STINNER Victor <[email protected]> added the comment:
> test_list leaked [3] memory blocks, sum=3
Memory block leaks are very different from reference leaks. Memory block are
low level allocations. Python has *many* internal caches: tuple uses an
internal "free list" for example. The first runs of the tests (2 runs when
using -R 2:3) is used to warmup these caches.
Maybe regrtest -R should raise an error, or at least emit a big warning when
using -R with less than 3 warmup runs.
By the way, regrtest has a very old bug: -R 3:3 runs the test 7 times, not 6
times. See runtest_inner() in Lib/test/libregrtest/runtest.py:
test_runner()
if ns.huntrleaks:
refleak = dash_R(the_module, test, test_runner, ns.huntrleaks)
The code should be:
if ns.huntrleaks:
refleak = dash_R(the_module, test, test_runner, ns.huntrleaks)
else:
test_runner()
Do you want to write a PR for that? I should make our Refleaks buildbots 1/7
faster ;-)
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<https://bugs.python.org/issue33873>
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