Fix range-loop-construct warnings.

BlueBrain / Brion

Blue Brain C++ File IO Library

GNU Lesser General Public License v3.0

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Closed matz-e closed 2 years ago

matz-e commented 2 years ago

Complaints about implicit copying that can be avoided with references. The current code will fail to compile with gcc@11: due to -Werror.

NadirRoGue commented 2 years ago

Removed ubuntu16 from CI

retest this please