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v0.8.1
https://github.com/python/cpython
Revision dae5d728bc3f1d4039b64e4ec3a9036fd5d19587 authored by Miss Islington (bot) on 10 November 2020, 19:58:27 UTC, committed by GitHub on 10 November 2020, 19:58:27 UTC
Fix an assertion error in format() in debug build for floating point formatting with "n" format, zero padding and small width. Release build is not impacted. Patch by Karthikeyan Singaravelan. (cherry picked from commit 3f7983a25a3d19779283c707fbdd5bc91b1587ef) Co-authored-by: Xtreak <tir.karthi@gmail.com>
1 parent a63234c
Tip revision: dae5d728bc3f1d4039b64e4ec3a9036fd5d19587 authored by Miss Islington (bot) on 10 November 2020, 19:58:27 UTC
bpo-35560: Remove assertion from format(float, "n") (GH-11288) (GH-23231)
bpo-35560: Remove assertion from format(float, "n") (GH-11288) (GH-23231)
Tip revision: dae5d72
fork_wait.py
"""This test case provides support for checking forking and wait behavior.
To test different wait behavior, override the wait_impl method.
We want fork1() semantics -- only the forking thread survives in the
child after a fork().
On some systems (e.g. Solaris without posix threads) we find that all
active threads survive in the child after a fork(); this is an error.
"""
import os, sys, time, unittest
import test.support as support
threading = support.import_module('threading')
LONGSLEEP = 2
SHORTSLEEP = 0.5
NUM_THREADS = 4
class ForkWait(unittest.TestCase):
def setUp(self):
self._threading_key = support.threading_setup()
self.alive = {}
self.stop = 0
self.threads = []
def tearDown(self):
# Stop threads
self.stop = 1
for thread in self.threads:
thread.join()
thread = None
self.threads.clear()
support.threading_cleanup(*self._threading_key)
def f(self, id):
while not self.stop:
self.alive[id] = os.getpid()
try:
time.sleep(SHORTSLEEP)
except OSError:
pass
def wait_impl(self, cpid):
for i in range(10):
# waitpid() shouldn't hang, but some of the buildbots seem to hang
# in the forking tests. This is an attempt to fix the problem.
spid, status = os.waitpid(cpid, os.WNOHANG)
if spid == cpid:
break
time.sleep(2 * SHORTSLEEP)
self.assertEqual(spid, cpid)
self.assertEqual(status, 0, "cause = %d, exit = %d" % (status&0xff, status>>8))
def test_wait(self):
for i in range(NUM_THREADS):
thread = threading.Thread(target=self.f, args=(i,))
thread.start()
self.threads.append(thread)
# busy-loop to wait for threads
deadline = time.monotonic() + 10.0
while len(self.alive) < NUM_THREADS:
time.sleep(0.1)
if deadline < time.monotonic():
break
a = sorted(self.alive.keys())
self.assertEqual(a, list(range(NUM_THREADS)))
prefork_lives = self.alive.copy()
if sys.platform in ['unixware7']:
cpid = os.fork1()
else:
cpid = os.fork()
if cpid == 0:
# Child
time.sleep(LONGSLEEP)
n = 0
for key in self.alive:
if self.alive[key] != prefork_lives[key]:
n += 1
os._exit(n)
else:
# Parent
self.wait_impl(cpid)
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