gcc/libgfortran/ChangeLog

2016-11-03  Fritz Reese <fritzoreese@gmail.com>

	* io/io.h (IOPARM_DT_DEFAULT_EXP): New flag bit.
	* io/list_read.c (parse_real, read_real): Allow omission of exponent
	with IOPARM_DT_DEFAULT_EXP.
	* io/read.c (read_f): Ditto.

2016-10-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/54679
	* io/format.c (parse_format_list): Adjust checks for FMT_L to
	treat a zero width as an extension, giving warnings or error
	as appropriate. Improve messages.

2016-10-30  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/78123
	* io/transfer.c (formatted_transfer_scalar_read): Clear seen_eor
	only if we have tabbed to left of current position.

2016-10-26  Fritz Reese  <fritzoreese@gmail.com>

	* libgfortran.h (IOPARM_OPEN_HAS_READONLY, IOPARM_OPEN_HAS_SHARE,
	IOPARM_OPEN_HAS_CC): New for READONLY, SHARE, and CARRIAGECONTROL.
	* io/close.c (st_close): Support READONLY.
	* io/io.h (st_parameter_open, unit_flags): Support SHARE,
	CARRIAGECONTROL, and READONLY.
	* io/open.c (st_open): Ditto.
	* io/transfer.c (data_transfer_init): Ditto.
	* io/io.h (st_parameter_dt): New member 'cc' for CARRIAGECONTROL.
	* io/write.c (write_check_cc, write_cc): New functions for
	CARRIAGECONTROL.
	* io/transfer.c (next_record_cc): Ditto.
	* io/file_pos.c (st_endfile): Support SHARE and CARRIAGECONTROL.
	* io/io.h (st_parameter_inquire): Ditto.
	* io/open.c (edit_modes, new_unit): Ditto.
	* io/inquire.c (inquire_via_unit, inquire_via_filename): Ditto.
	* io/io.h (unit_share, unit_cc, cc_fortran, IOPARM_INQUIRE_HAS_SHARE,
	IOPARM_INQUIRE_HAS_CC): New for SHARE and CARRIAGECONTROL.
	* io/open.c (share_opt, cc_opt): Ditto.
	* io/read.c (read_x): Support CARRIAGECONTROL.
	* io/transfer.c (read_sf, next_record_r, next_record_w): Ditto.
	* io/write.c (list_formatted_write_scalar, write_a): Ditto.
	* io/unix.h (close_share): New prototype.
	* io/unix.c (open_share, close_share): New functions to handle SHARE.
	* io/unix.c (open_external): Handle READONLY. Call open_share.
	* io/close.c (st_close): Call close_share.

2016-10-24  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/77828
	* io/io.h (st_parameter_dt): Reorder for readability and sanity.
	* io/transfer.c (data_transfer_init): Remove TODO and enable the
	runtime error message, rec= specifier not allowed in STREAM
	access.
	* libtool-version: Bump major version of libgfortran to 4.

2016-10-21  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/78055
	* io/io.h (st_parameter_dt): Restore GFC_IO_INT to maintain
	alignment.

2016-10-20  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	* io/transfer.c (finalize_transfer): Free format data in child
	procedures. (st_read_done, st_write_done): Don't free format
	hash table.

2016-10-17  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/48298
	* io/io.h: Move size_used from dtp to unit structure. Add bool
	has_size to unit structure.
	* io/read.c (read_x): Use has_size and size_used.
	* io/transfer.c (read_sf_internal,read_sf,read_block_form,
	read_block_form4): Likewise.
	(data_transfer_init): If parent, initialize the size variables.
	(finalize_transfer): Set the size variable using size_used in
	gfc_unit. (write_block): Delete bogus/dead code.

2016-10-16  Janne Blomqvist  <jb@gcc.gnu.org>

	PR libfortran/48587
	* io/transfer.c (data_transfer_init): Improve error message,
	remove redundant check.

2016-10-15  Janne Blomqvist  <jb@gcc.gnu.org>

        PR libfortran/48587
        * io/io.h (get_unique_unit_number): Remove prototype.
        (newunit_alloc): New prototype.
        * io/open.c (st_open): Call newunit_alloc.
        * io/unit.c (newunits,newunit_size,newunit_lwi): New static
        variables.
        (GFC_FIRST_NEWUNIT): Rename to NEWUNIT_START.
        (next_available_newunit): Remove variable.
        (get_unit): Call newunit_alloc, don't try to create negative
        external unit.
        (close_unit_1): Call newunit_free.
        (close_units): Free newunits array.
        (get_unique_number): Remove function.
        (newunit_alloc): New function.
        (newunit_free): New function.
        * io/transfer.c (data_transfer_init): Check for invalid unit
        number.

2016-10-09  Janne Blomqvist  <jb@gcc.gnu.org>

        PR libfortran/67585
        * io/io.h: TEMP_FAILURE_RETRY: Define macro if not found.
        * io/unix.c (raw_read): Handle EINTR.
        (raw_write): Check for return value -1.
        (raw_seek): Handle EINTR.
        (raw_tell): Likewise.
        (raw_size): Likewise.
        (raw_truncate): Likewise.
        (raw_close): Likewise.
        (buf_flush): Call raw_seek instead of lseek.
        (buf_read): Likewise.
        (buf_write): Likewise.
        (fd_to_stream): Handle EINTR.
        (tempfile_open): Likewise.
        (regular_file2): Likewise.
        (compare_file_filename): Likewise.
        (find_file): Likewise.
        (inquire_sequential): Likewise.
        (inquire_direct): Likewise.
        (inquire_formatted): Likewise.

2016-10-05  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/77868
	* io/inquire.c (inquire_via_unit): NULL guard the check for
	internal unit passed into child IO procedure.

2016-10-04  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	* io/inquire.c (inquire_via_unit): Add check for internal unit
	passed into child IO procedure.

2016-10-01  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/77663
	* caf/single.c (caf_internal_error): Fix not terminating va-list.
	(_gfortran_caf_register): Free memory also when other allocs failed.
	(_gfortran_caf_get_by_ref): Fixed style.
	(send_by_ref): Token is now stored at the correct position preventing
	inaccessible tokens, memory loss and possibly crashes.

2016-09-28  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/77707
	io/transfer.c (next_record): Flush before calculating next_record.
	Correctly calculate.

2016-09-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/48298
	* io/inquire.c (inquire_via_unit): Adjust error check for the
	two possible internal unit KINDs.
	* io/io.h: Adjust defines for is_internal_unit and
	is_char4_unit. (gfc_unit): Add internal unit data to structure.
	(get_internal_unit): Change declaration to set_internal_unit.
	(free_internal_unit): Change name to stash_internal_unit_number.
	(get_unique_unit_number): Adjust parameter argument.
	Define IOPARM_DT_HAS_UDTIO. (gfc_saved_unit): New structure.
	* io/list_read.c (next_char_internal): Use is_char4_unit.
	* io/open.c (st_open): Adjust call to get_unique_unit_number.
	* io/transfer.c (write_block): Use is_char4_unit.
	(data_transfer_init): Update check for unit numbers.
	(st_read_done): Free the various allocated memories used for the
	internal units and stash the negative unit number and pointer to unit
	structure to allow reuse. (st_write_done): Likewise stash the freed
	unit.
	* io/unit.c: Create a fixed size buffer of 16 gfc_saved_unit's to use
	as a stack to save newunit unit numbers and unit structure for reuse.
	(get_external_unit): Change name to get_gfc_unit to better
	reflect what it does. (find_unit): Change call to get_gfc_unit.
	(find_or_create_unit): Likewise. (get_internal_unit): Change
	name to set_internal_unit. Move internal unit from the dtp
	structure to the gfc_unit structure so that it can be passed to
	child I/O statements through the UNIT.
	(free_internal_unit): Change name to stash_internal_unit_number.
	Push the common.unit number onto the newunit stack, saving it
	for possible reuse later. (get_unit): Set the internal unit
	KIND. Use get_unique_unit_number to get a negative unit number
	for the internal unit. Use get_gfc_unit to get the unit structure
	and use set_internal_unit to initialize it.
	(init_units): Initialize the newunit stack.
	(get_unique_unit_number): Check the stack for an available unit
	number and use it. If none there get the next most negative
	number. (close_units): Free any unit structures pointed to from the save
	stack.

2016-09-21  Janne Blomqvist  <jb@gcc.gnu.org>

	* intrinsics/random.c (getosrandom): Use rand_s() on
	MinGW-w64. Fix bounds overflow in fallback code.

2016-09-19  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/libcaf.h: Add caf_reference_type.
	* caf/mpi.c: Adapted signature of caf_register().
	* caf/single.c (struct caf_single_token): Added to keep the pointer
	to the memory registered and array descriptor.
	(caf_internal_error): Added convenience interface.
	(_gfortran_caf_register): Adapted to work with caf_single_token and
	return memory in the array descriptor.
	(_gfortran_caf_deregister): Same.
	(assign_char1_from_char4): Fixed style.
	(convert_type): Fixed incorrect conversion.
	(_gfortran_caf_get): Adapted to work with caf_single_token.
	(_gfortran_caf_send): Same.
	(_gfortran_caf_sendget): Same.
	(copy_data): Added to stop repeating it in all _by_ref functions.
	(get_for_ref): Recursive getting of coarray data using a chain of
	references.
	(_gfortran_caf_get_by_ref): Driver for computing the memory needed for
	the get and checking properties of the operation.
	(send_by_ref): Same as get_for_ref but for sending data.
	(_gfortran_caf_send_by_ref): Same like caf_get_by_ref but for sending.
	(_gfortran_caf_sendget_by_ref): Uses get_by_ref and send_by_ref to
	implement sendget for reference chains.
	(_gfortran_caf_atomic_define): Adapted to work with caf_single_token.
	(_gfortran_caf_atomic_ref): Likewise.
	(_gfortran_caf_atomic_cas): Likewise.
	(_gfortran_caf_atomic_op): Likewise.
	(_gfortran_caf_event_post): Likewise.
	(_gfortran_caf_event_wait): Likewise.
	(_gfortran_caf_event_query): Likewise.
	(_gfortran_caf_lock): Likewise.
	(_gfortran_caf_unlock): Likewise.

2016-09-09  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/77507
 	* ieee/ieee_arithmetic.F90 (IEEE_VALUE_4,IEEE_VALUE_8,IEEE_VALULE_10,
	IEEE_VALUE_16):  Use correct keyword.

2016-09-06  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/77393
	* io/write_float.def (build_float_string): Recognize when the
	result will not fit in the user provided, star fill, and exit
	early.

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/77393
	* io/write.c (kind_from_size): New function to calculate required buffer
	size based on kind type. (select_buffer, select_string): Use new
	function. (write_float_0, write_real, write_real_g0, write_complex):
	Adjust calls to pass parameters needed by new function.

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
	Paul Thomas  <pault@gcc.gnu.org>

	PR libgfortran/48298
	* gfortran.map : Flag _st_set_nml_dtio_var and
	_gfortran_transfer_derived.
	* io/format.c (format_lex): Detect DTIO formatting.
	(parse_format_list): Parse the DTIO format.
	(next_format): Include FMT_DT.
	* io/format.h : Likewise. Add structure 'udf' to structure
	'fnode' to carry the IOTYPE string and the 'vlist'.
	* io/io.h : Add prototypes for the two types of DTIO subroutine
	and a typedef for gfc_class. Also, add to 'namelist_type'
	fields for the pointer to the DTIO procedure and the vtable.
	Add fields to struct st_parameter_dt for pointers to the two
	types of DTIO subroutine. Add to gfc_unit DTIO specific fields.
	(internal_proto): Add prototype for 'read_user_defined' and
	'write_user_defined'.
	* io/list_read.c (check_buffers): Use the 'current_unit' field.
	(unget_char): Likewise.
	(eat_spaces): Likewise.
	(list_formatted_read_scalar): For case BT_CLASS, call the DTIO
	procedure.
	(nml_get_obj_data): Likewise when DTIO procedure is present,.
	* io/transfer.c : Export prototypes for 'transfer_derived' and
	'transfer_derived_write'.
	(unformatted_read): For case BT_CLASS, call the DTIO procedure.
	(unformatted_write): Likewise.
	(formatted_transfer_scalar_read): Likewise.
	(formatted_transfer_scalar_write: Likewise.
	(transfer_derived): New function.
	(data_transfer_init): Set last_char if no child_dtio.
	(finalize_transfer): Return if child_dtio set.
	(st_write_done): Add condition for child_dtio not set.
	Add extra arguments for st_set_nml_var prototype.
	(set_nml_var): New function that contains the contents of the
	old version of st_set_nml_var. Also sets the 'dtio_sub' and
	'vtable' fields of the 'nml' structure.
	(st_set_nml_var): Now just calls set_nml_var with 'dtio_sub'
	and 'vtable' NULL.
	(st_set_nml_dtio_var): New function that calls set_nml_var.
	* io/unit.c (get_external_unit): If the found unit child_dtio
	is non zero, don't do any mutex locking/unlocking.  Just
	return the unit.
	* io/unix.c (tempfile_open): Revert to C style comment.
	* io/write.c (list_formatted_write_scalar): Do the DTIO call.
	(nml_write_obj): Add BT_CLASS and do the DTIO call.

2016-08-29  Nathan Sidwell  <nathan@acm.org>

	* configure.ac (nvptx-*): Hardwire newlib.
	* configure: Rebuilt.

2016-08-19  Janne Blomqvist  <jb@gcc.gnu.org>

	* intrinsics/random.c (xor_keys): New array with "secret" keys.
	(scramble_seed): XOR given seed with xor_keys array rather than
	shuffling bytes.
	(unscramble_seed): Remove function.
	(random_seed_i4): Use new scramble_seed.
	(random_seed_i8): Likewise.

2016-08-19  Janne Blomqvist  <jb@gcc.gnu.org>

	* intrinsics/random.c (master_init): New variable.
	(init_rand_state): Move below getosrandom (), maybe initialize
	master_state.
	(random_seed_i4): If called with no arguments, set master_init to
	false, and reinitialize. If called with PUT=, set master_init to
	true.
	(random_seed_i8): Likewise.

2016-08-11  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* intrinsics/random.c: Include <stdlib.h>.

2016-08-11  Janne Blomqvist  <jb@gcc.gnu.org>

	* intrinsics/random.c: Replace KISS with xorshift1024* using
	per-thread state.
	* runtime/main.c (init): Don't call random_seed_i4.

2016-07-22  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/libcaf.h: Add parameter stat to caf_get() and
	caf_send()'s function prototypes.
	* caf/single.c (_gfortran_caf_get): Implement reporting
	error using stat instead of abort().
	(_gfortran_caf_send): Same.
	(_gfortran_caf_sendget): Use NULL for stat when calling
	caf_send().

2016-06-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/48852
	* io/write.c: Cleaned up whitespace.
	(write_d, write_e, write_f, write_es, write_en): Use new helper
	function write_float_0.
	(write_float_0): New helper function.
	(get_precision, select_buffer, select_string, write_float_string): New
	helper functions used in remaining float writing functions.
	Helper function write_float_string now contains code for writing
	to kind=4 character internal units.
	(write_real): Modified to establish working buffers at this level
	and to 	use new helper functions.
	(write_real_g0): Likewise modified.
	(write_complex): Likewise modified. Gets both float strings before
	output so that final lengths can be determined which allows right
	justifying the complex number with no intervening spaces.
	* io/write_float.def (build_float_string): Renamed from previosly
	output_float, modified to use buffers passed in from higher functions,
	builds a null terminated string of the floating point value. Character
	kind=4 code eliminated.
	(write_infnan): Likewise modified to use incoming buffers and eliminate
	kind=4 related code.
	(OUTPUT_FLOAT_FMT_G): Deleted, functionality moved into FORMAT_FLOAT.
	(FORMAT_FLOAT): Renamed macro from WRITE_FLOAT. Use build_float_string.
	(get_float_string): Renamed from write_float, uses FORMAT_FLOAT macro.
	Buffer allocation removed, now at higher level.

2016-05-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/71123
	* io/list_read (eat_spaces): Eat '\r' as part of spaces.

2016-04-19  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/70684
	* io/list_read (check_buffers): Add '\r' to check for end of line.

2016-03-30  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
	    Dominique d'Humieres  <dominiq@lps.ens.fr>

	PR libgfortran/70235
	* io/write_float.def: Fix PF format for negative values of the scale
	factor.

2016-03-28  Alessandro Fanfarillo  <fanfarillo.gcc@gmail.com>

	* caf/libcaf.h: caf_stop_numeric and caf_stop_str prototype.
	* caf/single.c: _gfortran_caf_stop_numeric and
	_gfortran_caf_stop_str implementation.

2016-02-23  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/69456
	* io/list_read.c (read_real): If digit is missing from exponent issue
	an error. (parse_real): Likewise and adjusted error message to clarify
	it is part of a complex number.
	(nml_read_obj): Bump item count and add comment that this is used to
	identify which item in a namelist read has a problem.

2016-02-17  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/69651
	* io/list_read.c (push_char4): Fix the pointer usage for xrealloc.

2016-02-15  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/69651
	* io/list_read.c: Entire file trailing spaces removed.
	(CASE_SEPARATORS): Remove '!'.
	(is_separator): Add namelist mode as condition with '!'.
	(push_char): Remove un-needed memset. (push_char4): Likewise and remove
	'new' pointer. (eat_separator): Remove un-needed use of notify_std.
	(read_logical): If '!' bang encountered when not in namelist mode got
	bad_logical to give an error. (read_integer): Likewise reject '!'.
	(read_character): Remove condition testing c = '!' which is now inside
	the is_separator macro. (parse_real): Reject '!' unless in namelist mode.
	(read_complex): Reject '!' unless in namelist mode. (read_real): Likewise
	reject '!'.

2016-02-12  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/69668
	* io/list_read.c (read_character): Remove code related to DELIM_NONE.

2016-01-23  John David Anglin  <danglin@gcc.gnu.org>

	PR libfortran/68744
	* runtime/backtrace.c: Include gthr.h.
	(show_backtrace): Use __gthread_active_p() to determine whether threads
	are active.  Return if lbstate is NULL.

2016-01-15  Jakub Jelinek  <jakub@redhat.com>

	* intrinsics/execute_command_line.c (set_cmdstat): Use "%s", msg
	instead of msg to avoid -Wformat-security warning.

2016-01-04  Jakub Jelinek  <jakub@redhat.com>

	Update copyright years.

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