https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65819
kargl at gcc dot gnu.org changed:
What |Removed |Added
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CC| |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to Thomas Koenig from comment #2)
> 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]
Is this PR still a problem? I get no warnings with
% gfcx -o z -Wall -Wsurprising -Wextra a.f90
