2021-06-18  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-06-16  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95501
	PR fortran/95502
	* expr.c (gfc_check_pointer_assign): Avoid NULL pointer
	dereference.
	* match.c (gfc_match_pointer_assignment): Likewise.
	* parse.c (gfc_check_do_variable): Avoid comparison with NULL
	symtree.

2021-06-16  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

	PR fortran/82376
	* trans-expr.c (gfc_conv_procedure_call): Evaluate function result
	and then pass a pointer.

2021-06-04  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-06-04  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/99839
	* frontend-passes.c (inline_matmul_assign): Do not inline matmul
	if the assignment to the resulting array if it is not of canonical
	type (real/integer/complex/logical).

2021-05-28  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-05-17  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/98411
	* trans-decl.c (gfc_finish_var_decl): Add check for explicit SAVE
	attribute.

2021-05-05  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-05-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100274
	* interface.c (gfc_compare_actual_formal): Continue checks after
	emitting warning for argument length mismatch.
	* trans-expr.c (gfc_conv_procedure_call): Check for NULL pointer
	dereference.

2021-04-29  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-04-28  Tobias Burnus  <tobias@codesourcery.com>

	* openmp.c (gfc_match_omp_variable_list): Gobble whitespace before
	checking whether a '%' or parenthesis-open follows as next character.

2021-04-27  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-04-24  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100154
	* check.c (variable_check): Allow function reference having a data
	pointer result.
	(arg_strlen_is_zero): New function.
	(gfc_check_fgetputc_sub): Add static check of character and status
	arguments.
	(gfc_check_fgetput_sub): Likewise.
	* intrinsic.c (add_subroutines): Fix argument name for the
	character argument to intrinsic subroutines fget[c], fput[c].

2021-04-18  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-04-16  Harald Anlauf  <anlauf@gmx.de>
		    Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/63797
	* module.c (write_symtree): Do not write interface of intrinsic
	procedure to module file for F2003 and newer.

2021-04-12  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-04-09  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99817
	* trans-types.c (gfc_get_function_type): Also generate hidden
	coarray argument for character arguments.

2021-04-08  Release Manager

	* GCC 10.3.0 released.

2021-04-01  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-04-01  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/99840
	* simplify.c (gfc_simplify_transpose): Properly initialize
	resulting shape.

2021-03-29  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-03-26  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99651
	* intrinsic.c (gfc_intrinsic_func_interface): Set
	attr.proc = PROC_INTRINSIC if FL_PROCEDURE.

2021-03-25  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-03-23  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93660
	* trans-decl.c (build_function_decl): Add comment;
	increment hidden_typelist for caf_token/caf_offset.
	* trans-types.c (gfc_get_function_type): Add comment;
	add missing caf_token/caf_offset args.

2021-03-25  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-03-24  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99369
	* resolve.c (resolve_operator): Make 'msg' buffer larger
	and use snprintf.

2021-03-23  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-03-22  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99688
	* match.c (select_type_set_tmp, gfc_match_select_type,
	gfc_match_select_rank): Fix 'name' buffersize to avoid out of bounds.
	* resolve.c (resolve_select_type): Likewise.

2021-03-19  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-03-10  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/99205
	* data.c (gfc_assign_data_value): Reject non-constant character
	length for lvalue.
	* trans-array.c (gfc_conv_array_initializer): Restrict loop to
	elements which are defined to avoid NULL pointer dereference.

2021-03-15  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2021-03-15  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99545
	* trans-stmt.c (gfc_trans_allocate): Mark the initialization
	assignment by setting init_flag.

2021-02-26  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-01-14  Harald Anlauf  <anlauf@gmx.de>

	* gfortran.h (gfc_resolve_substring): Add prototype.
	* primary.c (match_string_constant): Simplify substrings with
	constant starting and ending points.
	* resolve.c: Rename resolve_substring to gfc_resolve_substring.
	(gfc_resolve_ref): Use renamed function gfc_resolve_substring.

2021-02-24  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2021-02-23  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99124
	* resolve.c (resolve_fl_procedure): Include class results in
	the test for F2018, C15100.
	* trans-array.c (get_class_info_from_ss): Do not use the saved
	descriptor to obtain the class expression for variables. Use
	gfc_get_class_from_expr instead.

2021-02-23  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-02-21  Harald Anlauf  <anlauf@gmx.de>

	* trans-expr.c (gfc_conv_procedure_call): Do not add clobber to
	allocatable intent(out) argument.

2021-02-22  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-02-22  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99171
	* trans-openmp.c (gfc_omp_is_optional_argument): Regard optional
	dummy procs as nonoptional as no special treatment is needed.

2021-02-22  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-02-19  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99027
	* simplify.c (simplify_bound_dim): Honor DIMEN_ELEMENT
	when using dim=.

2021-02-19  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-02-16  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99111
	* io.c (resolve_tag_format): Reject BT_DERIVED/CLASS/VOID
	as (array-valued) FORMAT tag.

2021-02-12  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-02-12  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99043
	* trans-expr.c (gfc_conv_procedure_call): Don't reset
	rank of assumed-rank array.

2021-02-11  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2021-02-11  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/98897
	* match.c (gfc_match_call): Include associate names as possible
	entities with typebound subroutines. The target needs to be
	resolved for the type.

2021-02-11  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2021-02-11  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99060
	* primary.c (gfc_match_varspec): Test for non-null 'previous'
	before using its name in the error message.

2021-01-28  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-01-28  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/86470
	* trans.c (gfc_call_malloc): Allocate area of size 1 if passed
	size is NULL (as documented).

2021-01-25  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2021-01-25  Steve Kargl  <kargl@gcc.gnu.org>

	PR fortran/98517
	* resolve.c (resolve_charlen): Check that length expression is
	present before testing for scalar/integer..

2021-01-25  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-12-29  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/93833
	* trans-array.c (get_array_ctor_var_strlen): If the character
	length backend_decl cannot be found, convert the expression and
	use the string length. Clear up some minor white space issues
	in the rest of the file.

2021-01-23  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-12-26  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/98022
	* data.c (gfc_assign_data_value): Throw an error for inquiry
	references. Follow with corrected code that would provide the
	expected result and provides clean error recovery.

2021-01-23  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-12-12  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/98022
	* data.c (gfc_assign_data_value): Handle inquiry references in
	the data statement object list.

2021-01-07  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-01-06  Harald Anlauf  <anlauf@gmx.de>

	* resolve.c (resolve_component): Add check for valid CLASS
	reference before trying to access CLASS data.

2021-01-07  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-08-02  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/96325
	* primary.c (gfc_match_varspec): In the case that a component
	reference is added to an intrinsic type component, emit the
	error message in this function.

2021-01-07  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/83118
	* trans-array.c (gfc_alloc_allocatable_for_assignment): Make
	sure that class expressions are captured for dummy arguments by
	use of gfc_get_class_from_gfc_expr otherwise the wrong vptr is
	used.
	* trans-expr.c (gfc_get_class_from_gfc_expr): New function.
	(gfc_get_class_from_expr): If a constant expression is
	encountered, return NULL_TREE;
	(gfc_trans_assignment_1): Deallocate rhs allocatable components
	after passing derived type function results to class lhs.
	* trans.h : Add prototype for gfc_get_class_from_gfc_expr.

2021-01-07  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-12-18  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/83118
	PR fortran/96012
	* resolve.c (resolve_ordinary_assign): Generate a vtable if
	necessary for scalar non-polymorphic rhs's to unlimited lhs's.
	* trans-array.c (get_class_info_from_ss): New function.
	(gfc_trans_allocate_array_storage): Defer obtaining class
	element type until all sources of class exprs are tried. Use
	class API rather than TREE_OPERAND. Look for class expressions
	in ss->info by calling get_class_info_from_ss. After, obtain
	the element size for class descriptors. Where the element type
	is unknown, cast the data as character(len=size) to overcome
	unlimited polymorphic problems.
	(gfc_conv_ss_descriptor): Do not fix class variable refs.
	(build_class_array_ref, structure_alloc_comps): Replace code
	replicating the new function gfc_resize_class_size_with_len.
	(gfc_alloc_allocatable_for_assignment): Obtain element size
	for lhs in cases of deferred characters and class enitities.
	Move code for the element size of rhs to start of block. Clean
	up extraction of class parameters throughout this function.
	After the shape check test whether or not the lhs and rhs
	element sizes are the same. Use earlier evaluation of
	'cond_null'. Reallocation of lhs only to happen if size changes
	or element size changes.
	* trans-expr.c (gfc_resize_class_size_with_len): New function.
	(gfc_get_class_from_expr): If a constant expression is
	encountered, return NULL_TREE;
	(trans_scalar_class_assign): New function.
	(gfc_conv_procedure_call): Ensure the vtable is present for
	passing a non-class actual to an unlimited formal.
	(trans_class_vptr_len_assignment): For expressions of type
	BT_CLASS, extract the class expression if necessary. Use a
	statement block outside the loop body. Ensure that 'rhs' is
	of the correct type. Obtain rhs vptr in all circumstances.
	(gfc_trans_scalar_assign): Call trans_scalar_class_assign to
	make maximum use of the vptr copy in place of assignment.
	(trans_class_assignment): Actually do reallocation if needed.
	(gfc_trans_assignment_1): Simplify some of the logic with
	'realloc_flag'. Set 'vptr_copy' for all array assignments to
	unlimited polymorphic lhs.
	* trans.c (gfc_build_array_ref): Call gfc_resize_class_size_
	with_len to correct span for unlimited polymorphic decls.
	* trans.h : Add prototype for gfc_resize_class_size_with_len.

2021-01-04  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-01-01  Harald Anlauf  <anlauf@gmx.de>

	* class.c (gfc_find_vtab): Add check on attribute is_class.

2021-01-04  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-12-17  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/92587
	* match.c (gfc_match_assignment): Move gfc_find_vtab call from here ...
	* resolve.c (gfc_resolve_code): ... to here.

2020-12-28  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-08-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/96100
	PR fortran/96101
	* trans-array.c (get_array_charlen): Tidy up the evaluation of
	the string length for array constructors. Avoid trailing array
	references. Ensure string lengths of deferred length components
	are set. For parentheses operator apply string  length to both
	the primary expression and the enclosed expression.

2020-12-28  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-08-02  Paul Thomas  <pault@gcc.gnu.org>

	PR target/96320
	* interface.c (gfc_check_dummy_characteristics): If a module
	procedure arrives with assumed shape in the interface and
	deferred shape in the procedure itself, update the latter and
	copy the lower bounds.

2020-12-27  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-12-25  Harald Anlauf  <anlauf@gmx.de>

	* data.c (gfc_assign_data_value): Restrict use of
	create_character_initializer to constant initializers.
	* trans-expr.c (gfc_conv_initializer): Ensure that character
	initializer is constant, otherwise fall through to get the same
	error handling as for non-character cases.

2020-12-19  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-12-17  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/98307
	* trans-stmt.c (check_forall_dependencies): Extend dependency
	check to allocatable components of derived types.

2020-12-06  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-11-29  Harald Anlauf  <anlauf@gmx.de>

	* expr.c (simplify_parameter_variable): Fix up character length
	after copying an array-valued expression.

2020-12-04  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-12-03  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95342
	* decl.c (gfc_match_function_decl): Avoid NULL pointer dereference.
	(gfc_match_subroutine): Likewise.

2020-11-25  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-11-25  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/85796
	* resolve.c (traverse_data_list): Fix copy&paste errors; catch
	step=0 in implied do loop.

2020-11-12  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-11-12  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/97782
	* trans-openmp.c (gfc_trans_oacc_construct, gfc_trans_omp_parallel_do,
	gfc_trans_omp_parallel_do_simd, gfc_trans_omp_parallel_sections,
	gfc_trans_omp_parallel_workshare, gfc_trans_omp_sections
	gfc_trans_omp_single, gfc_trans_omp_task, gfc_trans_omp_teams
	gfc_trans_omp_target, gfc_trans_omp_target_data,
	gfc_trans_omp_workshare): Use code->loc instead of input_location
	when building the OMP_/OACC_ construct.

2020-11-12  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-11-10  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/95847
	* trans-decl.c (gfc_get_symbol_decl): Do not (re)set the location
	of an external procedure.
	(build_entry_thunks, generate_coarray_init, create_main_function,
	gfc_generate_function_code): Use fndecl's location in BIND_EXPR.

2020-11-11  Jakub Jelinek  <jakub@redhat.com>

	Backported from master:
	2020-11-11  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/97768
	* misc.c (gfc_typename): Use ex->value.character.length only if
	ex->expr_type == EXPR_CONSTANT.  If ex->ts.deferred, print : instead
	of length.  If ex->ts.u.cl && ex->ts.u.cl->length == NULL, print *
	instead of length.  Otherwise if character length is non-constant,
	print just CHARACTER or CHARACTER(KIND=N).

2020-11-06  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-11-06  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/97652
	* module.c (mio_symbol): Fix symbol name for pdt_type.

2020-11-06  Thomas Schwinge  <thomas@codesourcery.com>

	Backported from master:
	2020-11-06  Thomas Schwinge  <thomas@codesourcery.com>

	* openmp.c (oacc_is_parallel, resolve_oacc_params_in_parallel):
	Remove.
	(resolve_oacc_loop_blocks): Don't call the former.

2020-11-03  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-10-27  Harald Anlauf  <anlauf@gmx.de>

	* resolve.c (gfc_impure_variable): A dummy argument with the VALUE
	attribute may be redefined without making a procedure impure.

2020-11-03  Thomas Schwinge  <thomas@codesourcery.com>

	Backported from master:
	2020-11-03  Thomas Schwinge  <thomas@codesourcery.com>

	PR fortran/92793
	* trans-openmp.c (gfc_trans_omp_clauses): More precise location
	information for OpenACC 'gang', 'worker', 'vector' clauses with
	argument.

2020-11-02  Thomas Schwinge  <thomas@codesourcery.com>

	Backported from master:
	2020-11-02  Thomas Schwinge  <thomas@codesourcery.com>

	PR fortran/92793
	* trans.c (gfc_set_backend_locus): Use 'gfc_get_location'.
	(gfc_restore_backend_locus): Adjust.

2020-10-22  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-10-16  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95979
	* expr.c (gfc_check_init_expr): Fix check of return code from
	gfc_intrinsic_func_interface.
	* intrinsic.c (gfc_intrinsic_func_interface): Add further attempt
	of simplification of elemental intrinsics with array arguments.
	* iresolve.c (gfc_resolve_index_func): Keep optional KIND argument
	for simplification of elemental use of INDEX.

2020-10-08  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-10-04  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/97272
	* trans-intrinsic.c (strip_kind_from_actual): Helper function for
	removal of KIND argument.
	(gfc_conv_intrinsic_minmaxloc): Ignore KIND argument here, as it
	is treated elsewhere.

2020-09-28  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Revert:
	2020-09-27  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95614
	* decl.c (gfc_get_common): Use gfc_match_common_name instead
	of match_common_name.
	* decl.c (gfc_bind_idents): Use gfc_match_common_name instead
	of match_common_name.
	* match.c : Rename match_common_name to gfc_match_common_name.
	* match.c (gfc_match_common): Use gfc_match_common_name instead
	of match_common_name.
	* match.h : Rename match_common_name to gfc_match_common_name.
	* resolve.c (resolve_common_vars): Check each symbol in a
	common block has a global symbol.  If there is a global symbol
	issue an error if the symbol type is known as is not a common
	block name.

2020-09-27  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-09-27  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95614
	* decl.c (gfc_get_common): Use gfc_match_common_name instead
	of match_common_name.
	* decl.c (gfc_bind_idents): Use gfc_match_common_name instead
	of match_common_name.
	* match.c : Rename match_common_name to gfc_match_common_name.
	* match.c (gfc_match_common): Use gfc_match_common_name instead
	of match_common_name.
	* match.h : Rename match_common_name to gfc_match_common_name.
	* resolve.c (resolve_common_vars): Check each symbol in a
	common block has a global symbol.  If there is a global symbol
	issue an error if the symbol type is known as is not a common
	block name.

2020-09-18  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-09-17  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/96041
	PR fortran/93423
	* decl.c (gfc_match_submod_proc): Avoid later double-free
	in the error case.

2020-09-18  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-02  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/93423
	* resolve.c (resolve_symbol): Avoid NULL pointer dereference.

2020-09-11  Jakub Jelinek  <jakub@redhat.com>

	Backported from master:
	2020-09-02  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/96859
	* check.c (gfc_boz2real, gfc_boz2int): When clearing first two bits,
	change also '2' to '0' and '3' to '1' rather than just handling '4'
	through '7'.

2020-09-09  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-09-09  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/95109
	PR fortran/94690
	* resolve.c (gfc_resolve_code): Also call
	gfc_resolve_omp_parallel_blocks for 'distribute parallel do (simd)'.
	* openmp.c (gfc_resolve_omp_parallel_blocks): Handle it.
	* trans-openmp.c (gfc_trans_omp_target): For TARGET_PARALLEL_DO_SIMD,
	call simd not do processing function.

2020-09-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	Backported from master:
	2020-09-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* intrinsic.texi: Fix description of FINDLOC result.

2020-09-01  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-09-01  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95398
	* resolve.c (resolve_select_type): Add check for BT_CLASS
	type before using the CLASS_DATA macro which will have a
	NULL pointer to derive components if it isn't BT_CLASS.

2020-08-31  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2020-08-28  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/94672
	* trans-array.c (gfc_trans_g77_array): Check against the parm decl and
	set the nonparm decl used for the is-present check to NULL if absent.

2020-08-27  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-08-27  Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95882
	* decl.c (char_len_param_value): Check gfc_seen_div0 and
	if it is set return MATCH_ERROR.

2020-08-11  Paul Thomas  <pault@gcc.gnu.org>

	Backported from master:
	2020-08-10  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/96312
	* trans-expr.c (fcncall_realloc_result): Only compare shapes if
	lhs was allocated..

2020-07-29  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-07-29  Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/96319
	* intrinsic.c (gfc_convert_type_warn):  Add check for
	LOGICAL type so that warnings are not output.

2020-07-27  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-07-14  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95612
	* expr.c (gfc_check_pointer_assigb): Output an error if
	rvalue is a zero sized array or output an error if rvalue
	doesn't have a symbol tree.

2020-07-26  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-06-22  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95585
	* check.c (gfc_check_reshape): Add check for a value when
	the symbol has an attribute flavor FL_PARAMETER.

2020-07-23  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-10  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95980
	* class.c (gfc_add_component_ref, gfc_build_class_symbol):
	Add checks for NULL pointer dereference.
	* primary.c (gfc_variable_attr): Likewise.
	* resolve.c (resolve_variable, resolve_assoc_var)
	(resolve_fl_var_and_proc, resolve_fl_variable_derived)
	(resolve_symbol): Likewise.

2020-07-23  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-06  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95980
	* match.c (copy_ts_from_selector_to_associate, build_class_sym):
	Distinguish between unlimited polymorphic and ordinary variables
	to avoid NULL pointer dereference.
	* resolve.c (resolve_select_type):
	Distinguish between unlimited polymorphic and ordinary variables
	to avoid NULL pointer dereference.

2020-07-23  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-10  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/96086
	* match.c (gfc_match_select_rank): Catch NULL pointer
	dereference.
	* resolve.c (resolve_assoc_var): Catch NULL pointer dereference
	that may occur after an illegal declaration.

2020-07-23  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-21  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/89574
	* trans-decl.c (gfc_get_extern_function_decl): Check whether a
	symbol belongs to a different module.

2020-07-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	Backported from master:
	2020-07-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/96220
	* dump-parse-tree.c (get_c_type_name): Always use the entries from
	c_interop_kinds_table to find the correct C type.

2020-07-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/96018
	* frontend-passes.c (gfc_check_externals): Adjust formatting.
	(implicit_pure_call): New function.
	(implicit_pure_expr): New function.
	(gfc_fix_implicit_pure): New function.
	* gfortran.h (gfc_fix_implicit_pure): New prototype.
	* parse.c (translate_all_program_units): Call gfc_fix_implicit_pure.

2020-07-23  Release Manager

	* GCC 10.2.0 released.

2020-07-13  Julian Brown  <julian@codesourcery.com>

	Backported from master:
	2020-07-09  Julian Brown  <julian@codesourcery.com>

	* trans-openmp.c (gfc_trans_omp_clauses): Use 'inner' not 'decl' for
	derived type members which themselves have derived types.

2020-07-08  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-06  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95709
	* resolve.c (gfc_resolve_code): Check for valid arguments to
	assigned GOTO.

2020-07-06  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-07-02  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/93337
	* class.c (gfc_find_derived_vtab): Punt if name is not set.

2020-07-05  Thomas Koenig  <tkoenig@gcc.gnu.org>

	Backported from master:
	2020-06-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/95366
	* gfortran.h (gfc_typename): Add optional argument for_hash.
	* misc.c (gfc_typename): When for_hash is true, just retur
	  CHARACTER(kind).
	* class.c (gfc_intrinsic_hash_value): Call gfc_typename with
	  for_hash = true.

2020-07-02  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-30  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/88379
	* resolve.c (resolve_assoc_var): Avoid NULL pointer dereference.

2020-07-01  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-07-01  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95829
	* decl.c (gfc_match_decl_type_spec): Compare with "* ) " instead
	of "*)".

2020-06-30  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-29  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95978
	* decl.c (gfc_match_data): Avoid NULL pointer dereference.

2020-06-30  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-29  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/71706
	* trans-stmt.c (gfc_trans_sync): Do proper kind conversion in
	bounds-checking code.

2020-06-30  Thomas Koenig  <tkoenig@gcc.gnu.org>

	Backported from master:
	2020-06-29  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/95743
	* trans-decl.c (gfc_generate_function_code): Do not generate
	recursion check for compiler-generated procedures.

2020-06-29  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-28  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95340
	* match.c (gfc_match_select_rank): Do not dereference NULL pointer.

2020-06-29  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-28  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95880
	* symbol.c (gfc_add_type): If sym->ns->proc_name is set, use it,
	otherwise fall back to sym->name.

2020-06-27  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-27  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95881
	* resolve.c (resolve_symbol): Avoid NULL pointer dereference.

2020-06-26  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-25  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95826
	* decl.c (gfc_match_decl_type_spec): Replace a fixed size
	buffer by a pointer and reallocate if necessary.

2020-06-26  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-25  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95828
	* match.c (select_rank_set_tmp): Enlarge internal buffer used in
	generating a mangled name.
	* resolve.c (resolve_select_rank): Likewise.

2020-06-25  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-24  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95827
	* iresolve.c (gfc_get_string): Enlarge internal buffer used in
	generating the mangled name.

2020-06-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	Backported from master:
	2020-06-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/95812
	* dependency.c (ref_same_as_full_array): Handle case of AR_FULL
	vs. AR_FULL.

2020-06-23  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master:
	2020-06-22  Steven G. Kargl  <kargl@gcc.gnu.org>
		    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/95708
	* intrinsic.c (add_functions): Replace CLASS_INQUIRY with
	CLASS_TRANSFORMATIONAL for intrinsic num_images.
	(make_generic): Replace ACTUAL_NO with ACTUAL_YES for
	intrinsic team_number.
	* resolve.c (resolve_fl_procedure): Check pointer ts.u.derived
	exists before using it.

2020-06-22  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-20  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95707
	* gfortran.h (gfc_common_head): Enlarge buffer.
	* trans-common.c (gfc_sym_mangled_common_id): Enlarge temporary
	buffers, and add check on length on mangled name to prevent
	overflow.

2020-06-22  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-20  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95688
	* iresolve.c (gfc_get_string): Enlarge static buffer size.

2020-06-22  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-20  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95687
	* class.c (get_unique_type_string): Return a string with dynamic
	length.
	(get_unique_hashed_string, gfc_hash_value): Use dynamic result
	from get_unique_type_string instead of static buffer.

2020-06-22  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-20  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95689
	* interface.c (check_sym_interfaces): Enlarge temporary buffer,
	and add check on length on mangled name to prevent overflow.

2020-06-22  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-20  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95587
	* match.c (gfc_match_equivalence): Check constraints on
	EQUIVALENCE objects also for CLASS variables.

2020-06-17  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2020-06-17  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95088
	* class.c (get_unique_type_string): Replace use of fixed size
	buffer by internally passing a pointer to strings.

2020-06-14  Steven G. Kargl  <kargl@gcc.gnu.org>
	    Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95544
	* check.c (invalid_null_arg): Rename to gfc_invalid_null_arg.
	(gfc_check_associated, gfc_check_kind, gfc_check_merge)
	(gfc_check_shape, gfc_check_size, gfc_check_spread)
	(gfc_check_transfer): Adjust.
	(gfc_check_len_lentrim, gfc_check_trim): Check for NULL() argument.
	* gfortran.h: Declare gfc_invalid_null_arg ().
	* intrinsic.c (check_arglist): Check for NULL() argument.

2020-06-14  Steve Kargl  <kargl@gcc.gnu.org>
	    Harald Anlauf  <anlauf@gmx.de>

	PR fortran/93366
	* check.c (gfc_check_associated, invalid_null_arg): Factorize
	check for presence of invalid NULL() argument.
	(gfc_check_kind, gfc_check_merge, gfc_check_shape)
	(gfc_check_sizeof, gfc_check_spread, gfc_check_transfer): Use this
	check for presence of invalid NULL() arguments.

2020-06-14  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95503
	* expr.c (gfc_check_pointer_assign): Skip contiguity check of rhs
	of pointer assignment if lhs cannot be simply contiguous.

2020-06-14  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94109
	* class.c (finalize_component): Return early if finalization has
	already happened for expression and component within namespace.
	* gfortran.h (gfc_was_finalized): New type.
	(gfc_namespace): Add member was_finalzed.
	(gfc_expr): Remove finalized.
	* symbol.c (gfc_free_namespace): Free was_finalized.

2020-06-11  Harald Anlauf  <anlauf@gmx.de>
	    Steven G. Kargl   <kargl@gcc.gnu.org>

	PR fortran/95611
	* decl.c (access_attr_decl): Use correct symbol in error message.

2020-06-11  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95091
	* class.c (gfc_hash_value): Add cast.

2020-06-11  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95091
	* class.c (get_unique_type_string, gfc_hash_value): Enlarge
	buffers, and check whether the strings returned by
	get_unique_type_string() fit.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95373
	* primary.c (is_inquiry_ref): Move validity check of inquiry
	references against selected Fortran standard from here...
	(gfc_match_varspec) ...to here.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95373
	* primary.c (is_inquiry_ref): Check validity of inquiry
	references against selected Fortran standard.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95106
	* trans-common.c (gfc_sym_mangled_common_id): Enlarge temporaries
	for name-mangling.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95530
	PR fortran/95537
	* decl.c (gfc_match_decl_type_spec): Enlarge buffer, and enhance
	string copy to detect buffer overflow.
	* gfortran.h (gfc_common_head): Enlarge buffer.
	* trans-common.c (finish_equivalences): Enhance string copy to
	detect buffer overflow.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95090
	* class.c (get_unique_type_string): Use buffer overrun check.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95090
	* class.c (get_unique_type_string): Enlarge temporary for
	name-mangling.  Use strncpy to prevent buffer overrun.
	(get_unique_hashed_string): Enlarge temporary.
	(gfc_hash_value): Enlarge temporary for name-mangling.

2020-06-05  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95090
	* iresolve.c (gfc_get_string): Enlarge temporary for
	name-mangling.

2020-06-05  Steven G. Kargl  <kargl@gcc.gnu.org>
	    Harald Anlauf  <anlauf@gmx.de>

	PR fortran/95500
	* trans-expr.c (gfc_conv_expr_reference): Do not dereference NULL
	pointer.

2020-06-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94361
	* class.c (finalize_component): Use expr->finalized instead of
	comp->finalized.
	* gfortran.h (gfc_component): Remove finalized member.
	(gfc_expr): Add it here instead.

2020-05-28  Steven G. Kargl  <kargl@gcc.gnu.org>
	    Mark Eggleston  <markeggleston@gcc.gnu.org>
	    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/94397
	* match.c (gfc_match_type_spec): New variable ok initialised
	to true. Set ok with the return value of gfc_reduce_init_expr
	called only if the expression is not EXPR_CONSTANT and is not
	EXPR_VARIABLE. Add !ok to the check for type not being integer
	or the rank being greater than zero.

2020-05-28  Tobias Burnus  <tobias@codesourcery.com>
	    Mark Eggleston  <markeggleston@gnu.gcc.org>

	PR fortran/50392
	* trans-decl.c (gfc_get_symbol_decl): Remove unnecessary block
	delimiters.  Add auxiliary variables if a label is assigned to
	a return variable. (gfc_gat_fake_result): If the symbol has an
	assign attribute set declaration from the symbol's backend
	declaration.

2020-05-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR libfortran/95191
	* libgfortran.h (libgfortran_error_codes): Add
	LIBERROR_BAD_WAIT_ID.

2020-05-20  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master
	2020-05-20  Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/39695
	* resolve.c (resolve_fl_procedure): Set name depending on
	whether the result attribute is set.  For PROCEDURE/RESULT
	conflict use the name in sym->ns->proc_name->name.
	* symbol.c (gfc_add_type): Add check for function and result
	attributes use sym->ns->proc_name->name if both are set.
	Where the symbol cannot have a type use the name in
	sym->ns->proc_name->name.

2020-05-13  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from master
	2020-05-13  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93497
	* decl.c (char_len_param_value): Check whether character
	length expression is of type EXPR_OP and if so simplify it.
	* resolve.c (resolve_charlen): Reject length if it has a
	rank.

2020-05-12  Tobias Burnus  <tobias@codesourcery.com>

	Backported from mainline
	2020-05-11  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/94672
	* trans.h (gfc_conv_expr_present): Add use_saved_decl=false argument.
	* trans-expr.c (gfc_conv_expr_present): Likewise; use DECL directly
	and only if use_saved_decl is true, use the actual PARAM_DECL arg (saved
	descriptor).
	* trans-array.c (gfc_trans_dummy_array_bias): Set local 'arg.0'
	variable to NULL if 'arg' is not present.
	* trans-openmp.c (gfc_omp_check_optional_argument): Simplify by checking
	'arg.0' instead of the true PARM_DECL.
	(gfc_omp_finish_clause): Remove setting 'arg.0' to NULL.

2020-05-11  Mark Eggleston  <markeggleston@gcc.gnu.org>

	Backported from mainline
	2020-05-11  Janus Weil  <janus@gcc.gnu.org>
		    Dominique d'Humieres  <dominiq@lps.ens.fr>

	PR fortran/59107
	* gfortran.h: Rename field resolved as resolve_symbol_called
	and assign two 2 bits instead of 1.
	* interface.c (check_dtio_interface1): Use new field name.
	(gfc_find_typebound_dtio_proc): Use new field name.
	* resolve.c (gfc_resolve_intrinsic): Replace check of the formal
	field with resolve_symbol_called is at least 2, if it is not
	set the field to 2.  (resolve_typebound_procedure): Use new field
	name.  (resolve_symbol): Use new field name and check whether it
	is at least 1, if it is not set the field to 1.

2020-05-07  Release Manager

	* GCC 10.1.0 released.

2020-04-29  Stefan Schulze Frielinghaus  <stefansf@linux.ibm.com>

	PR fortran/94769
	* io.c (check_io_constraints): Initialize local variable num to
	-1 and assert that it receives a meaningful value by function
	compare_to_allowed_values.

2020-04-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/93956
	PR fortran/94788
	* expr.c (gfc_check_pointer_assign): Revert patch for PR 93956.
	* interface.c: Likewise.

2020-04-25  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94578
	* trans-expr.c (arrayfunc_assign_needs_temporary): If the
	LHS is a subref pointer, we also need a temporary.

2020-04-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/93956
	* expr.c (gfc_check_pointer_assign): Also set subref_array_pointer
	when a function returns a pointer.
	* interface.c (gfc_set_subref_array_pointer_arg): New function.
	(gfc_procedure_use): Call it.

2020-04-22  Fritz Reese  <foreese@gcc.gnu.org>

	* trigd_fe.inc: Use mpfr to compute cosd(30) rather than a host-
	precision floating point literal based on an invalid macro.

2020-04-22  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

	PR fortran/90350
	* simplify.c (simplify_bound): In the case of assumed-size arrays
	check if the reference is to a full array.

2020-04-22  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/94709
	* scanner.c (load_line): In fixed form, also treat 'C' as comment and
	'D'/'d' only with -fd-lines-as-comments. Treat '!$' with -fopenmp,
	'!$acc' with -fopenacc and '!GCC$' as non-comment to permit <tab>
	and truncation warnings.

2020-04-20  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* dump-parse-tree.c (show_attr): Add numerous flags, some cleanup.

2020-04-20  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/93364
	* array.c (gfc_set_array_spec): Check for sum of rank and corank
	not exceeding GFC_MAX_DIMENSIONS.

2020-04-20  Steve Kargl  <kargl@gcc.gnu.org>
	Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91800
	* decl.c (variable_decl): Reject Hollerith constants as type
	initializer.

2020-04-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/93500
	* resolve.c (resolve_operator): If both operands are
	NULL, return false.
	* simplify.c (simplify_bound): If a division by zero
	was seen during bound simplification, free the
	corresponcing expression and return &gfc_bad_expr.

2020-04-17  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/94090
	* gfortran.dg (gfc_compare_interfaces): Add
	optional argument bad_result_characteristics.
	* interface.c (gfc_check_result_characteristics): Fix
	whitespace.
	(gfc_compare_interfaces): Handle new argument; return
	true if function return values are wrong.
	* resolve.c (resolve_global_procedure): Hard error if
	the return value of a function is wrong.

2020-04-15  Fritz Reese  <foreese@gcc.gnu.org>
	Linus Koenig <link@sig-st.de>

	PR fortran/94192
	* simplify.c (simplify_bound): Simplify condition for error check.

2020-04-14  Tobias Burnus  <tobias@codesourcery.com>

	* module.c (gfc_match_use): Fix name-conflict check for use-associating
	the same symbol again in a submodule.

2020-04-13  Linus Koenig <link@sig-st.de>

	PR fortran/94192
	* resolve.c (resolve_fl_var_and_proc): Set flag "error" to 1 if
	pointer is found to not have an assumed rank or a deferred shape.
	* simplify.c (simplify_bound): If an error has been issued for a
	given pointer, one should not attempt to find its bounds.

2020-04-09  Fritz Reese  <foreese@gcc.gnu.org>

	PR fortran/87923
	* gfortran.h (gfc_resolve_open, gfc_resolve_close): Add
	locus parameter.
	(gfc_resolve_dt): Add code parameter.
	* io.c (async_io_dt, check_char_variable, is_char_type): Removed.
	(resolve_tag_format): Add locus to error message regarding
	zero-sized array in FORMAT tag.
	(check_open_constraints, check_close_constraints): New functions
	called at resolution time.
	(gfc_match_open, gfc_match_close, match_io): Move checks which don't
	affect the match result to new functions check_open_constraints,
	check_close_constraints, check_io_constraints.
	(gfc_resolve_open, gfc_resolve_close): Call new functions
	check_open_constraints, check_close_constraints after all tags have
	been independently resolved.  Remove duplicate constraints which are
	already verified by resolve_tag.  Explicitly pass locus to all error
	reports.
	(compare_to_allowed_values): Add locus parameter and provide
	explicit locus all error reports.
	(match_open_element, match_close_element, match_file_element,
	match_dt_element, match_inquire_element): Remove redundant special
	cases for ASYNCHRONOUS and IOMSG tags.
	(gfc_resolve_dt): Remove redundant special case for format
	expression.  Call check_io_constraints, forwarding an I/O list as
	the io_code parameter if present.
	(check_io_constraints): Change return type to bool.  Pass explicit
	locus to error reports.  Move generic checks after tag-specific
	checks, since errors are no longer buffered.  Move simplification of
	format string to match_io.  Remove redundant checks which are
	verified by resolve_tag.  Remove usage of async_io_dt flag and
	explicitly mark symbols used in asynchronous I/O with the
	asynchronous attribute.
	* resolve.c (resolve_transfer, resolve_fl_namelist): Remove checks
	for async_io_dt flag.  This is now done in io.c.
	(check_io_constraints).
	(gfc_resolve_code): Pass code locus to gfc_resolve_open,
	gfc_resolve_close, gfc_resolve_dt.

2020-04-07  Fritz Reese  <foreese@gcc.gnu.org>
	    Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93871
	* gfortran.h (GFC_ISYM_ACOSD, GFC_ISYM_ASIND, GFC_ISYM_ATAN2D,
	GFC_ISYM_ATAND, GFC_ISYM_COSD, GFC_ISYM_COTAND, GFC_ISYM_SIND,
	GFC_ISYM_TAND): New.
	* intrinsic.c (add_functions): Remove check for flag_dec_math.
	Give degree trig functions simplification and name resolution
	functions (e.g, gfc_simplify_atrigd () and gfc_resolve_atrigd ()).
	(do_simplify): Remove special casing of degree trig functions.
	* intrinsic.h (gfc_simplify_acosd, gfc_simplify_asind,
	gfc_simplify_atand, gfc_simplify_cosd, gfc_simplify_cotand,
	gfc_simplify_sind, gfc_simplify_tand, gfc_resolve_trigd2): Add new
	prototypes.
	(gfc_simplify_atrigd, gfc_simplify_trigd, gfc_resolve_cotan,
	resolve_atrigd): Remove prototypes of deleted functions.
	* iresolve.c (is_trig_resolved, copy_replace_function_shallow,
	gfc_resolve_cotan, get_radians, get_degrees, resolve_trig_call,
	gfc_resolve_atrigd, gfc_resolve_atan2d): Delete functions.
	(gfc_resolve_trigd, gfc_resolve_trigd2): Resolve to library functions.
	* simplify.c (rad2deg, deg2rad, gfc_simplify_acosd, gfc_simplify_asind,
	gfc_simplify_atand, gfc_simplify_atan2d, gfc_simplify_cosd,
	gfc_simplify_sind, gfc_simplify_tand, gfc_simplify_cotand): New
	functions.
	(gfc_simplify_atan2): Fix error message.
	(simplify_trig_call, gfc_simplify_trigd, gfc_simplify_atrigd,
	radians_f): Delete functions.
	* trans-intrinsic.c: Add LIB_FUNCTION decls for sind, cosd, tand.
	(rad2deg, gfc_conv_intrinsic_atrigd, gfc_conv_intrinsic_cotan,
	gfc_conv_intrinsic_cotand, gfc_conv_intrinsic_atan2d): New functions.
	(gfc_conv_intrinsic_function): Handle ACOSD, ASIND, ATAND, COTAN,
	COTAND, ATAN2D.
	* trigd_fe.inc: New file. Included by simplify.c to implement
	simplify_sind, simplify_cosd, simplify_tand with code common to the
	libgfortran implementation.

2020-04-06  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93686
	* decl.c (gfc_match_data): Handle data matching for derived type
	pointers.

2020-04-02  Tobias Burnus  <tobias@codesourcery.com>

	* gfortran.h (gfc_resolve_formal_arglist): Add prototype.
	* interface.c (check_dtio_interface1): Call it.
	* resolve.c (gfc_resolve_formal_arglist): Renamed from
	resolve_formal_arglist, removed static.
	(find_arglists, resolve_types): Update calls.

2020-04-02  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93522
	* match.c (gfc_match_select_rank): Fix error cleanup.

2020-04-02  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93498
	* check.c (gfc_check_findloc):  If the kinds of the arguments
	differ goto label "incompat".

2020-04-02 Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/94030
	* resolve.c (resolve_equivalence): Correct formatting
	around the label "identical_types".  Instead of using
	gfc_resolve_array_spec use is_non_constants_shape_array
	to determine whether the array can be used in a in an
	equivalence statement.

2020-04-01  Mark Eggleston  <mark.eggleston@codethink.com>

	PR fortran/94386
	expr.c (simplify_parameter_variable): Restore code deleted
	in PR94246.

2020-03-28  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/94246
	* arith.c : Remove trailing white space.
	* expr.c (scalarize_intrinsic_call): Remove the error checking.
	Make a copy of the expression to be simplified and only replace
	the original if the simplification succeeds.

2020-03-28  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/94348
	* decl.c (gfc_match_submod_proc): Add result var to the
	proc's namespace.

2020-03-27  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93957
	* trans-array.c (gfc_alloc_allocatable_for_assignment): Accept
	nonallocatable, nonpointer deferred-rank arrays.

2020-03-27  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93363
	* resolve.c (resolve_assoc_var): Reject association to DT and
	function name.

2020-03-25  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93484
	* match.c (gfc_match_type_spec): Replace gfc_match_init_expr with
	gfc_match_expr. Return m if m is MATCH_NO or MATCH_ERROR.

2020-03-23  Mark Eggleston  <mark.eggleston@codethink.com>
	Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93600
	* expr.c (simplify_parameter_variable): Check whether the ref
	chain contains INQUIRY_LEN or INQUIRY_KIND and set inquiry
	boolean. When an empty array has been identified and a new
	new EXPR_ARRAY expression has been created only return that
	expression if inquiry is not set. This allows the new
	expression to drop through to be simplified into a
	EXPR_CONSTANT representing %kind or %len.
	* matc.c (gfc_match_assignment): If lvalue doesn't have a
	symtree free both lvalue and rvalue expressions and return
	an error.
	* resolv.c (gfc_resolve_ref): Ensure that code to handle
	INQUIRY_LEN is only performed for arrays with deferred types.

2020-03-18  Jakub Jelinek  <jakub@redhat.com>

	* class.c (generate_finalization_wrapper): Fix up duplicated word
	issue in a comment.
	* trans-types.c (gfc_get_nodesc_array_type): Likewise.

2020-03-17  Jakub Jelinek  <jakub@redhat.com>

	* array.c (gfc_check_iter_variable): Fix up duplicated word issue
	in a comment.
	* arith.c (gfc_arith_concat): Likewise.
	* resolve.c (gfc_resolve_ref): Likewise.
	* frontend-passes.c (matmul_lhs_realloc): Likewise.
	* module.c (gfc_match_submodule, load_needed): Likewise.
	* trans-expr.c (gfc_init_se): Likewise.

2020-03-15  Lewis Hyatt  <lhyatt@gmail.com>

	* lang.opt: Avoid redundancy in the help text.

2020-03-12  Tobias Burnus  <tobias@codesourcery.com>

	PR middle-end/94120
	* openmp.c (gfc_match_oacc_declare): Accept function-result
	variables; reject variables declared in a different scoping unit.

2020-03-08  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/93581
	* resolve.c (gfc_resolve_ref): Modify array refs to be elements
	if the ref chain ends in INQUIRY_LEN.
	* trans-array.c (gfc_get_dataptr_offset): Provide the offsets
	for INQUIRY_RE and INQUIRY_IM.

2020-03-05 Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93792
	* decl.c (variable_decl): If param and initializer check
	for BOZ, if found,  output an error, set m to MATCH_ERROR
	and goto cleanup.

2020-03-02  Andrew Benson  <abensonca@gmail.com>

	PR fortran/93486
	* module.c: Increase size of variables used to read module names
	when loading interfaces from module files to permit cases where
	the name is the concatenation of a module and submodule name.
	* gfortran.dg/pr93486.f90: New test.

2020-03-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/92976
	* match.c (select_type_set_tmp): If the selector array spec has
	explicit bounds, make the temporary's bounds deferred.

2020-03-01  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/92959
	* trans-intrinsic.c (gfc_conv_associated): Eliminate
	'nonzero_charlen' and move the chunk to evaluate zero character
	length until after the argument evaluation so that the string
	length can be used.

2020-02-28  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/92785
	* trans-expr.c (gfc_conv_intrinsic_to_class): Renormalise non-
	variable expressions to be unity lbound based.

2020-02-25  Steven G. Kargl  <kargl@gcc.gnu.org>

	* simplify.c (degrees_f): Remove unused code.

2020-02-25  Jakub Jelinek  <jakub@redhat.com>

	PR translation/93864
	* intrinsic.texi (CO_BROADCAST): Fix typo, paramter -> parameter.
	* trans-array.c (gfc_allocate_pdt_comp, gfc_deallocate_pdt_comp,
	gfc_check_pdt_dummy): Fix comment typo paramter -> parameter.

2020-02-24  Mark Eggleston  <mark.eggleston@codethink.com>
	    Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93835
	* decl.c (gfc_match_data) : Check whether the data expression
	is a derived type and is a constructor. If a BOZ constant
	is encountered in the constructor output an error and return
	MATCH_ERROR.

2020-02-24  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93604
	* decl.c (gfc_match_data) : Check whether the data expression
	is a derived type and is a constructor. If a BOZ constant
	is encountered in the constructor output an error and return
	MATCH_ERROR.

2020-02-24  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93552
	* match.c (match_exit_cycle): With OpenACC, check the kernels loop
	directive and tile clause as well.

2020-02-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/93889
	* interface.c (compare_parameter): Fix error message.

2020-02-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/93890
	* interface.c: Replace "can not" by "cannot" and remove trailing
	space.

2020-02-20  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93825
	* openmp.c (resolve_oacc_loop_blocks): Move call to
	resolve_oacc_nested_loops from here ...
	(resolve_oacc_loop): ... to here.

2020-02-18  Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/93714
	* expr.c (gfc_check_pointer_assign): Move check for
	matching character length to after checking the lvalue
	attributes for target or pointer.

2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93601
	* match.c (gfc_match_assignment) : Reject assignment if
	the lhs stype is BT_CLASS and the rhs type is BT_BOZ.

2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/93603
	* match.c (gfc_match_associate) : If target expression
	has the type BT_BOZ output an error and goto
	assocListError.

2020-02-18  Steven G. Kargl  <kargl@gcc.gnu.org>
	    Mark Eggleston  <markeggleston@gcc.gnu.org>

	PR fortran/93580
	* primary.c (gfc_match_varspec): If the symbol following %
	is re or im and the primary expression type is not BT_COMPLEX
	issue an error. If the symbol is len and the primary
	expression type is not BT_CHARACTER is an error.

2020-02-10  Andrew Benson  <abensonca@gmail.com>

	PR fortran/83113
	* array.c: Do not attempt to set the array spec for a submodule
	function symbol (as it has already been set in the corresponding
	module procedure interface).
	* symbol.c: Do not reject duplicate POINTER, ALLOCATABLE, or
	DIMENSION attributes in declarations of a submodule function.
	* gfortran.h: Add a macro that tests for a module procedure in a
	submodule.
	* gfortran.dg/pr83113.f90: New test.

2020-02-03  Julian Brown  <julian@codesourcery.com>
	    Tobias Burnus  <tobias@codesourcery.com>

	* cpp.c (cpp_define_builtins): Update _OPENACC define to 201711.
	* intrinsic.texi: Update mentions of OpenACC version to 2.6.
	* gfortran.texi: Likewise. Remove experimental disclamer for OpenACC.
	* invoke.texi: Remove experimental disclamer for OpenACC.

2020-02-03  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93541
	* intrinisic.texi (OpenMP Modules OMP_LIB and OMP_LIB_KINDS):
	Add undocumented parameters from omp_lib.f90.in.

2020-02-03  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93427
	* resolve.c (resolve_assoc_var): Remove too strict check.
	* gfortran.dg/associate_51.f90: Update test case.

2020-02-01  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/92305
	* trans-types.c (gfc_get_function_type): Also push boolean_type_node
	types for non-character scalar VALUE optional dummy arguments.
	* trans-decl.c (create_function_arglist): Skip those in
	hidden_typelist.  Formatting fix.

2020-01-31  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93462
	* frontend-passes.c (gfc_code_walker): For EXEC_OACC_ATOMIC, set
	in_omp_atomic to true prevent front-end optimization.

2020-01-30  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

	PR fortran/87103
	* expr.c (gfc_check_conformance): Check vsnprintf for truncation.
	* iresolve.c (gfc_get_string): Likewise.
	* symbol.c (gfc_new_symbol): Remove check for maximum symbol
	name length.  Remove redundant 0 setting of new calloc()ed
	gfc_symbol.

2020-01-30  Paul Thomas  <pault@gcc.gnu.org>
	    Jakub Jelinek  <jakub@redhat.com>

	PR fortran/92123
	* trans-decl.c (gfc_get_symbol_decl): Call gfc_defer_symbol_init for
	CFI descs.
	(gfc_build_builtin_function_decls): Use ".w." instead of ".ww" or ".wR"
	for gfor_fndecl_{cfi_to_gfc,gfc_to_cfi}.
	(convert_CFI_desc): Handle references to CFI descriptors.

2020-01-29  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/93463
	* openmp.c (oacc_code_to_statement): Handle
	EXEC_OACC_{ROUTINE,UPDATE,WAIT,CACHE,{ENTER,EXIT}_DATA,DECLARE}.

2020-01-28  Andrew Benson  <abensonca@gmail.com>

	PR fortran/93461
	* trans.h: Increase GFC_MAX_MANGLED_SYMBOL_LEN to
	GFC_MAX_SYMBOL_LEN*3+5 to allow for inclusion of submodule name,
	plus the "." between module and submodule names.
	* gfortran.dg/pr93461.f90: New test.

2020-01-28  Andrew Benson  <abensonca@gmail.com>

	PR fortran/93473
	* parse.c: Increase length of char variables to allow them to hold
	a concatenated module + submodule name.
	* gfortran.dg/pr93473.f90: New test.

2020-01-28  Julian Brown  <julian@codesourcery.com>

	PR fortran/93025
	* openmp.c (resolve_omp_clauses): Check array references for contiguity.

2020-01-28  Julian Brown  <julian@codesourcery.com>

	* gfortran.h (gfc_symbol): Add comp_mark bitfield.
	* openmp.c (resolve_omp_clauses): Disallow mixed component and
	full-derived-type accesses to the same variable within a single
	directive.

2020-01-28  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93464
	* openmp.c (gfc_omp_check_optional_argument): Avoid ICE when
	DECL_LANG_SPECIFIC and GFC_DESCRIPTOR_TYPE_P but not
	GFC_DECL_SAVED_DESCRIPTOR as for local allocatable character vars.

2020-01-28  Tobias Burnus  <tobias@codesourcery.com>

	* gfortran.texi (Runtime): Remove tailing '.' in @menu.

2020-01-27  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/85781
	* trans-expr.c (gfc_conv_substring): Handle non-ARRAY_TYPE strings
	of Bind(C) procedures.

2020-01-22  Jakub Jelinek  <jakub@redhat.com>

	* parse.c (parse_omp_structured_block): Handle ST_OMP_TARGET_PARALLEL.
	* trans-openmp.c (gfc_trans_omp_target)
	<case EXEC_OMP_TARGET_PARALLEL>: Call pushlevel first.

	PR fortran/93329
	* openmp.c (omp_code_to_statement): Handle remaining EXEC_OMP_*
	cases.

2020-01-21  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93309
	* interface.c (gfc_procedure_use): Also check parent namespace for
	'implict none (external)'.
	* symbol.c (gfc_get_namespace): Don't set has_implicit_none_export
	to parent namespace's setting.

2020-01-19  Thomas König  <tkoenig@gcc.gnu.org>

	PR fortran/44960
	* primary.c (gfc_match_rvalue): Break after setting MATCH_ERROR.
	* resolve.c (resolve_function): Issue error when a
	function call contains a reference.

2020-01-17  Mark Eggleston  <mark.eggleston@codethink.com>

	PR fortran/93236
	* resolve.c (resolve_types): Declare boolean recursive and set with the
	value of the recursive attribute of namespace proc_name symbol
	structure if it exists.  Call gfc_save_all if both flag_automatic and
	recursive are false or ns->save_all is true.

2020-01-16  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/93253
	* check.c (gfc_invalid_boz): Mention -fallow-invalid-boz
	in the error message.
	* gfortran.texi (BOZ literal constants): List another missing
	extension and refer to -fallow-invalid-boz.
	* lang.opt (fallow-invalid-boz): Also mention 'X' in the help text
	as it is not covered by the previous wording.
	* primary.c (match_boz_constant): Tweak wording such that it is
	clear how to fix the nonstandard use.

2020-01-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/65428
	* array.c (empty_constructor): New variable.
	(empty_ts): New variable.
	(expand_constructor): Save typespec in empty_ts.
	Unset empty_constructor if there is an element.
	(gfc_expand_constructor): Initialize empty_constructor
	and empty_ts.  If there was no explicit constructor
	type and the constructor is empty, take the type from
	empty_ts.

2020-01-09  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/84135
	* array.c (gfc_set_array_spec): Fix shifting of codimensions
	when adding a dimension.
	* decl.c (merge_array_spec): Ditto. Fix using correct codimensions.

2020-01-07  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/93162
	* trans-openmp.c (gfc_trans_omp_clauses): Check for REF_ARRAY type
	before testing u.ar.type == AR_FULL.

2020-01-04  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/91640
	* trans-expr.c (gfc_conv_procedure_call): Avoid copy-out for nonvariable
	arguments to contiguous dummy args.  Avoid re-checking whether fsym is
	NULL.

2020-01-03  Tobias Burnus  <tobias@codesourcery.com>

	* trans-openmp.c (gfc_omp_check_optional_argument): Always return a
	Boolean expression; handle unallocated/disassociated actual arguments
	as absent if passed to nonallocatable/nonpointer dummy array arguments.
	(gfc_build_cond_assign): Change to assume a Boolean expr not a pointer.
	(gfc_omp_finish_clause, gfc_trans_omp_clauses): Assign NULL to generated
	array-data variable if the argument is absent. Simplify code as
	'present' is now a Boolean expression.

2020-01-03  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/92994
	* primary.c (gfc_match_rvalue): Add some flavor checks
	gfc_matching_procptr_assignment.
	* resolve.c (resolve_assoc_var): Add more checks for invalid targets.

2020-01-02  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/68020
	* array.c (gfc_match_array_spec): Fix implied-type matching
	for rank > 2.

2020-01-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/93113
	* dependency.c (gfc_dep_resolver): Handle REF_INQUIRY in switch
	for ref types.

2020-01-01  Jakub Jelinek  <jakub@redhat.com>

	Update copyright years.

	* gfortranspec.c (lang_specific_driver): Update copyright notice
	dates.
	* gfc-internals.texi: Bump @copying's copyright year.
	* gfortran.texi: Ditto.
	* intrinsic.texi: Ditto.
	* invoke.texi: Ditto.

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