Possible patch for fortran/55086

[Steve Kargl]

On Wed, Oct 26, 2016 at 12:21:51PM -0700, Louis Krupp wrote:
> 
> The problem was that forall could handle substring expressions,
> but not if it had to create a temporary array.  I did my best
> to fix this.  I left a couple of TODO comments in the code.
> 
> Part of the issue is that forall doesn't usually create a temporary,
> so that code doesn't get as much test coverage as it probably should.
> I added an option (-fforce-forall-temp) to force forall to use a
> temporary, and I set that option in a couple of the test files.
> 
> I would not be surprised if there were a better way to do this.
> 
> When I tweak gfc_trans_forall_1() to force usage of a temporary
> for all assignments, all tests pass with the exception of forall_8.f90,
> and the whole point of that test is making sure that this particular
> forall *doesn't* use a temporary.
>   
> Louis Krupp
>  

I did not see anything in the patch that raised a
concern.  Give some time on Saturday to test the
patch and I'll get back to you with an OK (unless
another person wants to give an OK before then).

-- 
Steve