re PR fortran/91726 (ICE in gfc_conv_array_ref, at fortran/trans-array.c:3612)

re PR fortran/91726 (ICE in gfc_conv_array_ref, at fortran/trans-array.c:3612)

2019-09-29  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/91726
	* resolve.c (gfc_expr_to_initialize): Bail out with a copy of
	the original expression if the array ref is a scalar and the
	array_spec has corank.
	* trans-array.c (gfc_conv_array_ref): Such expressions are OK
	even if the array ref codimen is zero.
	* trans-expr.c (gfc_get_class_from_expr): New function taken
	from gfc_get_vptr_from_expr.
	(gfc_get_vptr_from_expr): Call new function.
	* trans-stmt.c (trans_associate_var): If one of these is a
	target expression, extract the class expression from the target
	and copy its fields to a new target variable.
	* trans.h : Add prototype for gfc_get_class_from_expr.

2019-09-29  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/91726
	* gfortran.dg/coarray_poly_9.f90 : New test.

From-SVN: r276269