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bpo-31217: Fix regrtest -R for small integer #3258

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bpo-31217: Fix regrtest -R for small integer #3258

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13 changes: 10 additions & 3 deletions Lib/test/libregrtest/refleak.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,13 @@
from test import support


def maybe_small_long(x):
# bpo-31217: On CPython, x_sub() of longobject.c doesn't try to use int
# singletons. Try to get singletons to prevent false alarms on memory block
# leaks.
return int(str(x))
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Rather than rely on small int singletons, I think an explicit pool would be less implementation-dependent.



def dash_R(the_module, test, indirect_test, huntrleaks):
"""Run a test multiple times, looking for reference leaks.

Expand Down Expand Up @@ -56,9 +63,9 @@ def dash_R(the_module, test, indirect_test, huntrleaks):
abcs)
print('.', end='', file=sys.stderr, flush=True)
if i >= nwarmup:
rc_deltas[i] = rc_after - rc_before
alloc_deltas[i] = alloc_after - alloc_before
fd_deltas[i] = fd_after - fd_before
rc_deltas[i] = maybe_small_long(rc_after - rc_before)
alloc_deltas[i] = maybe_small_long(alloc_after - alloc_before)
fd_deltas[i] = maybe_small_long(fd_after - fd_before)
alloc_before = alloc_after
rc_before = rc_after
fd_before = fd_after
Expand Down