MODFLOW-USGS / mt3d-usgs

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Increase level of warnings, fix some possible uninitialized values #49

Closed mwtoews closed 5 years ago

mwtoews commented 5 years ago

The "gold standard" of warnings is to turn most of them on with -Wall (or -warn all for Intel). While this PR doesn't exactly do this, it does add most of them... and then turns off other warnings that may require more attention later (if any) using -Wno-...

Also, fflags now configured for breaking change from https://github.com/modflowpy/pymake/pull/28

Some manual work with gfortran -O2 -Wmaybe-uninitialized was done to try and resolve some potential uninitialized values for mt3dms and mt3d-usgs. Note that none of these are confirmed as bugs. However, not all of these warnings were resolved due to possible false positive GCC bugs (maybe), so -Wno-maybe-uninitialized is used to disable this warning for now. Also, this flag didn't help discover #46 so there are possibly other variables lurking that would require other tools (e.g. Intel or Valgrind) to identify.