Trying to build numpy (master) with python3.7 (ubuntu 16.02, python from git)
Compiling seems to work, but the tests give

ImportError: FOO/numpy/build/testenv/lib/python3.7/site-packages/numpy/core/multiarray.cpython-37dm-x86_64-linux-gnu.so: undefined symbol: PyTraceMalloc_Untrack

Who can help?