Found the following significant warnings:
  firebehaviour.cpp:281:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  firebehaviour.cpp:392:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:200:36: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:252:36: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:264:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:275:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:550:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:679:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:729:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:782:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  forestutils.cpp:1196:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  fuelstructure.cpp:177:9: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  fuelstructure.cpp:178:9: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  growth.cpp:1791:8: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  growth.cpp:1945:8: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  hydraulics.cpp:2162:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  hydrology.cpp:195:10: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  modelInput.cpp:646:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  modelInput.cpp:682:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  modelInput.cpp:686:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  modelInput.cpp:787:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  modelInput.cpp:792:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:107:15: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:121:15: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:142:15: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:220:17: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:251:17: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:282:17: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:657:12: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:659:19: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:659:47: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:754:12: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:754:40: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:756:19: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:756:80: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:756:20: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:819:10: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:955:10: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1217:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1218:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1219:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1220:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1221:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1222:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  paramutils.cpp:1223:13: warning: use of bitwise '|' with boolean operands [-Wbitwise-instead-of-logical]
  phenology.cpp:9:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  phenology.cpp:110:12: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  transpiration.cpp:335:8: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  transpiration.cpp:469:10: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  transpiration.cpp:470:10: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  transpiration.cpp:471:10: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/medfate.Rcheck/00install.out' for details.