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test_faulthandler: skip test_read_null() on AIX

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AIX maps the first page of memory at address zero as valid, read-only.  Reading
NULL is not a fault on AIX. This is utilized by IBM compiler optimizations.
One speculatively can indirect through a pointer which may be null without
first testing if null and defer the test before using the value.
This commit is contained in:
Victor Stinner 2013-07-03 22:29:42 +02:00
parent f4c47b5a35
commit 330426cfe2
1 changed files with 2 additions and 0 deletions
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2
Lib/test/test_faulthandler.py
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@ -107,6 +107,8 @@ class FaultHandlerTests(unittest.TestCase):
self.assertRegex(output, regex)
self.assertNotEqual(exitcode, 0)
@unittest.skipIf(sys.platform.startswith('aix'),
"the first page of memory is a mapped read-only on AIX")
def test_read_null(self):
self.check_fatal_error("""
import faulthandler