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bpo-33873: regrtest: Add warning on -R 1:3 (GH-7736)
regrtest: Add warning when using less than 3 warmup runs like -R 1:3.
(cherry picked from commit cac4fef)
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pablogsal authored and vstinner committed Jun 26, 2018
commit 9e54695b4ef776299bec45a1e6db9e48dee1a126
7 changes: 7 additions & 0 deletions Lib/test/libregrtest/main.py
Original file line number Diff line number Diff line change
Expand Up @@ -462,6 +462,13 @@ def run_tests(self):
or self.tests or self.ns.args)):
self.display_header()

if self.ns.huntrleaks:
warmup, repetitions, _ = self.ns.huntrleaks
if warmup < 3:
msg = ("WARNING: Running tests with --huntrleaks/-R and less than "
"3 warmup repetitions can give false positives!")
print(msg, file=sys.stdout, flush=True)

if self.ns.randomize:
print("Using random seed", self.ns.random_seed)

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