https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125802
Bug ID: 125802
Summary: False positive for [-Wunused-but-set-variable=]
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: manfred99 at gmx dot ch
Target Milestone: ---
cat > unused2.f <<EOF
program unused2
integer i,j,arr(4)
arr=22
i=1
DO j=1,4
IF (j.GT.2) EXIT
i=j
ENDDO
arr(i)=33
print*,arr
end
EOF
#> /usr/local/gfortran-17/bin/gfortran -Wall -W unused2.f -o unused2
unused2.f:9:10:
9 | i=j
| 1
Warning: Variable 'i' defined at (1) but never used
[-Wunused-but-set-variable=]
This is with
#> /usr/local/gfortran-17/bin/gfortran --version
GNU Fortran (GCC) 17.0.0 20260614 (experimental)
Copyright (C) 2026 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
