8000 BUG: reference count leak in bincount, fixes #6805 by jaimefrio · Pull Request #7445 · numpy/numpy · GitHub
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BUG: reference count leak in bincount, fixes #6805 #7445

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merged 2 commits into from
Mar 22, 2016
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BUG: reference count leak in bincount, fixes #6805 #7445

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64af96c
TST: check reference counts of dtypes after calling bincount
jaimefrio Dec 10, 2015
94a47c5
BUG: reference count leak in bincount, fixes #6805
jaimefrio Dec 10, 2015
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TST: check reference counts of dtypes after calling bincount
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@jaimefrio
jaimefrio committed Mar 21, 2016
commit 64af96cdfce408821bda3b5d1896ad0e6d6caee9
23 changes: 19 additions & 4 deletions numpy/lib/tests/test_function_base.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1403,7 +1403,7 @@ def test_finite_range(self):
histogram(vals, range=[0.25,0.75])
assert_raises(ValueError, histogram, vals, range=[np.nan,0.75])
assert_raises(ValueError, histogram, vals, range=[0.25,np.inf])


class TestHistogramOptimBinNums(TestCase):
"""
Expand All @@ -1428,7 +1428,7 @@ def test_simple(self):
"""
# Some basic sanity checking, with some fixed data.
# Checking for the correct number of bins
basic_test = {50: {'fd': 4, 'scott': 4, 'rice': 8, 'sturges': 7,
basic_test = {50: {'fd': 4, 'scott': 4, 'rice': 8, 'sturges': 7,
'doane': 8, 'sqrt': 8, 'auto': 7},
500: {'fd': 8, 'scott': 8, 'rice': 16, 'sturges': 10,
'doane': 12, 'sqrt': 23, 'auto': 10},
Expand Down Expand Up @@ -1674,9 +1674,9 @@ def test_rightmost_binedge(self):
def test_finite_range(self):
vals = np.random.random((100, 3))
histogramdd(vals, range=[[0.0, 1.0], [0.25, 0.75], [0.25, 0.5]])
assert_raises(ValueError, histogramdd, vals,
assert_raises(ValueError, histogramdd, vals,
range=[[0.0, 1.0], [0.25, 0.75], [0.25, np.inf]])
assert_raises(ValueError, histogramdd, vals,
assert_raises(ValueError, histogramdd, vals,
range=[[0.0, 1.0], [np.nan, 0.75], [0.25, 0.5]])


Expand Down Expand Up @@ -2150,6 +2150,21 @@ def test_with_incorrect_minlength(self):
"minlength must be positive",
lambda: np.bincount(x, minlength=0))

def test_dtype_reference_leaks(self):
# gh-6805
intp_refcount = sys.getrefcount(np.dtype(np.intp))
double_refcount = sys.getrefcount(np.dtype(np.double))

for j in range(10):
np.bincount([1, 2, 3])
assert_equal(sys.getrefcount(np.dtype(np.intp)), intp_refcount)
assert_equal(sys.getrefcount(np.dtype(np.double)), double_refcount)

for j in range(10):
np.bincount([1, 2, 3], [4, 5, 6])
assert_equal(sys.getrefcount(np.dtype(np.intp)), intp_refcount)
assert_equal(sys.getrefcount(np.dtype(np.double)), double_refcount)


class TestInterp(TestCase):

Expand Down
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