path: root/gcc/fortran/ChangeLog

2021-07-15  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-07-14  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100949
	* trans-expr.c (gfc_trans_class_init_assign): Call
	gfc_conv_expr_present only for dummy variables.

2021-07-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	Backported from master:
	2021-07-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/100227
	* frontend-passes.c (traverse_io_block): Adjust test for
	when a variable is eligible for the transformation to
	array slice.

2021-06-19  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-06-18  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100283
	PR fortran/101123
	* trans-intrinsic.c (gfc_conv_intrinsic_minmax): Unconditionally
	convert result of min/max to result type.

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.

2021-06-17  Jakub Jelinek  <jakub@redhat.com>

	Backported from master:
	2021-06-09  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/100965
	* trans-openmp.c (gfc_omp_finish_clause): Gimplify OMP_CLAUSE_SIZE.

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.

2021-06-06  Andre Vehreschild  <vehre@gcc.gnu.org>
	    Steve Kargl  <kargl@gcc.gnu.org>

	PR fortran/98301
	* trans-decl.c (gfc_build_builtin_function_decls): Move decl.
	* trans-intrinsic.c (conv_intrinsic_random_init): Use bool for
	lib-call of caf_random_init instead of logical (4-byte).
	* trans.h: Add tree var for random_init.

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.

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

	Backported from master:
	2021-05-27  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100656
	* trans-array.c (gfc_conv_ss_startstride): Do not call check for
	presence of a dummy argument when a symbol actually refers to a
	non-dummy.

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

	Backported from master:
	2021-05-27  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100602
	* trans-intrinsic.c (gfc_conv_intrinsic_size): Use CLASS data
	attributes for CLASS arrays for generation of runtime error.

2021-05-25  Harald Anlauf  <anlauf@gmx.de>

	Backported from master:
	2021-05-23  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/100551
	* trans-expr.c (gfc_conv_procedure_call): Adjust check for
	implicit conversion of actual argument to an unlimited polymorphic
	procedure argument.

2021-05-25  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-25  Tobias Burnus  <tobias@codesourcery.com>
		    Johannes Nendwich  <a08727063@unet.univie.ac.at>

	* intrinsic.texi (GERROR, GETARGS, GETLOG, NORM2, PARITY, RANDOM_INIT,
	RANDOM_NUMBER): Fix typos and copy'n'paste errors.

2021-05-23  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-23  Tobias Burnus  <tobias@codesourcery.com>

	* intrinsic.texi (ATOMIC_ADD, ATOMIC_FETCH_ADD): Use the
	proper variable name in the description.

2021-05-18  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-17  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/100633
	* resolve.c (gfc_resolve_code): Reject nonintrinsic assignments in
	OMP WORKSHARE.

2021-05-17  Tobias Burnus  <tobias@codesourcery.com>

	Backported from master:
	2021-05-14  Tobias Burnus  <tobias@codesourcery.com>

	* resolve.c (resolve_symbol): Handle implicit SAVE of main-program
	for vars in 'omp threadprivate' and 'omp declare target'.

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/100218
	* expr.c (gfc_check_vardef_context): Extend check to allow pointer
	from a function reference.

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].

2021-04-27  Release Manager

	* GCC 11.1.0 released.

2021-04-20  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/100110
	* trans-decl.c (gfc_get_symbol_decl): Replace test for host
	association with a check that the current and symbol namespaces
	are the same.

2021-04-19  Thomas Schwinge  <thomas@codesourcery.com>

	* lang.opt (fopenacc-kernels=): Remove.

2021-04-16  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

	PR fortran/100094
	* trans-array.c (gfc_trans_deferred_array): Add code to initialize
	pointers and allocatables with correct TKR parameters.

2021-04-16  José Rui Faustino de Sousa  <jrfsousa@gmail.com>

	PR fortran/100018
	* resolve.c: Add association check before de-referencing pointer.

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.

2021-04-15  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99307
	* symbol.c: Remove trailing white space.
	* trans-array.c (gfc_trans_create_temp_array): Create a class
	temporary for class expressions and assign the new descriptor
	to the data field.
	(build_class_array_ref): If the class expr can be extracted,
	then use that for 'decl'. Class function results are reliably
	handled this way. Call gfc_find_and_cut_at_last_class_ref to
	eliminate largely redundant code. Remove dead code and recast
	the rest of the code to extract 'decl' for remaining cases.
	Call gfc_build_spanned_array_ref.
	(gfc_alloc_allocatable_for_assignment): Use class descriptor
	element length for 'elemsize1'. Eliminate repeat set of dtype
	for class expressions.
	* trans-expr.c (gfc_find_and_cut_at_last_class_ref): Include
	additional code from build_class_array_ref, and use optional
	gfc_typespec pointer argument.
	(gfc_trans_scalar_assign): Make use of pre and post blocks for
	all class expressions.
	* trans.c (get_array_span): For unlimited polymorphic exprs
	multiply the span by the value of the _len field.
	(gfc_build_spanned_array_ref): New function.
	(gfc_build_array_ref): Call gfc_build_spanned_array_ref and
	eliminate repeated code.
	* trans.h: Add arg to gfc_find_and_cut_at_last_class_ref and
	add prototype for gfc_build_spanned_array_ref.

2021-04-14  Martin Liska  <mliska@suse.cz>

	* intrinsic.texi: The table has first column empty and it makes
	trouble when processing makeinfo --xml output.

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.

2021-04-03  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99818
	* interface.c (compare_parameter): The codimension attribute is
	applied to the _data field of class formal arguments.

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

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

2021-03-28  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99602
	* trans-expr.c (gfc_conv_procedure_call): Use the _data attrs
	for class expressions and detect proc pointer evaluations by
	the non-null actual argument list.

2021-03-27  Steve Kargl  <kargl@gcc.gnu.org>

	* misc.c (gfc_typename): Fix off-by-one in buffer sizes.

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.

2021-03-24  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>

	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.

2021-03-22  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  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* frontend-passes.c (inline_limit_check): Add rank_a
	argument. If a is rank 1, set the second dimension to 1.
	(inline_matmul_assign): Pass rank_a argument to inline_limit_check.
	(call_external_blas): Likewise.

2021-03-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/99345
	* frontend-passes.c (doloop_contained_procedure_code):
	Properly handle EXEC_IOLENGTH.

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.

2021-03-14  Harald Anlauf  <anlauf@gmx.de>
	    Paul Thomas  <pault@gcc.gnu.org>

	* trans-expr.c (gfc_conv_procedure_call): Fix runtime checks for
	CLASS arguments.
	* trans-intrinsic.c (gfc_conv_intrinsic_size): Likewise.

2021-03-13  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/99125
	* trans-array.c (gfc_conv_expr_descriptor): For deferred length
	length components use the ss_info string length instead of
	gfc_get_expr_charlen. Make sure that the deferred string length
	is a variable before assigning to it. Otherwise use the expr.
	* trans-expr.c (gfc_conv_string_length): Make sure that the
	deferred string length is a variable before assigning to it.

2021-03-12  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99514
	* resolve.c (resolve_symbol): Accept vars which are in DATA
	and hence (either) implicit SAVE (or in common).

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.

2021-03-10  Tobias Burnus  <tobias@codesourcery.com>

	* intrinsic.texi (MIN): Correct 'maximum' to 'minimum'.

2021-03-10  Eric Botcazou  <ebotcazou@adacore.com>

	PR fortran/96983
	* trans-intrinsic.c (build_round_expr): Do not implicitly assume
	that __float128 is the 128-bit floating-point type.

2021-03-08  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/49278
	* data.c (gfc_assign_data_value): Reject variable with PARAMETER
	attribute in DATA statement.

2021-03-05  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99355
	PR fortran/57871
	* invoke.texi (-freal{4,8}-real-*): Extend description.
	* primary.c (match_real_constant): Also promote real literals
	with '_kind' number.

2021-03-04  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/99355
	* decl.c (gfc_match_old_kind_spec, gfc_match_kind_spec): Avoid
	redoing kind conversions.
	* primary.c (match_real_constant): Likewise.

2021-02-28  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/99303
	* openmp.c (gfc_omp_requires_add_clause): Fix up diagnostic message
	wordings.
	(resolve_omp_clauses): Likewise.

2021-02-28  Jakub Jelinek  <jakub@redhat.com>

	PR fortran/99300
	* frontend-passes.c (doloop_code): Replace double space in diagnostics
	with a single space.

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

	PR fortran/98342
	* trans-expr.c (gfc_conv_derived_to_class): Add optional arg.
	'derived_array' to hold the fixed, parmse expr in the case of
	assumed rank formal arguments. Deal with optional arguments.
	(gfc_conv_procedure_call): Null 'derived' array for each actual
	argument. Add its address to the call to gfc_conv_derived_to_
	class. Access the 'data' field of scalar descriptors before
	deallocating allocatable components. Also strip NOPs before the
	calls to gfc_deallocate_alloc_comp. Use 'derived' array as the
	input to gfc_deallocate_alloc_comp if it is available.
	* trans.h : Include the optional argument 'derived_array' to
	the prototype of gfc_conv_derived_to_class. The default value
	is NULL_TREE.

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>

	PR fortran/99206
	* simplify.c (gfc_simplify_reshape): Set string length for
	character arguments.

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.

2021-02-21  Harald Anlauf  <anlauf@gmx.de>

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

2021-02-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/98686
	* match.c (gfc_match_namelist): If BT_UNKNOWN, check for
	IMPLICIT NONE and and issue an error, otherwise set the type
	to its IMPLICIT type so that any subsequent use of objects will
	will confirm their types.

2021-02-19  Harald Anlauf  <anlauf@gmx.de>

	* symbol.c (gfc_add_flavor): Reverse order of conditions.

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

	PR fortran/99010
	* dependency.c (gfc_dep_resolver): Fix coarray handling.

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

	PR fortran/99146
	* interface.c:

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

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

2021-02-17  Julian Brown  <julian@codesourcery.com>

	* openmp.c (resolve_omp_clauses): Disallow selecting components
	of arrays of derived type.

2021-02-17  Julian Brown  <julian@codesourcery.com>

	* trans-openmp.c (gfc_trans_omp_clauses): Handle element selection
	for arrays of derived types.

2021-02-16  Tobias Burnus  <tobias@codesourcery.com>

	* expr.c (gfc_is_simplify_contiguous): Handle REF_INQUIRY, i.e.
	%im and %re which are EXPR_VARIABLE.
	* openmp.c (resolve_omp_clauses): Diagnose %re/%im explicitly.

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>

	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>

	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>

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

2021-02-11  Tobias Burnus  <tobias@codesourcery.com>

	* intrinsic.texi (FINDLOC): Add 'MASK' to argument table.
	(MAXLOC, MAXVAL, MINLOC, MINVAL): For 'MASK', remove 'an
	array' as scalars are also permitted.

2021-02-10  Julian Brown  <julian@codesourcery.com>

	PR fortran/98979
	* openmp.c (resolve_omp_clauses): Omit OpenACC update in
	contiguity check and stride-specified error.

2021-02-04  Julian Brown  <julian@codesourcery.com>

	* openmp.c (resolve_omp_clauses): Omit OpenACC update in
	contiguity check and stride-specified error.

2021-02-04  Julian Brown  <julian@codesourcery.com>

	* trans-openmp.c (gfc_trans_omp_clauses): Use class_pointer attribute
	for BT_CLASS.

2021-02-04  Julian Brown  <julian@codesourcery.com>

	* trans-openmp.c (gfc_trans_omp_clauses): Fix dereferencing for
	BT_DERIVED members.

2021-02-04  Tobias Burnus  <tobias@codesourcery.com>

	* openmp.c (resolve_omp_clauses): Explicitly diagnose
	substrings as not permitted.

2021-02-03  Jeff Law  <law@redhat.com>

	* intrinsic.texi (ANINT): Fix typo.

2021-02-03  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/98913
	* dependency.c (gfc_dep_resolver): Treat local access
	to coarrays like any array access in dependency analysis.

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).

2021-01-27  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/93924
	PR fortran/93925
	* trans-expr.c (gfc_conv_procedure_call): Suppress the call to
	gfc_conv_intrinsic_to_class for unlimited polymorphic procedure
	pointers.
	(gfc_trans_assignment_1): Similarly suppress class assignment
	for class valued procedure pointers.

2021-01-27  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/98472
	* trans-array.c (gfc_conv_expr_descriptor): Include elemental
	procedure pointers in the assert under the comment 'elemental
	function' and eliminate the second, spurious assert.

2021-01-25  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/70070
	* data.c (create_character_initializer): Check substring indices
	against bounds.
	(gfc_assign_data_value): Catch error returned from
	create_character_initializer.

2021-01-25  Tobias Burnus  <tobias@codesourcery.com>

	* intrinsic.texi (CO_BROADCAST, CO_MIN, CO_REDUCE, CO_SUM): Fix typos.

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..

2021-01-22  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/98565
	* trans-intrinsic.c (gfc_conv_associated): Do not add a _data
	component for scalar class function targets. Instead, fix the
	function result and access the _data from that.

2021-01-21  Jorge D'Elia  <jdelia@cimec.unl.edu.ar>

	* intrinsic.texi (CO_MAX): Fix typo.

2021-01-21  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/96320
	* decl.c (gfc_match_modproc): It is not an error to find a
	module procedure declaration within a contains block.
	* expr.c (gfc_check_vardef_context): Pure procedure result is
	assignable. Change 'own_scope' accordingly.
	* resolve.c (resolve_typebound_procedure): A procedure that
	has the module procedure attribute is almost certainly a
	module procedure, whatever its interface.

2021-01-19  Tobias Burnus  <tobias@codesourcery.com>

	PR fortran/98476
	* openmp.c (resolve_omp_clauses): Change use_device_ptr
	to use_device_addr for unless type(c_ptr); check all
	list item for is_device_ptr.

2021-01-16  Kwok Cheung Yeung  <kcy@codesourcery.com>

	* dump-parse-tree.c (show_omp_clauses): Handle detach clause.
	* frontend-passes.c (gfc_code_walker): Walk detach expression.
	* gfortran.h (struct gfc_omp_clauses): Add detach field.
	(gfc_c_intptr_kind): New.
	* openmp.c (gfc_free_omp_clauses): Free detach clause.
	(gfc_match_omp_detach): New.
	(enum omp_mask1): Add OMP_CLAUSE_DETACH.
	(enum omp_mask2): Remove OMP_CLAUSE_DETACH.
	(gfc_match_omp_clauses): Handle OMP_CLAUSE_DETACH for OpenMP.
	(OMP_TASK_CLAUSES): Add OMP_CLAUSE_DETACH.
	(resolve_omp_clauses): Prevent use of detach with mergeable and
	overriding the data sharing mode of the event handle.
	* trans-openmp.c (gfc_trans_omp_clauses): Handle detach clause.
	* trans-types.c (gfc_c_intptr_kind): New.
	(gfc_init_kinds): Initialize gfc_c_intptr_kind.
	* types.def
	(BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT): Rename
	to...
	(BT_FN_VOID_OMPFN_PTR_OMPCPYFN_LONG_LONG_BOOL_UINT_PTR_INT_PTR):
	...this.  Add extra argument.

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.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/98661
	* resolve.c (resolve_component): Derived type components with
	ALLOCATABLE or POINTER attribute shall have a deferred shape.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

	Revert:
	2021-01-14  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/98661
	* resolve.c (resolve_component): Derived type components with
	ALLOCATABLE or POINTER attribute shall have a deferred shape.

2021-01-14  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/98661
	* resolve.c (resolve_component): Derived type components with
	ALLOCATABLE or POINTER attribute shall have a deferred shape.

2021-01-08  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/93794
	* trans-expr.c (gfc_conv_component_ref): Remove the condition
	that deferred character length components only be allocatable.

2021-01-08  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/98458
	* simplify.c (is_constant_array_expr): If an array constructor
	expression has elements other than constants or structures, try
	fixing the expression with gfc_reduce_init_expr. Also, if shape
	is NULL, obtain the array size and set it.

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

	PR fortran/93701
	* resolve.c (find_array_spec): Put static prototype for
	resolve_assoc_var before this function and call for associate
	variables.

2021-01-06  Harald Anlauf  <anlauf@gmx.de>

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

2021-01-04  Martin Liska  <mliska@suse.cz>

	* ChangeLog-2018: Remove duplicate ChangeLog entries.

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

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

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

	* 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.

2021-01-01  Jakub Jelinek  <jakub@redhat.com>

	* ChangeLog-2020: Rotate ChangeLog.  New file.


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