cms-sw/cmssw — pull request #1187 by Dr15Jones (2013-10-25 18:25:31+00:00)
Title: Changed MagFields verbose::debugOut to constexpr to avoid threading problems

The thread-safey checker complains about the static verbose::debugOut.
Given that no code exists which changes the value after it is initialized
changing this to a constexpr has no functional effect. The default remains
the same 'false'. If one wants the debug output they have to edit the code
and recompile.