2026-05-28  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/93727
	* io/write.c (write_ex): Replace simple truncation with
	rounding-aware logic respecting dtp round_status.  Add carry
	propagation and integer-digit normalization.
	* io/write_float.def: Change use of GFC_UINTEGER_8 to
	long long unsigned.

2026-05-25  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/93727
	* io/write_float.def (get_float_hex_string): Fix kind=8 frac_part
	from unsigned long to GFC_UINTEGER_8 to correct truncated hex
	output and IEEE_INVALID_FLAG on ILP32 targets.  Update kind=10
	and kind=16 to use GFC_UINTEGER_8 for consistency.
	Assisted by: Claude Sonnet 4.6

2026-05-24  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
	    Harald Anlauf  <anlauf@gcc.gnu.org>

	PR fortran/93727
	* io/format.c (format_lex): Add new FMT_EX token handing.
	(parse_format_list): Likewise.
	(next_format): Likewise
	* io/io.h (write_ex): Add prototype for new function.
	(internal_proto): Likewise.
	* io/transfer.c (formatted_transfer_scalar_write): Use FMT_EX token.
	* io/write.c (write_default_char4): White space fix.
	(write_a): White space fix.
	(write_boz): White space fix.
	(write_decimal): White space fix.
	(otoa_big): White space fix.
	(write_character): White space fix.
	(write_float_0): White space fix.
	(write_ex): New function which uses the new helper function
	get_float_hex_string() to build the hexadecimal float format for
	output.
	(write_real): White space fix.
	(write_complex): White space fix.
	(nml_write_obj): White space fix.
	(namelist_write): White space fix.
	* io/write_float.def: Add defines to handle the various forms of
	KIND=16 floats. These handle the selection of the appropriate versions
	of the frexp, fabs, and scalbn used to extract the components of the
	floating point values.
	(GFC_REAL_16_FREXP): New define.
	(GFC_REAL_16_FABS): New define.
	(GFC_REAL_16_SCALBN): New define.
	(get_float_hex_string): New function which exatracts the bits and builds
	the basic hexadecimal format strings into a buffer. The buffer is provided
	by the caller write_ex.
	(build_float_string): White space fix.
	(quadmath_snprintf): White space fix.
	(determine_en_precision): White space fix.

2026-05-22  Tobias Burnus  <tburnus@baylibre.com>

	* m4/matmul.m4: Fix comment typo.
	* generated/matmul_c10.c: Regenerate.
	* generated/matmul_c16.c: Regenerate.
	* generated/matmul_c17.c: Regenerate.
	* generated/matmul_c4.c: Regenerate.
	* generated/matmul_c8.c: Regenerate.
	* generated/matmul_i1.c: Regenerate.
	* generated/matmul_i16.c: Regenerate.
	* generated/matmul_i2.c: Regenerate.
	* generated/matmul_i4.c: Regenerate.
	* generated/matmul_i8.c: Regenerate.
	* generated/matmul_r10.c: Regenerate.
	* generated/matmul_r16.c: Regenerate.
	* generated/matmul_r17.c: Regenerate.
	* generated/matmul_r4.c: Regenerate.
	* generated/matmul_r8.c: Regenerate.

2026-05-16  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* caf/shmem/sync.h (lock_t): Rename to caf_shmem_lock_t.
	* caf/shmem.c: Adapt uses.

2026-05-08  Harald Anlauf  <anlauf@gmx.de>

	PR libfortran/125087
	* io/format.c (free_format_data): Change argument from pointer to
	format_data to pointer to pointer of object.
	(free_format_hash_table): Adjust argument passed to
	free_format_data.
	(save_parsed_format): Likewise.
	* io/format.h (free_format_data): Adjust prototype.
	* io/transfer.c (st_read_done_worker): Adjust argument passed to
	free_format_data.
	(st_write_done_worker): Likewise.

2026-05-06  Harald Anlauf  <anlauf@gmx.de>

	PR libfortran/125095
	* io/list_read.c (read_logical): Eat comments in namelist read mode.
	(read_integer): Likewise.
	(read_character): Likewise.
	(read_complex): Likewise.
	(read_real): Likewise.

2026-05-05  Pietro Monteiro  <pietro@sociotechnical.xyz>

	* Makefile.in: Regenerate.
	* acinclude.m4: Delete LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY.
	* aclocal.m4: Regenerate.
	* configure: Likewise.
	* configure.ac: Use GCC_CHECK_ATTRIBUTE_VISIBILITY istead of
	LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY.

2026-04-17  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR libfortran/120431
	* m4/spread.m4: Fix scalar source case with ncopies < 0.
	* generated/spread_c10.c: Regenerated.
	* generated/spread_c16.c: Ditto.
	* generated/spread_c17.c: Ditto.
	* generated/spread_c4.c: Ditto.
	* generated/spread_c8.c: Ditto.
	* generated/spread_i1.c: Ditto.
	* generated/spread_i16.c: Ditto.
	* generated/spread_i2.c: Ditto.
	* generated/spread_i4.c: Ditto.
	* generated/spread_i8.c: Ditto.
	* generated/spread_r10.c: Ditto.
	* generated/spread_r16.c: Ditto.
	* generated/spread_r17.c: Ditto.
	* generated/spread_r4.c: Ditto.
	* generated/spread_r8.c: Ditto.

2026-04-07  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/124543
	* io/inquire.c (inquire_via_unit): Change the returned
	encoding value to 'DEFAULT' when not specified in the OPEN
	statement.

2026-04-04  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/124543
	* io/inquire.c (inquire_via_unit): Adjust the logic to
	treat formatted vs unformatted correctly.

2026-03-30  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/124543
	* io/inquire.c (inquire_via_unit): Fix return value for
	NAMED. Add check for ACTION. Fix return values for
	ENCODING, PENDING, READ, WRITE, READWRITE.
	(inquire_via_filename): Add checks for ACTION, DELIM,
	ASYNCHRONOUS, and PENDING. Fix return value for
	ENCODING.
	* io/unix.c (inquire_access): Change return value from no
	to unknown.

2026-03-22  Christopher Albert  <albert@tugraz.at>

	PR fortran/124512
	* Makefile.am: Adjust the dependencies.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Add new check.

2026-03-06  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR libfortran/124371
	* caf/shmem/supervisor.c (startWorker): Use defined(HAVE_FORK)
	instead of !defined(WIN32) for preprocessor conditional.

2026-03-04  Jakub Jelinek  <jakub@redhat.com>

	PR libfortran/124330
	* caf/shmem/shared_memory.c (shared_memory_set_env): Make buffer
	used by putenv static.
	(shared_memory_init): Likewise.

2026-03-04  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/124330
	* caf/shmem/shared_memory.c (shared_memory_init): Use
	putenv() for HPUX and as a fallback where setenv()
	is not available.

2026-03-03  Mark Wielaard  <mark@klomp.org>

	* config.h.in: Regenerate.
	* configure: Regenerate.

2026-03-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
	    John David Anglin  <danglin@gcc.gnu.org>

	PR fortran/124330
	* caf/shmem/shared_memory.c: Fix filenames for WIN32
	includes.
	(shared_memory_set_env): Use putenv() for HPUX and as
	a fallback where setenv () is not available.
	(NAME_MAX): Replace with SHM_NAME_MAX.
	(SHM_NAME_MAX): Use this to avoid duplicating NAME_MAX
	used elsewhere.
	* caf/shmem/supervisor.c (get_image_num_from_envvar): Add
	a fallback for HPUX. Add additional comment to explain why
	the number of cores is used in lieu of GFORTRAN_NUM_IMAGES.

2026-03-01  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/124286
	* acinclude.m4: Remove LIBGFOR_CHECK_SANE_BUILTIN_CLZL.
	* caf/shmem/allocator.c (next_power_of_two): Use known sane
	builtin.
	* configure: Regenerate.
	* configure.ac: Remove use of LIBGFOR_CHECK_SANE_BUILTIN_CLZL.

2026-02-27  Jakub Jelinek  <jakub@redhat.com>

	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* Makefile.in: Regenerate.

2026-02-27  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/88076
	* caf/shmem/supervisor.c (supervisor_main_loop): Use fprintf
	instead of dprintf.

2026-02-26  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/88076
	* Makefile.in: Regenerate.
	* aclocal.m4: Regenerate.
	* config.h.in: Regenerate.
	* configure: Regenerate.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	* Makefile.am: Only build caf_shmem when pthreads is available.
	* configure.ac: Check for pthreads availability and needed
	flags.

2026-02-26  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/124080
	* caf/shmem/hashmap.c (hash): Use size_t instead of
	uint64.
	(hmiadd): Use size_t instead of ssize_t.
	(scan_inside_lookahead): Likewise.
	(scan_empty): Likewise.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/121429
	* caf/shmem.c (_gfortran_caf_deregister): Add a call to
	sync_team.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/124071
	* caf/shmem.c (_gfortran_caf_form_team): Take free index, when
	computed one is already taken.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/88076
	* Makefile.am: Add new library.
	* Makefile.in: Regenerated
	* acinclude.m4: Add check for reasonable clzl.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Call clzl check.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/shmem.c (_gfortran_caf_finalize): Add a sync on the
	initial team on exit.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/shmem.c (_gfortran_caf_finalize): Ensure all memory is
	freeed.
	* caf/shmem/allocator.c (allocator_shared_malloc): Just assert
	that an index is within its bounds.
	* caf/shmem/shared_memory.c (shared_memory_init): When shared
	memory can not be placed at desired address, exit the image with
	a certain code to let the supervisor restart the image.
	(shared_memory_cleanup): Only the supervisor must unlink the shm
	object.
	* caf/shmem/supervisor.c (GFORTRAN_ENV_IMAGE_RESTARTS_LIMITS):
	New environment variable.
	(get_image_restarts_limit): Get the limit on image restarts
	(accumulates over all) form the environment variable or default
	to 4000.
	(ensure_shmem_initialization): Add error handling.
	(startWorker): Start a single worker/image.
	(kill_all_images): Kill all images.
	(supervisor_main_loop): When a worker/image reports a shared
	memory issue just try to restart it.
	* caf/shmem/thread_support.c (initialize_shared_mutex): Mark
	mutex robust on plattforms that support it.
	(initialize_shared_errorcheck_mutex): Same.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/shmem.c (_gfortran_caf_init): Cleanup thread helper after
	use.
	(_gfortran_caf_finalize): Same.
	(_gfortran_caf_register): Handle lock_t correctly on Windows.
	(GEN_OP): Prevent warnings on non-initialized.
	(_gfortran_caf_lock): Handle lock_t correctly on Windows.
	(_gfortran_caf_unlock): Same.
	(_gfortran_caf_random_init): Fix formatting.
	(_gfortran_caf_form_team): Add more images to counter_barrier.
	* caf/shmem/alloc.c: Use routines from thread_support.
	* caf/shmem/allocator.c (allocator_lock): Same.
	(allocator_unlock): Same.
	* caf/shmem/allocator.h: Same.
	* caf/shmem/collective_subroutine.c (get_collsub_buf): Same.
	* caf/shmem/collective_subroutine.h: Same.
	* caf/shmem/counter_barrier.c (lock_counter_barrier): Same.
	(unlock_counter_barrier): Same.
	(counter_barrier_init): Same.
	(counter_barrier_wait): Same.
	(change_internal_barrier_count): Same.
	(counter_barrier_add): Same.
	(counter_barrier_init_add): Only increase value w/o signaling.
	(counter_barrier_get_count): Use routines from thread_support.
	* caf/shmem/counter_barrier.h: Same.
	(counter_barrier_init_add): New routine.
	* caf/shmem/shared_memory.c: Use windows routines where
	applicable.
	(shared_memory_set_env): Same.
	(shared_memory_get_master): Same.
	(shared_memory_init): Same.
	(shared_memory_cleanup): Same.
	* caf/shmem/shared_memory.h: Use types from thread_support.
	* caf/shmem/supervisor.c: Use windows routines where applicable.
	(get_memory_size_from_envvar): Same.
	(ensure_shmem_initialization): Same.
	(supervisor_main_loop): Use windows process start on windows
	without fork().
	* caf/shmem/supervisor.h: Use types from thread_support.
	* caf/shmem/sync.c (lock_table): Use routines from thread_support.
	(unlock_table): Same.
	(sync_init): Same.
	(sync_init_supervisor): Same.
	(sync_table): Same.
	(lock_event): Same.
	(unlock_event): Same.
	(event_post): Same.
	(event_wait): Same.
	* caf/shmem/sync.h: Use types from thread_support.
	* caf/shmem/teams_mgmt.c (update_teams_images): Use routines from
	thread_support.
	* caf/shmem/thread_support.c: Add synchronisation primitives for
	windows.
	(smax): Windows only: Max for size_t.
	(get_handle): Windows only: Get the windows handle for a given
	id or create a new one, if it does not exist.
	(get_mutex): Windows only: Shortcut for getting a windows mutex
	handle.
	(get_condvar): Windows only: Same, but for condition variable.
	(thread_support_init_supervisor): Windows only: Clear tracker of
	allocated handle ids.
	(caf_shmem_mutex_lock): Windows only: Implememtation of lock,
	(caf_shmem_mutex_trylock): Windows only: trylock, and
	(caf_shmem_mutex_unlock): Windows only:  unlock for Windows.
	(bm_is_set): Windows only: Check a bit is set in a mask.
	(bm_clear_bit): Windows only: Clear a bit in a mask.
	(bm_set_mask): Windows only: Set all bits in a mask.
	(bm_is_none): Windows only: Check if all bits are cleared.
	(caf_shmem_cond_wait): Windows only: Condition variable
	implemenation fro wait,
	(caf_shmem_cond_broadcast): Windows only: broadcast, and
	(caf_shmem_cond_signal): Windows only: signal on Windows.
	(caf_shmem_cond_update_count): Windows only: Need to know the
	images participating in a condition variable.
	(thread_support_cleanup): Windows only: Clean up the handles on
	exit.
	* caf/shmem/thread_support.h: Conditionally compile the types
	as required for Windows and other OSes.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/shmem/allocator.c (next_power_of_two): Use sane clzl
	implementation or alternative.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/88076
	* caf/libcaf.h (LIBCAF_H): Remove unused header inclusions.
	* caf/caf_error.c: New file.
	* caf/caf_error.h: New file.
	* caf/shmem.c: New file.
	* caf/shmem/alloc.c: New file.
	* caf/shmem/alloc.h: New file.
	* caf/shmem/allocator.c: New file.
	* caf/shmem/allocator.h: New file.
	* caf/shmem/collective_subroutine.c: New file.
	* caf/shmem/collective_subroutine.h: New file.
	* caf/shmem/counter_barrier.c: New file.
	* caf/shmem/counter_barrier.h: New file.
	* caf/shmem/hashmap.c: New file.
	* caf/shmem/hashmap.h: New file.
	* caf/shmem/shared_memory.c: New file.
	* caf/shmem/shared_memory.h: New file.
	* caf/shmem/supervisor.c: New file.
	* caf/shmem/supervisor.h: New file.
	* caf/shmem/sync.c: New file.
	* caf/shmem/sync.h: New file.
	* caf/shmem/teams_mgmt.c: New file.
	* caf/shmem/teams_mgmt.h: New file.
	* caf/shmem/thread_support.c: New file.
	* caf/shmem/thread_support.h: New file.

2026-02-26  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/libcaf.h (_gfortran_caf_failed_images): Team attribute is
	used now in some libs.
	(_gfortran_caf_image_status): Same.
	(_gfortran_caf_stopped_images): Same.
	* caf/single.c (caf_internal_error): Use correct printf function
	to handle va_list.

2026-01-13  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/123012
	* io/list_read.c (read_character): Add new check after
	get_string and provide better comments.

2026-01-11  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/123012
	* io/list_read.c (read_character): Add new check when no
	quate is provided and the character string is digits only.

2026-01-09  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* io/io.h: Change type of self to intptr_t.
	* io/async.h (LOCK_UNIT): Cast __gthread_self () to intptr_t.
	(TRYLOCK_UNIT): Likewise.
	(OWN_THREAD_ID): Likewise.

2026-01-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* io/async.h: DEBUG_ASYNC needs gtreads support.
	(LOCK_UNIT): Only lock when there is pthreads support and it is active.
	Otherwise, just set unit->self to 1.
	(UNLOCK_UNIT): Only unlock when there is pthreads support and it is active.
	Otherwise, just set unit->self to 0.
	(TRYLOCK_UNIT): Only try locking when thee is pthreads support and it is
	active.  Otherwise, return unit->self.
	(OWN_THREAD_ID): New macro.
	* io/io.h: gfc_unit's self is an int when there is no gthreads support.
	* io/unit.c (check_for_recursive): Check for equality of unit which
	locked to OWN_THREAD_ID.

2026-01-06  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* io/async.h (UNLOCK_UNIT): New macro.
	(TRYLOCK_UNIT): New macro.
	(LOCK_UNIT): New macro.
	* io/io.h: Delete prototype for unused stash_internal_unit.
	(check_for_recursive): Add prototype for this new function.
	* io/transfer.c (data_transfer_init): Add call to new
	check_for_recursive.
	* io/unit.c (delete_unit): Fix comment.
	(check_for_recursive): Add new function.
	(init_units): Use new macros.
	(close_unit_1): Likewise.
	(unlock_unit): Likewise.
	* io/unix.c (flush_all_units_1): Likewise.
	(flush_all_units): Likewise.
	* runtime/error.c (translate_error): : Add translation for
	"Recursive I/O not allowed runtime error message.

2026-01-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	Revert:
	2026-01-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/119136
	* io/io.h: Delete prototype for unused stash_internal_unit.
	(check_for_recursive): Add prototype for this new function.
	* io/transfer.c (data_transfer_init): Add call to new
	check_for_recursive.
	* io/unit.c (delete_unit): Fix comment.
	(check_for_recursive): Add new function.
	* runtime/error.c (translate_error): Add translation for
	"Recursive I/O not allowed runtime error message.

2026-01-01  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/119136
	* io/io.h: Delete prototype for unused stash_internal_unit.
	(check_for_recursive): Add prototype for this new function.
	* io/transfer.c (data_transfer_init): Add call to new
	check_for_recursive.
	* io/unit.c (delete_unit): Fix comment.
	(check_for_recursive): Add new function.
	* runtime/error.c (translate_error): Add translation for
	"Recursive I/O not allowed runtime error message.


Copyright (C) 2026 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.