https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65819
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #2 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
The LHS and the arrays on the RHS cannot possibly overlap,
because of the difference in the first index.
ig25@linux-fd1f:~/Krempel/Dep-f> cat foo.f90
program main
implicit none
real, dimension(3,3,3) :: f
integer :: three
call random_number(f)
three = 3
f(1, 1:three, :) = matmul(f(2,1:3,2:3), f(3,2:3,:))
print *,f
end program main
ig25@linux-fd1f:~/Krempel/Dep-f> gfortran -O -Warray-temporaries foo.f90
foo.f90:7:21:
f(1, 1:three, :) = matmul(f(2,1:3,2:3), f(3,2:3,:))
1
Warning: Creating array temporary at (1) [-Warray-temporaries]
