Some tests fail under Clang in when BUILD_TYPE=Release

[avalenzu]

Executing the following

export CC=path/to/clang
export CXX=path/to/clang++
mkdir build
cd build
cmake BUILD_TYPE=Release ..
make
ctest

Yields

91% tests passed, 2 tests failed out of 22

Total Test time (real) =  46.23 sec

The following tests FAILED:
          9 - test_fcl_collision (Failed)
         13 - test_fcl_geometric_shapes (Failed)

These appear to be due to a strange interaction between Clang and Eigen inside box_box-inl.h. The result is false negatives in box-box intersection tests (missed contacts). I'm investigating possible solutions. I notice that the Travis CI tests clang in Debug mode, but not in Release. Could we consider adding that?

[jslee02]

I notice that the Travis CI tests clang in Debug mode, but not in Release. Could we consider adding that?

I believe we test clang builds in Release mode as well. Hm, am I missing something here?

[avalenzu]

No, I just missed that. Maybe it's a difference in clang versions? The test results I posted were with 3.9. I'm not sure what Travis uses.

On Jun 15, 2017 4:22 PM, "Jeongseok Lee" notifications@github.com wrote:

I notice that the Travis CI tests clang in Debug mode, but not in Release. Could we consider adding that?

I believe we test clang builds in Release mode as well https://github.com/flexible-collision-library/fcl/blob/master/.travis.yml#L21. Hm, am I missing something here?

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[jslee02]

FYI, Travis uses 3.5.0.