While compiling gfortran (specifically libgfortran) for x86_64-pc-mingw32 as host and target, I get the following warnings for unused variables: ../../../build/gcc-svn/gcc/libgfortran/intrinsics/time_1.h: In function '__time_1': ../../../build/gcc-svn/gcc/libgfortran/intrinsics/time_1.h:90: warning: unused variable 'total_time' Can these be removed?