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Paul Thomas ff3598bc73 re PR fortran/34640 (ICE when assigning item of a derived-component to a pointer)

2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/34640
	PR fortran/40737
	PR fortran/55763
	PR fortran/57019
	PR fortran/57116

	* expr.c (is_subref_array): Add class pointer array dummies
	to the list of expressions that return true.
	* trans-array.c: Add SPAN_FIELD and update indices for
	subsequent fields.
	(gfc_conv_descriptor_span, gfc_conv_descriptor_span_get,
	gfc_conv_descriptor_span_set, is_pointer_array,
	get_array_span): New functions.
	(gfc_get_descriptor_offsets_for_info): New function to preserve
	API for access to descriptor fields for trans-types.c.
	(gfc_conv_scalarized_array_ref): If the expression is a subref
	array, make sure that info->descriptor is a descriptor type.
	Otherwise, if info->descriptor is a pointer array, set 'decl'
	and fix it if it is a component reference.
	(build_array_ref): Simplify handling of class array refs by
	passing the vptr to gfc_build_array_ref rather than generating
	the pointer arithmetic in this function.
	(gfc_conv_array_ref): As in gfc_conv_scalarized_array_ref, set
	'decl'.
	(gfc_array_allocate): Set the span field if this is a pointer
	array. Use the expr3 element size if it is available, so that
	the dynamic type element size is used.
	(gfc_conv_expr_descriptor): Set the span field for pointer
	assignments.
	* trans-array.h: Prototypes for gfc_conv_descriptor_span_get
	gfc_conv_descriptor_span_set and
	gfc_get_descriptor_offsets_for_info added.
	trans-decl.c (gfc_get_symbol_decl): If a non-class pointer
	array, mark the declaration as a GFC_DECL_PTR_ARRAY_P. Remove
	the setting of GFC_DECL_SPAN.
	(gfc_trans_deferred_vars): Set the span field to zero in thge
	originating scope.
	* trans-expr.c (gfc_conv_procedure_call): Do not use copy-in/
	copy-out to pass subref expressions to a pointer dummy.
	(gfc_trans_pointer_assignment): Remove code for setting of
	GFC_DECL_SPAN. Set the 'span' field for non-class pointers to
	class function results. Likewise for rank remap. In the case
	that the target is not a whole array, use the target array ref
	for remap and, since the 'start' indices are missing, set the
	lbounds to one, as required by the standard.
	* trans-intrinsic.c (conv_expr_ref_to_caf_ref): Pick up the
	'token' offset from the field decl in the descriptor.
	(conv_isocbinding_subroutine): Set the 'span' field.
	* trans-io.c (gfc_trans_transfer): Always scalarize pointer
	array io.
	* trans-stmt.c (trans_associate_var): Set the 'span' field.
	* trans-types.c (gfc_get_array_descriptor_base): Add the 'span'
	field to the array descriptor.
	(gfc_get_derived_type): Pointer array components are marked as
	GFC_DECL_PTR_ARRAY_P.
	(gfc_get_array_descr_info): Replaced API breaking code for
	descriptor offset calling gfc_get_descriptor_offsets_for_info.
	* trans.c (get_array_span): New function.
	(gfc_build_array_ref): Simplify by calling get_array_span and
	obtain 'span' if 'decl' or 'vptr' present.
	* trans.h : Rename DECL_LANG_FLAG_6, GFC_DECL_SUBREF_ARRAY_P,
	as GFC_DECL_PTR_ARRAY_P.


2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/34640
	* gfortran.dg/associate_24.f90: New test.
	* gfortran.dg/assumed_type_2.f90: Adjust some of the tree dump
	checks.
	* gfortran.dg/no_arg_check_2.f90: Likewise.
	* gfortran.dg/pointer_array_1.f90: New test.
	* gfortran.dg/pointer_array_2.f90: New test.
	* gfortran.dg/pointer_array_7.f90: New test.
	* gfortran.dg/pointer_array_8.f90: New test.
	* gfortran.dg/pointer_array_component_1.f90: New test.
	* gfortran.dg/pointer_array_component_2.f90: New test.
	* gfortran.dg/goacc/kernels-alias-4.f95: Bump up both tree scan
	counts by 1.

	PR fortran/40737
	* gfortran.dg/pointer_array_3.f90: New test.

	PR fortran/57116
	* gfortran.dg/pointer_array_4.f90: New test.

	PR fortran/55763
	* gfortran.dg/pointer_array_5.f90: New test.

	PR fortran/57019
	* gfortran.dg/pointer_array_6.f90: New test.

2017-09-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/34640
	* libgfortran/libgfortran.h: Add span field to descriptor.
	* libgfortran/libtool-version : Bump up version number to 5:0:0.

From-SVN: r251949

2017-09-10 17:02:53 +00:00

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 # This file is used to maintain libtool version info for libgfortran.
 # See the libtool manual to understand the meaning of the fields.
 # This is a separate file so that version updates don't involve re-running
 # automake.
 # CURRENT:REVISION:AGE
 :0:0