https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94329
Bug ID: 94329 Summary: gcc-9: error: use_only.f90: ‘-fcompare-debug’ failure (length) Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: debug Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: jakub at gcc dot gnu.org Target Milestone: --- Fails since GCC 4.9.0: $ cat use_only.f90 SUBROUTINE r_to_s1b ( s, hinv ) REAL hinv(:,:) DO I=1,3 DO J=1,3 S = hinv(i,j) END DO END DO END $ gcc -Werror -fcompare-debug -O1 -fno-tree-loop-optimize -fwrapv -c use_only.f90 gcc: error: use_only.f90: ‘-fcompare-debug’ failure (length)