[NumPy-Tickets] [NumPy] #1987: polyfit and basic arithmetic function errors with clang on Mac OS X Lion

[NumPy Trac]

#1987: polyfit and basic arithmetic function errors with clang on Mac OS X Lion
--------------------+-------------------------------------------------------
 Reporter:  deil    |       Owner:  somebody   
     Type:  defect  |      Status:  new        
 Priority:  normal  |   Milestone:  Unscheduled
Component:  Other   |     Version:  devel      
 Keywords:          |  
--------------------+-------------------------------------------------------
 I get two test failures of 2.0.0.dev-7f302cc with clang.

 Furthermore I get a MismatchCAPIWarning when building numpy, which results
 in a {{{"Using deprecated NumPy API"}}} when building scipy.

 The full build and test logs are attached.

 See http://mail.scipy.org/pipermail/scipy-user/2011-November/031042.html

 System info:
 {{{
 Mac OS X Lion 10.7.2 (11C74)
 XCode 4.2.1 (4D502)

 $ which python; python
 /opt/local/bin/python
 Python 2.7.2 (default, Nov 23 2011, 11:40:08)
 [GCC 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2335.15.00)] on
 darwin

 $ which clang; clang --version
 /usr/bin/clang
 Apple clang version 3.0 (tags/Apple/clang-211.12) (based on LLVM 3.0svn)
 Target: x86_64-apple-darwin11.2.0

 $ which gfortran; gfortran --version
 /opt/local/bin/gfortran
 GNU Fortran (GCC) 4.4.6
 }}}

 Test warning and failures:
 {{{
 /Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/ma/core.py:4778: RuntimeWarning: invalid value encountered
 in power
   np.power(out, 0.5, out=out, casting='unsafe')
 ======================================================================
 FAIL: Test basic arithmetic function errors
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/core/tests/test_numeric.py", line 319, in
 test_floating_exceptions
     lambda a,b:a*b, ft_tiny, ft_tiny)
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/core/tests/test_numeric.py", line 270, in assert_raises_fpe
     "Type %s did not raise fpe error '%s'." % (ftype, fpeerr))
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/testing/utils.py", line 34, in assert_
     raise AssertionError(msg)
 AssertionError: Type <type 'numpy.complex64'> did not raise fpe error ''.

 ======================================================================
 FAIL: Tests polyfit
 ----------------------------------------------------------------------
 Traceback (most recent call last):
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/ma/tests/test_extras.py", line 622, in test_polyfit
     assert_almost_equal(a, a_)
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/ma/testutils.py", line 155, in assert_almost_equal
     err_msg=err_msg, verbose=verbose)
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/ma/testutils.py", line 221, in assert_array_almost_equal
     header='Arrays are not almost equal')
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/ma/testutils.py", line 186, in assert_array_compare
     verbose=verbose, header=header)
   File "/Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/testing/utils.py", line 677, in assert_array_compare
     raise AssertionError(msg)
 AssertionError:
 Arrays are not almost equal

 (mismatch 100.0%)
  x: array([ 4.25134878,  1.14131297,  0.20519666,  0.01701   ])
  y: array([ 1.9345248 ,  0.49711011,  0.10202554,  0.00928034])
 }}}

 MismatchCAPIWarning in numpy build:
 {{{
 numpy/core/setup_common.py:86: MismatchCAPIWarning: API mismatch detected,
 the C API version numbers have to be updated. Current C api version is 6,
 with checksum eb54c77ff4149bab310324cd7c0cb176, but recorded checksum for
 C API version 6 in codegen_dir/cversions.txt is
 e61d5dc51fa1c6459328266e215d6987. If functions were added in the C API,
 you have to update C_API_VERSION  in numpy/core/setup_common.py.
   MismatchCAPIWarning)
 }}}

 Warning in scipy build:
 {{{
 /Users/deil/Library/Python/2.7/lib/python/site-
 packages/numpy/core/include/numpy/npy_deprecated_api.h:11:2: warning:
 #warning "Using deprecated NumPy API, disable it by #defining
 NPY_NO_DEPRECATED_API" [-W#warnings]
 }}}

 I also see this C API Warning on a Linux machine. Is this a bug in numpy
 or an installation problem on my side? Does it have any consequences on
 numpy / scipy working properly?

 The polyfit failure apparently is known, on the mailing list Charles
 Harris wrote:
 "Don't worry about this one, it comes from Travis changing the unmasked
 version of polyfit which changes the singular values, etc."

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1987>
NumPy <http://projects.scipy.org/numpy>
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