https://github.com/python/cpython/commit/0f23e84cda6a53a5db7a70f1e48f9773c335a9bd
commit: 0f23e84cda6a53a5db7a70f1e48f9773c335a9bd
branch: main
author: Victor Stinner <vstin...@python.org>
committer: vstinner <vstin...@python.org>
date: 2025-04-30T12:01:06+02:00
summary:
gh-130317: Skip test_pack_unpack_roundtrip_for_nans() on x86 (#133155)
Reduce also the number of iterations from 1000 to 10 to ease
debugging failures and prevent "command line too line" error when
tests are re-run.
files:
M Lib/test/test_capi/test_float.py
diff --git a/Lib/test/test_capi/test_float.py b/Lib/test/test_capi/test_float.py
index c857959d569529..44570bf6379565 100644
--- a/Lib/test/test_capi/test_float.py
+++ b/Lib/test/test_capi/test_float.py
@@ -180,10 +180,17 @@ def test_pack_unpack_roundtrip(self):
self.assertEqual(value2, value)
@unittest.skipUnless(HAVE_IEEE_754, "requires IEEE 754")
+ # Skip on x86 (32-bit), since these tests fail. The problem is that sNaN
+ # doubles become qNaN doubles just by the C calling convention, there is no
+ # way to preserve sNaN doubles between C function calls. But tests pass
+ # on Windows x86.
+ @unittest.skipIf((sys.maxsize == 2147483647) and not(sys.platform ==
'win32'),
+ 'test fails on x86 (32-bit)')
def test_pack_unpack_roundtrip_for_nans(self):
pack = _testcapi.float_pack
unpack = _testcapi.float_unpack
- for _ in range(1000):
+
+ for _ in range(10):
for size in (2, 4, 8):
sign = random.randint(0, 1)
signaling = random.randint(0, 1)
@@ -203,7 +210,7 @@ def test_pack_unpack_roundtrip_for_nans(self):
data1 = data if endian == BIG_ENDIAN else data[::-1]
value = unpack(data1, endian)
if signaling and sys.platform == 'win32':
- # On this platform sNaN becomes qNaN when returned
+ # On Windows x86, sNaN becomes qNaN when returned
# from function. That's a known bug, e.g.
#
https://developercommunity.visualstudio.com/t/155064
# (see also gh-130317).
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