https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90237
Bug ID: 90237
Summary: Bogus warning from -Wdo-subscript
Product: gcc
Version: 8.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: townsend at astro dot wisc.edu
Target Milestone: ---
I'm encountering a bogus subscript-in-loop warning triggered by -Wdo-subscript
Example:
--
program do_subscript_bug
implicit none
real :: a(10)
integer :: i
a = 0.
do i = 1, 10
if (i > 1) then
print *, a(i-1)
endif
end do
end program do_subscript_bug
--
Compiling with -Wdo-subscript gives this error:
do_subscript_bug.f90:12:19:
do_subscript_bug.f90:10:14:
do i = 1, 10
2
do_subscript_bug.f90:12:19:
print *, a(i-1)
1
Warning: Array reference at (1) out of bounds (0 < 1) in loop beginning at (2)
[-Wdo-subscript]
cheers,
Rich
