New submission from Jan Engelhardt <[email protected]>:
When python is compiled with sparc64 settings (i.e. -m64), test_ctypes fails. I
am not sure why this does not show up with -m32.
ares:/usr/src/packages/BUILD/Python-2.6.5>
LD_LIBRARY_PATH=/usr/src/packages/BUILD/Python-2.6.5 ./python -E -tt
./Lib/test/regrtest.py -s test_ctypes
test_ctypes
test test_ctypes failed -- Traceback (most recent call last):
File
"/usr/src/packages/BUILD/Python-2.6.5/Lib/ctypes/test/test_callbacks.py", line
81, in test_longdouble
self.check_type(c_longdouble, 3.14)
File
"/usr/src/packages/BUILD/Python-2.6.5/Lib/ctypes/test/test_callbacks.py", line
30, in check_type
self.failUnlessEqual(self.got_args, (-3, arg))
AssertionError: (-3, 0.0) != (-3, 3.1400000000000001)
When using "long double x = 3.14", the constant 3.14 is taken as a double,
which is then converted to long double. Of course it isn't accurate. There must
be something in python that doesn't generate this correctly; it should have
been "long double x = 3.14L", since only the constant 3.14L expands to the full
longdouble pi.
----------
components: Tests
messages: 109107
nosy: jengelh
priority: normal
severity: normal
status: open
title: test_ctypes: fails on sparc64 long double
type: behavior
versions: Python 2.6
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<http://bugs.python.org/issue9143>
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