVERAGE_PROCESS_START=coverage_env)
- args.append(env)
+ env['COVERAGE_PROCESS_START'] = coverage_env
+ args.append(env)
os.execle(*args)
# We should never get here.
raise RuntimeError('os.execle() failed')