https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83650
Bug ID: 83650
Summary: [7/8 Regression] Wrong simplification in cshift with
negative shifts
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: tkoenig at gcc dot gnu.org
Target Milestone: ---
Discovered investigating a "failure" in my current work on the
cshift patch:
program main
integer, dimension(5), parameter :: b = [1,2,3,4,5]
integer, dimension(5) :: a = [1,2,3,4,5]
print *,cshift(a, -4)
print *,cshift(b, -4)
end program main
yields:
2 3 4 5 1
1 2 3 4 5
The first result (run-time) is correct.
I will fix this with my upcoming 8 patch for cshift, but it
will still be necessary to correct this on the previous branches.
Should be rather easy.
