[patch, fortran] Fix PR 66385, array constructors in FORALL

[Thomas Koenig]

Hello world,

front-end optimization and FORALL do not appear to mix well.

This patch fixes an ICE resulting from an attempt by front-end
optimization to use a BLOCK inside a FORALL statement.

I will commit this as obvious in a day or so unless somebody objects.
I will also backport (time to install the gcc 5 branch...)

There would be an alternative, in principle, to put the BLOCK around
the FORALL, but frankly, I don't think it is worth spending the
effort and complicating the code.

Regards

	Thomas

2015-06-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/66385
	* frontend-passes.c (combine_array_constructor): Return early if
	inside a FORALL loop.

2015-06-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/66385
	* gfortran.dg/forall_17.f90:  New test.

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