F2018 and F2023 standards added zero width exponents. This required
additional special handing in the process of building formatted
floating point strings.

G formatting uses either F or E formatting as documented in
write_float.def comments. This logic changes the format token from FMT_G
to FMT_F or FMT_E. The new formatting requirements interfere with this
process when a FMT_G float string is being built.  To avoid this, a new
component called 'pushed' is added to the fnode structure to save this
condition.  The 'pushed' condition is then used to bypass portions of
the new ES,E,EN, and D formatting, falling through to the existing
default formatting which is retained.

libgfortran/ChangeLog:
	PR libfortran/111022
	* io/format.c (get_fnode): Update initialization of fnode.
	(parse_format_list): Initialization.
	* io/format.h (struct fnode): Added the new 'pushed' component.
	* io/write.c (select_buffer): Whitespace.
	(write_real): Whitespace.
	(write_real_w0): Adjust logic for the d == 0 condition.
	* io/write_float.def (determine_precision): Whitespace.
	(build_float_string): Calculate width of ..E0 exponents and
	adjust logic accordingly.
	(build_infnan_string): Whitespace.
	(CALCULATE_EXP): Whitespace.
	(quadmath_snprintf): Whitespace.
	(determine_en_precision): Whitespace.

gcc/testsuite/ChangeLog:
	PR libfortran/111022
	* gfortran.dg/fmt_error_10.f: Show D+0 exponent.
	* gfortran.dg/pr96436_4.f90: Show E+0 exponent.
	* gfortran.dg/pr96436_5.f90: Show E+0 exponent.
	* gfortran.dg/pr111022.f90: New test.

This patch try to fix the bug when HAVE_ATOMIC_FETCH_ADD is
not defined in dec_waiting_unlocked function. As io.h does
not include async.h, the WRLOCK and RWUNLOCK macros are
undefined.

libgfortran/ChangeLog:

	* io/io.h (dec_waiting_unlocked): Use
	__gthread_rwlock_wrlock/__gthread_rwlock_unlock or
	__gthread_mutex_lock/__gthread_mutex_unlock functions
	to replace WRLOCK and RWUNLOCK macros.

Signed-off-by: Lipeng Zhu <lipeng.zhu@intel.com>

PR libgfortran/113223

libgfortran/ChangeLog:

	* io/write.c (namelist_write): If internal_unit precede with space.

gcc/testsuite/ChangeLog:

	* gfortran.dg/dtio_25.f90: Update.
	* gfortran.dg/namelist_57.f90: Update.
	* gfortran.dg/namelist_65.f90: Update.

Rotate ChangeLog files for ChangeLogs with yearly cadence.

The linking of libgcc is already present in %(liborig), so the current
situation duplicates libraries. This was not an issue until macOS's new
linker started giving warnings for such cases.

libgfortran/ChangeLog:

	PR libfortran/110651
	* libgfortran.spec.in: Remove duplicate libraries.

Fortran 2018 allows a non-default integer kind for its VALUES argument if
it has a decimal exponent range of at least four.  Update checks, library
implementation and documentation.

gcc/fortran/ChangeLog:

	PR fortran/96580
	* check.cc (array_size_check): New helper function.
	(gfc_check_date_and_time): Use it for checking minimum size of
	VALUES argument.  Update kind check to Fortran 2018.
	* intrinsic.texi: Fix documentation of DATE_AND_TIME.

libgfortran/ChangeLog:

	PR fortran/96580
	* intrinsics/date_and_time.c (date_and_time): Handle VALUES argument
	for kind=2 and kind=16 (if available).

gcc/testsuite/ChangeLog:

	PR fortran/96580
	* gfortran.dg/date_and_time_2.f90: New test.
	* gfortran.dg/date_and_time_3.f90: New test.
	* gfortran.dg/date_and_time_4.f90: New test.

This patch try to introduce the rwlock and split the read/write to
unit_root tree and unit_cache with rwlock instead of the mutex to
increase CPU efficiency. In the get_gfc_unit function, the percentage
to step into the insert_unit function is around 30%, in most instances,
we can get the unit in the phase of reading the unit_cache or unit_root
tree. So split the read/write phase by rwlock would be an approach to
make it more parallel.

BTW, the IPC metrics can gain around 9x in our test
server with 220 cores. The benchmark we used is
https://github.com/rwesson/NEAT

libgcc/ChangeLog:

	* gthr-posix.h (__GTHREAD_RWLOCK_INIT): New macro.
	(__gthrw): New function.
	(__gthread_rwlock_rdlock): New function.
	(__gthread_rwlock_tryrdlock): New function.
	(__gthread_rwlock_wrlock): New function.
	(__gthread_rwlock_trywrlock): New function.
	(__gthread_rwlock_unlock): New function.

libgfortran/ChangeLog:

	* io/async.c (DEBUG_LINE): New macro.
	* io/async.h (RWLOCK_DEBUG_ADD): New macro.
	(CHECK_RDLOCK): New macro.
	(CHECK_WRLOCK): New macro.
	(TAIL_RWLOCK_DEBUG_QUEUE): New macro.
	(IN_RWLOCK_DEBUG_QUEUE): New macro.
	(RDLOCK): New macro.
	(WRLOCK): New macro.
	(RWUNLOCK): New macro.
	(RD_TO_WRLOCK): New macro.
	(INTERN_RDLOCK): New macro.
	(INTERN_WRLOCK): New macro.
	(INTERN_RWUNLOCK): New macro.
	* io/io.h (struct gfc_unit): Change UNIT_LOCK to UNIT_RWLOCK in
	a comment.
	(unit_lock): Remove including associated internal_proto.
	(unit_rwlock): New declarations including associated internal_proto.
	(dec_waiting_unlocked): Use WRLOCK and RWUNLOCK on unit_rwlock
	instead of __gthread_mutex_lock and __gthread_mutex_unlock on
	unit_lock.
	* io/transfer.c (st_read_done_worker): Use WRLOCK and RWUNLOCK on
	unit_rwlock instead of LOCK and UNLOCK on unit_lock.
	(st_write_done_worker): Likewise.
	* io/unit.c: Change UNIT_LOCK to UNIT_RWLOCK in 'IO locking rules'
	comment. Use unit_rwlock variable instead of unit_lock variable.
	(get_gfc_unit_from_unit_root): New function.
	(get_gfc_unit): Use RDLOCK, WRLOCK and RWUNLOCK on unit_rwlock
	instead of LOCK and UNLOCK on unit_lock.
	(close_unit_1): Use WRLOCK and RWUNLOCK on unit_rwlock instead of
	LOCK and UNLOCK on unit_lock.
	(close_units): Likewise.
	(newunit_alloc): Use RWUNLOCK on unit_rwlock instead of UNLOCK on
	unit_lock.
	* io/unix.c (find_file): Use RDLOCK and RWUNLOCK on unit_rwlock
	instead of LOCK and UNLOCK on unit_lock.
	(flush_all_units): Use WRLOCK and RWUNLOCK on unit_rwlock instead
	of LOCK and UNLOCK on unit_lock.

As reported, libgfortran fails to build on targets where int32_t and int
are different types, because it uses int vs. GFC_INTEGER_4 (under hood
int32_t) interchangeably.

The following patch fixes that.

2023-12-05  Florian Weimer  <fweimer@redhat.com>
	    Jakub Jelinek  <jakub@redhat.com>

	* io/list_read.c (list_formatted_read_scalar) <case BT_CLASS>:
	Change types of unit and noiostat to GFC_INTEGER_4 from int, change
	type of child_iostat from to GFC_INTEGER_4 * from int *, formatting
	fixes.
	(nml_read_obj): Likewise.
	* io/write.c (list_formatted_write_scalar) <case BT_CLASS>: Likewise.
	(nml_write_obj): Likewise.
	* io/transfer.c (unformatted_read, unformatted_write): Likewise.

Remove the forced overwrite of the first dimension of the result array
descriptor to set it to zero extent, in the function templates for
transformational functions doing an array reduction along a dimension.  This
overwrite, which happened before early returning in case the result array
was empty, was wrong because an array may have a non-zero extent in the
first dimension and still be empty if it has a zero extent in a higher
dimension.  Overwriting the dimension was resulting in wrong array result
upper bound for the first dimension in that case.

The offending piece of code was present in several places, and this removes
them all.  More precisely, there is only one case to fix for logical
reduction functions, and there are three cases for other reduction
functions, corresponding to non-masked reduction, reduction with array mask,
and reduction with scalar mask.  The impacted m4 files are
ifunction_logical.m4 for logical reduction functions, ifunction.m4 for
regular functions and types, ifunction-s.m4 for character minloc and maxloc,
ifunction-s2.m4 for character minval and maxval, and ifindloc1.m4 for
findloc.

	PR fortran/112371

libgfortran/ChangeLog:

	* m4/ifunction.m4 (START_ARRAY_FUNCTION, START_MASKED_ARRAY_FUNCTION,
	SCALAR_ARRAY_FUNCTION): Remove overwrite of the first dimension of the
	array descriptor.
	* m4/ifunction-s.m4 (START_ARRAY_FUNCTION, START_MASKED_ARRAY_FUNCTION,
	SCALAR_ARRAY_FUNCTION): Ditto.
	* m4/ifunction-s2.m4 (START_ARRAY_FUNCTION,
	START_MASKED_ARRAY_FUNCTION, SCALAR_ARRAY_FUNCTION): Ditto.
	* m4/ifunction_logical.m4 (START_ARRAY_FUNCTION): Ditto.
	* m4/ifindloc1.m4: Ditto.
	* generated/all_l1.c: Regenerate.
	* generated/all_l16.c: Regenerate.
	* generated/all_l2.c: Regenerate.
	* generated/all_l4.c: Regenerate.
	* generated/all_l8.c: Regenerate.
	* generated/any_l1.c: Regenerate.
	* generated/any_l16.c: Regenerate.
	* generated/any_l2.c: Regenerate.
	* generated/any_l4.c: Regenerate.
	* generated/any_l8.c: Regenerate.
	* generated/count_16_l.c: Regenerate.
	* generated/count_1_l.c: Regenerate.
	* generated/count_2_l.c: Regenerate.
	* generated/count_4_l.c: Regenerate.
	* generated/count_8_l.c: Regenerate.
	* generated/findloc1_c10.c: Regenerate.
	* generated/findloc1_c16.c: Regenerate.
	* generated/findloc1_c17.c: Regenerate.
	* generated/findloc1_c4.c: Regenerate.
	* generated/findloc1_c8.c: Regenerate.
	* generated/findloc1_i1.c: Regenerate.
	* generated/findloc1_i16.c: Regenerate.
	* generated/findloc1_i2.c: Regenerate.
	* generated/findloc1_i4.c: Regenerate.
	* generated/findloc1_i8.c: Regenerate.
	* generated/findloc1_r10.c: Regenerate.
	* generated/findloc1_r16.c: Regenerate.
	* generated/findloc1_r17.c: Regenerate.
	* generated/findloc1_r4.c: Regenerate.
	* generated/findloc1_r8.c: Regenerate.
	* generated/findloc1_s1.c: Regenerate.
	* generated/findloc1_s4.c: Regenerate.
	* generated/iall_i1.c: Regenerate.
	* generated/iall_i16.c: Regenerate.
	* generated/iall_i2.c: Regenerate.
	* generated/iall_i4.c: Regenerate.
	* generated/iall_i8.c: Regenerate.
	* generated/iany_i1.c: Regenerate.
	* generated/iany_i16.c: Regenerate.
	* generated/iany_i2.c: Regenerate.
	* generated/iany_i4.c: Regenerate.
	* generated/iany_i8.c: Regenerate.
	* generated/iparity_i1.c: Regenerate.
	* generated/iparity_i16.c: Regenerate.
	* generated/iparity_i2.c: Regenerate.
	* generated/iparity_i4.c: Regenerate.
	* generated/iparity_i8.c: Regenerate.
	* generated/maxloc1_16_i1.c: Regenerate.
	* generated/maxloc1_16_i16.c: Regenerate.
	* generated/maxloc1_16_i2.c: Regenerate.
	* generated/maxloc1_16_i4.c: Regenerate.
	* generated/maxloc1_16_i8.c: Regenerate.
	* generated/maxloc1_16_r10.c: Regenerate.
	* generated/maxloc1_16_r16.c: Regenerate.
	* generated/maxloc1_16_r17.c: Regenerate.
	* generated/maxloc1_16_r4.c: Regenerate.
	* generated/maxloc1_16_r8.c: Regenerate.
	* generated/maxloc1_16_s1.c: Regenerate.
	* generated/maxloc1_16_s4.c: Regenerate.
	* generated/maxloc1_4_i1.c: Regenerate.
	* generated/maxloc1_4_i16.c: Regenerate.
	* generated/maxloc1_4_i2.c: Regenerate.
	* generated/maxloc1_4_i4.c: Regenerate.
	* generated/maxloc1_4_i8.c: Regenerate.
	* generated/maxloc1_4_r10.c: Regenerate.
	* generated/maxloc1_4_r16.c: Regenerate.
	* generated/maxloc1_4_r17.c: Regenerate.
	* generated/maxloc1_4_r4.c: Regenerate.
	* generated/maxloc1_4_r8.c: Regenerate.
	* generated/maxloc1_4_s1.c: Regenerate.
	* generated/maxloc1_4_s4.c: Regenerate.
	* generated/maxloc1_8_i1.c: Regenerate.
	* generated/maxloc1_8_i16.c: Regenerate.
	* generated/maxloc1_8_i2.c: Regenerate.
	* generated/maxloc1_8_i4.c: Regenerate.
	* generated/maxloc1_8_i8.c: Regenerate.
	* generated/maxloc1_8_r10.c: Regenerate.
	* generated/maxloc1_8_r16.c: Regenerate.
	* generated/maxloc1_8_r17.c: Regenerate.
	* generated/maxloc1_8_r4.c: Regenerate.
	* generated/maxloc1_8_r8.c: Regenerate.
	* generated/maxloc1_8_s1.c: Regenerate.
	* generated/maxloc1_8_s4.c: Regenerate.
	* generated/maxval1_s1.c: Regenerate.
	* generated/maxval1_s4.c: Regenerate.
	* generated/maxval_i1.c: Regenerate.
	* generated/maxval_i16.c: Regenerate.
	* generated/maxval_i2.c: Regenerate.
	* generated/maxval_i4.c: Regenerate.
	* generated/maxval_i8.c: Regenerate.
	* generated/maxval_r10.c: Regenerate.
	* generated/maxval_r16.c: Regenerate.
	* generated/maxval_r17.c: Regenerate.
	* generated/maxval_r4.c: Regenerate.
	* generated/maxval_r8.c: Regenerate.
	* generated/minloc1_16_i1.c: Regenerate.
	* generated/minloc1_16_i16.c: Regenerate.
	* generated/minloc1_16_i2.c: Regenerate.
	* generated/minloc1_16_i4.c: Regenerate.
	* generated/minloc1_16_i8.c: Regenerate.
	* generated/minloc1_16_r10.c: Regenerate.
	* generated/minloc1_16_r16.c: Regenerate.
	* generated/minloc1_16_r17.c: Regenerate.
	* generated/minloc1_16_r4.c: Regenerate.
	* generated/minloc1_16_r8.c: Regenerate.
	* generated/minloc1_16_s1.c: Regenerate.
	* generated/minloc1_16_s4.c: Regenerate.
	* generated/minloc1_4_i1.c: Regenerate.
	* generated/minloc1_4_i16.c: Regenerate.
	* generated/minloc1_4_i2.c: Regenerate.
	* generated/minloc1_4_i4.c: Regenerate.
	* generated/minloc1_4_i8.c: Regenerate.
	* generated/minloc1_4_r10.c: Regenerate.
	* generated/minloc1_4_r16.c: Regenerate.
	* generated/minloc1_4_r17.c: Regenerate.
	* generated/minloc1_4_r4.c: Regenerate.
	* generated/minloc1_4_r8.c: Regenerate.
	* generated/minloc1_4_s1.c: Regenerate.
	* generated/minloc1_4_s4.c: Regenerate.
	* generated/minloc1_8_i1.c: Regenerate.
	* generated/minloc1_8_i16.c: Regenerate.
	* generated/minloc1_8_i2.c: Regenerate.
	* generated/minloc1_8_i4.c: Regenerate.
	* generated/minloc1_8_i8.c: Regenerate.
	* generated/minloc1_8_r10.c: Regenerate.
	* generated/minloc1_8_r16.c: Regenerate.
	* generated/minloc1_8_r17.c: Regenerate.
	* generated/minloc1_8_r4.c: Regenerate.
	* generated/minloc1_8_r8.c: Regenerate.
	* generated/minloc1_8_s1.c: Regenerate.
	* generated/minloc1_8_s4.c: Regenerate.
	* generated/minval1_s1.c: Regenerate.
	* generated/minval1_s4.c: Regenerate.
	* generated/minval_i1.c: Regenerate.
	* generated/minval_i16.c: Regenerate.
	* generated/minval_i2.c: Regenerate.
	* generated/minval_i4.c: Regenerate.
	* generated/minval_i8.c: Regenerate.
	* generated/minval_r10.c: Regenerate.
	* generated/minval_r16.c: Regenerate.
	* generated/minval_r17.c: Regenerate.
	* generated/minval_r4.c: Regenerate.
	* generated/minval_r8.c: Regenerate.
	* generated/norm2_r10.c: Regenerate.
	* generated/norm2_r16.c: Regenerate.
	* generated/norm2_r17.c: Regenerate.
	* generated/norm2_r4.c: Regenerate.
	* generated/norm2_r8.c: Regenerate.
	* generated/parity_l1.c: Regenerate.
	* generated/parity_l16.c: Regenerate.
	* generated/parity_l2.c: Regenerate.
	* generated/parity_l4.c: Regenerate.
	* generated/parity_l8.c: Regenerate.
	* generated/product_c10.c: Regenerate.
	* generated/product_c16.c: Regenerate.
	* generated/product_c17.c: Regenerate.
	* generated/product_c4.c: Regenerate.
	* generated/product_c8.c: Regenerate.
	* generated/product_i1.c: Regenerate.
	* generated/product_i16.c: Regenerate.
	* generated/product_i2.c: Regenerate.
	* generated/product_i4.c: Regenerate.
	* generated/product_i8.c: Regenerate.
	* generated/product_r10.c: Regenerate.
	* generated/product_r16.c: Regenerate.
	* generated/product_r17.c: Regenerate.
	* generated/product_r4.c: Regenerate.
	* generated/product_r8.c: Regenerate.
	* generated/sum_c10.c: Regenerate.
	* generated/sum_c16.c: Regenerate.
	* generated/sum_c17.c: Regenerate.
	* generated/sum_c4.c: Regenerate.
	* generated/sum_c8.c: Regenerate.
	* generated/sum_i1.c: Regenerate.
	* generated/sum_i16.c: Regenerate.
	* generated/sum_i2.c: Regenerate.
	* generated/sum_i4.c: Regenerate.
	* generated/sum_i8.c: Regenerate.
	* generated/sum_r10.c: Regenerate.
	* generated/sum_r16.c: Regenerate.
	* generated/sum_r17.c: Regenerate.
	* generated/sum_r4.c: Regenerate.
	* generated/sum_r8.c: Regenerate.

gcc/testsuite/ChangeLog:

	* gfortran.dg/bound_11.f90: New test.

Remove the early return present in function templates for transformational
functions doing a (masked) reduction of an array along a dimension.
This early return, which triggered if the extent in the reduction dimension
was zero, was wrong because even if the reduction operation degenerates to
a constant value in that case, one has to loop anyway along the other
dimensions to initialize every element of the resulting array with that
constant value.  The case of negative extent (not sure whether it may happen
in practice) which was also early returning, is handled by clamping to zero.

The offending piece of code was present in several places, and this removes
them all.  Namely, the impacted m4 files are ifunction.m4 for regular
functions and types, ifunction-s.m4 for character minloc and maxloc, and
ifunction-s2.m4 for character minval and maxval.

	PR fortran/112371

libgfortran/ChangeLog:

	* m4/ifunction.m4 (START_MASKED_ARRAY_FUNCTION): Remove early return if
	extent is zero or less, and clamp negative value to zero.
	* m4/ifunction-s.m4 (START_MASKED_ARRAY_FUNCTION): Ditto.
	* m4/ifunction-s2.m4 (START_MASKED_ARRAY_FUNCTION): Ditto.
	* generated/iall_i1.c: Regenerate.
	* generated/iall_i16.c: Regenerate.
	* generated/iall_i2.c: Regenerate.
	* generated/iall_i4.c: Regenerate.
	* generated/iall_i8.c: Regenerate.
	* generated/iany_i1.c: Regenerate.
	* generated/iany_i16.c: Regenerate.
	* generated/iany_i2.c: Regenerate.
	* generated/iany_i4.c: Regenerate.
	* generated/iany_i8.c: Regenerate.
	* generated/iparity_i1.c: Regenerate.
	* generated/iparity_i16.c: Regenerate.
	* generated/iparity_i2.c: Regenerate.
	* generated/iparity_i4.c: Regenerate.
	* generated/iparity_i8.c: Regenerate.
	* generated/maxloc1_16_i1.c: Regenerate.
	* generated/maxloc1_16_i16.c: Regenerate.
	* generated/maxloc1_16_i2.c: Regenerate.
	* generated/maxloc1_16_i4.c: Regenerate.
	* generated/maxloc1_16_i8.c: Regenerate.
	* generated/maxloc1_16_r10.c: Regenerate.
	* generated/maxloc1_16_r16.c: Regenerate.
	* generated/maxloc1_16_r17.c: Regenerate.
	* generated/maxloc1_16_r4.c: Regenerate.
	* generated/maxloc1_16_r8.c: Regenerate.
	* generated/maxloc1_16_s1.c: Regenerate.
	* generated/maxloc1_16_s4.c: Regenerate.
	* generated/maxloc1_4_i1.c: Regenerate.
	* generated/maxloc1_4_i16.c: Regenerate.
	* generated/maxloc1_4_i2.c: Regenerate.
	* generated/maxloc1_4_i4.c: Regenerate.
	* generated/maxloc1_4_i8.c: Regenerate.
	* generated/maxloc1_4_r10.c: Regenerate.
	* generated/maxloc1_4_r16.c: Regenerate.
	* generated/maxloc1_4_r17.c: Regenerate.
	* generated/maxloc1_4_r4.c: Regenerate.
	* generated/maxloc1_4_r8.c: Regenerate.
	* generated/maxloc1_4_s1.c: Regenerate.
	* generated/maxloc1_4_s4.c: Regenerate.
	* generated/maxloc1_8_i1.c: Regenerate.
	* generated/maxloc1_8_i16.c: Regenerate.
	* generated/maxloc1_8_i2.c: Regenerate.
	* generated/maxloc1_8_i4.c: Regenerate.
	* generated/maxloc1_8_i8.c: Regenerate.
	* generated/maxloc1_8_r10.c: Regenerate.
	* generated/maxloc1_8_r16.c: Regenerate.
	* generated/maxloc1_8_r17.c: Regenerate.
	* generated/maxloc1_8_r4.c: Regenerate.
	* generated/maxloc1_8_r8.c: Regenerate.
	* generated/maxloc1_8_s1.c: Regenerate.
	* generated/maxloc1_8_s4.c: Regenerate.
	* generated/maxval1_s1.c: Regenerate.
	* generated/maxval1_s4.c: Regenerate.
	* generated/maxval_i1.c: Regenerate.
	* generated/maxval_i16.c: Regenerate.
	* generated/maxval_i2.c: Regenerate.
	* generated/maxval_i4.c: Regenerate.
	* generated/maxval_i8.c: Regenerate.
	* generated/maxval_r10.c: Regenerate.
	* generated/maxval_r16.c: Regenerate.
	* generated/maxval_r17.c: Regenerate.
	* generated/maxval_r4.c: Regenerate.
	* generated/maxval_r8.c: Regenerate.
	* generated/minloc1_16_i1.c: Regenerate.
	* generated/minloc1_16_i16.c: Regenerate.
	* generated/minloc1_16_i2.c: Regenerate.
	* generated/minloc1_16_i4.c: Regenerate.
	* generated/minloc1_16_i8.c: Regenerate.
	* generated/minloc1_16_r10.c: Regenerate.
	* generated/minloc1_16_r16.c: Regenerate.
	* generated/minloc1_16_r17.c: Regenerate.
	* generated/minloc1_16_r4.c: Regenerate.
	* generated/minloc1_16_r8.c: Regenerate.
	* generated/minloc1_16_s1.c: Regenerate.
	* generated/minloc1_16_s4.c: Regenerate.
	* generated/minloc1_4_i1.c: Regenerate.
	* generated/minloc1_4_i16.c: Regenerate.
	* generated/minloc1_4_i2.c: Regenerate.
	* generated/minloc1_4_i4.c: Regenerate.
	* generated/minloc1_4_i8.c: Regenerate.
	* generated/minloc1_4_r10.c: Regenerate.
	* generated/minloc1_4_r16.c: Regenerate.
	* generated/minloc1_4_r17.c: Regenerate.
	* generated/minloc1_4_r4.c: Regenerate.
	* generated/minloc1_4_r8.c: Regenerate.
	* generated/minloc1_4_s1.c: Regenerate.
	* generated/minloc1_4_s4.c: Regenerate.
	* generated/minloc1_8_i1.c: Regenerate.
	* generated/minloc1_8_i16.c: Regenerate.
	* generated/minloc1_8_i2.c: Regenerate.
	* generated/minloc1_8_i4.c: Regenerate.
	* generated/minloc1_8_i8.c: Regenerate.
	* generated/minloc1_8_r10.c: Regenerate.
	* generated/minloc1_8_r16.c: Regenerate.
	* generated/minloc1_8_r17.c: Regenerate.
	* generated/minloc1_8_r4.c: Regenerate.
	* generated/minloc1_8_r8.c: Regenerate.
	* generated/minloc1_8_s1.c: Regenerate.
	* generated/minloc1_8_s4.c: Regenerate.
	* generated/minval1_s1.c: Regenerate.
	* generated/minval1_s4.c: Regenerate.
	* generated/minval_i1.c: Regenerate.
	* generated/minval_i16.c: Regenerate.
	* generated/minval_i2.c: Regenerate.
	* generated/minval_i4.c: Regenerate.
	* generated/minval_i8.c: Regenerate.
	* generated/minval_r10.c: Regenerate.
	* generated/minval_r16.c: Regenerate.
	* generated/minval_r17.c: Regenerate.
	* generated/minval_r4.c: Regenerate.
	* generated/minval_r8.c: Regenerate.
	* generated/product_c10.c: Regenerate.
	* generated/product_c16.c: Regenerate.
	* generated/product_c17.c: Regenerate.
	* generated/product_c4.c: Regenerate.
	* generated/product_c8.c: Regenerate.
	* generated/product_i1.c: Regenerate.
	* generated/product_i16.c: Regenerate.
	* generated/product_i2.c: Regenerate.
	* generated/product_i4.c: Regenerate.
	* generated/product_i8.c: Regenerate.
	* generated/product_r10.c: Regenerate.
	* generated/product_r16.c: Regenerate.
	* generated/product_r17.c: Regenerate.
	* generated/product_r4.c: Regenerate.
	* generated/product_r8.c: Regenerate.
	* generated/sum_c10.c: Regenerate.
	* generated/sum_c16.c: Regenerate.
	* generated/sum_c17.c: Regenerate.
	* generated/sum_c4.c: Regenerate.
	* generated/sum_c8.c: Regenerate.
	* generated/sum_i1.c: Regenerate.
	* generated/sum_i16.c: Regenerate.
	* generated/sum_i2.c: Regenerate.
	* generated/sum_i4.c: Regenerate.
	* generated/sum_i8.c: Regenerate.
	* generated/sum_r10.c: Regenerate.
	* generated/sum_r16.c: Regenerate.
	* generated/sum_r17.c: Regenerate.
	* generated/sum_r4.c: Regenerate.
	* generated/sum_r8.c: Regenerate.

gcc/testsuite/ChangeLog:

	* gfortran.dg/bound_10.f90: New test.

In the function template of transformational functions doing a reduction
of an array along one dimension, if the passed in result array was
unallocated and the calculated allocation size was zero (this is the case
of empty result arrays), an early return used to skip the allocation.  This
change moves the allocation before the early return, so that empty result
arrays are not seen as unallocated.  This is possible because zero size is
explicitly supported by the allocation function.

The offending code is present in several places, and this updates them all.
More precisely, there is one place in the template for logical reductions,
and there are two places in the templates corresponding to masked reductions
with respectively array mask and scalar mask.  Templates for unmasked
reductions, which already allocate before returning, are not affected, but
unmasked reductions are checked nevertheless in the testcase.  The affected
m4 files are ifunction.m4 for regular functions and types, ifunction-s.m4
for character minloc and maxloc, ifunction-s2.m4 for character minval and
maxval, and ifunction_logical for logical reductions.

	PR fortran/112412

libgfortran/ChangeLog:

	* m4/ifunction.m4 (START_MASKED_ARRAY_FUNCTION, SCALAR_ARRAY_FUNCTION):
	Don't skip allocation if the allocation size is zero.
	* m4/ifunction-s.m4 (START_MASKED_ARRAY_FUNCTION,
	SCALAR_ARRAY_FUNCTION): Ditto.
	* m4/ifunction-s2.m4 (START_MASKED_ARRAY_FUNCTION,
	SCALAR_ARRAY_FUNCTION): Ditto.
	* m4/ifunction_logical.m4 (START_ARRAY_FUNCTION): Ditto.
	* generated/all_l1.c: Regenerate.
	* generated/all_l16.c: Regenerate.
	* generated/all_l2.c: Regenerate.
	* generated/all_l4.c: Regenerate.
	* generated/all_l8.c: Regenerate.
	* generated/any_l1.c: Regenerate.
	* generated/any_l16.c: Regenerate.
	* generated/any_l2.c: Regenerate.
	* generated/any_l4.c: Regenerate.
	* generated/any_l8.c: Regenerate.
	* generated/count_16_l.c: Regenerate.
	* generated/count_1_l.c: Regenerate.
	* generated/count_2_l.c: Regenerate.
	* generated/count_4_l.c: Regenerate.
	* generated/count_8_l.c: Regenerate.
	* generated/iall_i1.c: Regenerate.
	* generated/iall_i16.c: Regenerate.
	* generated/iall_i2.c: Regenerate.
	* generated/iall_i4.c: Regenerate.
	* generated/iall_i8.c: Regenerate.
	* generated/iany_i1.c: Regenerate.
	* generated/iany_i16.c: Regenerate.
	* generated/iany_i2.c: Regenerate.
	* generated/iany_i4.c: Regenerate.
	* generated/iany_i8.c: Regenerate.
	* generated/iparity_i1.c: Regenerate.
	* generated/iparity_i16.c: Regenerate.
	* generated/iparity_i2.c: Regenerate.
	* generated/iparity_i4.c: Regenerate.
	* generated/iparity_i8.c: Regenerate.
	* generated/maxloc1_16_i1.c: Regenerate.
	* generated/maxloc1_16_i16.c: Regenerate.
	* generated/maxloc1_16_i2.c: Regenerate.
	* generated/maxloc1_16_i4.c: Regenerate.
	* generated/maxloc1_16_i8.c: Regenerate.
	* generated/maxloc1_16_r10.c: Regenerate.
	* generated/maxloc1_16_r16.c: Regenerate.
	* generated/maxloc1_16_r17.c: Regenerate.
	* generated/maxloc1_16_r4.c: Regenerate.
	* generated/maxloc1_16_r8.c: Regenerate.
	* generated/maxloc1_16_s1.c: Regenerate.
	* generated/maxloc1_16_s4.c: Regenerate.
	* generated/maxloc1_4_i1.c: Regenerate.
	* generated/maxloc1_4_i16.c: Regenerate.
	* generated/maxloc1_4_i2.c: Regenerate.
	* generated/maxloc1_4_i4.c: Regenerate.
	* generated/maxloc1_4_i8.c: Regenerate.
	* generated/maxloc1_4_r10.c: Regenerate.
	* generated/maxloc1_4_r16.c: Regenerate.
	* generated/maxloc1_4_r17.c: Regenerate.
	* generated/maxloc1_4_r4.c: Regenerate.
	* generated/maxloc1_4_r8.c: Regenerate.
	* generated/maxloc1_4_s1.c: Regenerate.
	* generated/maxloc1_4_s4.c: Regenerate.
	* generated/maxloc1_8_i1.c: Regenerate.
	* generated/maxloc1_8_i16.c: Regenerate.
	* generated/maxloc1_8_i2.c: Regenerate.
	* generated/maxloc1_8_i4.c: Regenerate.
	* generated/maxloc1_8_i8.c: Regenerate.
	* generated/maxloc1_8_r10.c: Regenerate.
	* generated/maxloc1_8_r16.c: Regenerate.
	* generated/maxloc1_8_r17.c: Regenerate.
	* generated/maxloc1_8_r4.c: Regenerate.
	* generated/maxloc1_8_r8.c: Regenerate.
	* generated/maxloc1_8_s1.c: Regenerate.
	* generated/maxloc1_8_s4.c: Regenerate.
	* generated/maxval1_s1.c: Regenerate.
	* generated/maxval1_s4.c: Regenerate.
	* generated/maxval_i1.c: Regenerate.
	* generated/maxval_i16.c: Regenerate.
	* generated/maxval_i2.c: Regenerate.
	* generated/maxval_i4.c: Regenerate.
	* generated/maxval_i8.c: Regenerate.
	* generated/maxval_r10.c: Regenerate.
	* generated/maxval_r16.c: Regenerate.
	* generated/maxval_r17.c: Regenerate.
	* generated/maxval_r4.c: Regenerate.
	* generated/maxval_r8.c: Regenerate.
	* generated/minloc1_16_i1.c: Regenerate.
	* generated/minloc1_16_i16.c: Regenerate.
	* generated/minloc1_16_i2.c: Regenerate.
	* generated/minloc1_16_i4.c: Regenerate.
	* generated/minloc1_16_i8.c: Regenerate.
	* generated/minloc1_16_r10.c: Regenerate.
	* generated/minloc1_16_r16.c: Regenerate.
	* generated/minloc1_16_r17.c: Regenerate.
	* generated/minloc1_16_r4.c: Regenerate.
	* generated/minloc1_16_r8.c: Regenerate.
	* generated/minloc1_16_s1.c: Regenerate.
	* generated/minloc1_16_s4.c: Regenerate.
	* generated/minloc1_4_i1.c: Regenerate.
	* generated/minloc1_4_i16.c: Regenerate.
	* generated/minloc1_4_i2.c: Regenerate.
	* generated/minloc1_4_i4.c: Regenerate.
	* generated/minloc1_4_i8.c: Regenerate.
	* generated/minloc1_4_r10.c: Regenerate.
	* generated/minloc1_4_r16.c: Regenerate.
	* generated/minloc1_4_r17.c: Regenerate.
	* generated/minloc1_4_r4.c: Regenerate.
	* generated/minloc1_4_r8.c: Regenerate.
	* generated/minloc1_4_s1.c: Regenerate.
	* generated/minloc1_4_s4.c: Regenerate.
	* generated/minloc1_8_i1.c: Regenerate.
	* generated/minloc1_8_i16.c: Regenerate.
	* generated/minloc1_8_i2.c: Regenerate.
	* generated/minloc1_8_i4.c: Regenerate.
	* generated/minloc1_8_i8.c: Regenerate.
	* generated/minloc1_8_r10.c: Regenerate.
	* generated/minloc1_8_r16.c: Regenerate.
	* generated/minloc1_8_r17.c: Regenerate.
	* generated/minloc1_8_r4.c: Regenerate.
	* generated/minloc1_8_r8.c: Regenerate.
	* generated/minloc1_8_s1.c: Regenerate.
	* generated/minloc1_8_s4.c: Regenerate.
	* generated/minval1_s1.c: Regenerate.
	* generated/minval1_s4.c: Regenerate.
	* generated/minval_i1.c: Regenerate.
	* generated/minval_i16.c: Regenerate.
	* generated/minval_i2.c: Regenerate.
	* generated/minval_i4.c: Regenerate.
	* generated/minval_i8.c: Regenerate.
	* generated/minval_r10.c: Regenerate.
	* generated/minval_r16.c: Regenerate.
	* generated/minval_r17.c: Regenerate.
	* generated/minval_r4.c: Regenerate.
	* generated/minval_r8.c: Regenerate.
	* generated/product_c10.c: Regenerate.
	* generated/product_c16.c: Regenerate.
	* generated/product_c17.c: Regenerate.
	* generated/product_c4.c: Regenerate.
	* generated/product_c8.c: Regenerate.
	* generated/product_i1.c: Regenerate.
	* generated/product_i16.c: Regenerate.
	* generated/product_i2.c: Regenerate.
	* generated/product_i4.c: Regenerate.
	* generated/product_i8.c: Regenerate.
	* generated/product_r10.c: Regenerate.
	* generated/product_r16.c: Regenerate.
	* generated/product_r17.c: Regenerate.
	* generated/product_r4.c: Regenerate.
	* generated/product_r8.c: Regenerate.
	* generated/sum_c10.c: Regenerate.
	* generated/sum_c16.c: Regenerate.
	* generated/sum_c17.c: Regenerate.
	* generated/sum_c4.c: Regenerate.
	* generated/sum_c8.c: Regenerate.
	* generated/sum_i1.c: Regenerate.
	* generated/sum_i16.c: Regenerate.
	* generated/sum_i2.c: Regenerate.
	* generated/sum_i4.c: Regenerate.
	* generated/sum_i8.c: Regenerate.
	* generated/sum_r10.c: Regenerate.
	* generated/sum_r16.c: Regenerate.
	* generated/sum_r17.c: Regenerate.
	* generated/sum_r4.c: Regenerate.
	* generated/sum_r8.c: Regenerate.

gcc/testsuite/ChangeLog:

	* gfortran.dg/allocated_4.f90: New test.

The prototype of calloc is
  void *calloc(size_t nmemb, size_t size);
denoting "an array of nmemb objects, each of whose size is size." (C23)

In order to follow the meaning of the argument names and to silence
a -Walloc-size warning, this commit swaps the order of the two args
to read now:  calloc (1, sizeof (transfer_queue));

libgfortran/ChangeLog:

	PR libfortran/112364
	* io/async.c (enqueue_transfer, enqueue_done_id, enqueue_done,
	enqueue_close): Swap 1st and 2nd arg in calloc call.

Recent Darwin versions place contraints on the use of run paths
specified in environment variables.  This breaks some assumptions
in the GCC build.

This change allows the user to configure a Darwin build to use
'@rpath/libraryname.dylib' in library names and then to add an
embedded runpath to executables (and libraries with dependents).

The embedded runpath is added by default unless the user adds
'-nodefaultrpaths' to the link line.

For an installed compiler, it means that any executable built with
that compiler will reference the runtimes installed with the
compiler (equivalent to hard-coding the library path into the name
of the library).

During build-time configurations  any "-B" entries will be added to
the runpath thus the newly-built libraries will be found by exes.

Since the install name is set in libtool, that decision needs to be
available here (but might also cause dependent ones in Makefiles,
so we need to export a conditional).

This facility is not available for Darwin 8 or earlier, however the
existing environment variable runpath does work there.

We default this on for systems where the external DYLD_LIBRARY_PATH
does not work and off for Darwin 8 or earlier.  For systems that can
use either method, if the value is unset, we use the default (which
is currently DYLD_LIBRARY_PATH).

ChangeLog:

	* configure: Regenerate.
	* configure.ac: Do not add default runpaths to GCC exes
	when we are building -static-libstdc++/-static-libgcc (the
	default).
	* libtool.m4: Add 'enable-darwin-at-runpath'.  Act  on the
	enable flag to alter Darwin libraries to use @rpath names.

gcc/ChangeLog:

	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* config/darwin.h: Handle Darwin rpaths.
	* config/darwin.opt: Handle Darwin rpaths.
	* Makefile.in:  Handle Darwin rpaths.

gcc/ada/ChangeLog:

	* gcc-interface/Makefile.in: Handle Darwin rpaths.

gcc/jit/ChangeLog:
	* Make-lang.in: Handle Darwin rpaths.

libatomic/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libbacktrace/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.

libgcc/ChangeLog:

	* config/t-slibgcc-darwin: Generate libgcc_s
	with an @rpath name.
	* config.host: Handle Darwin rpaths.

libgfortran/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths

libgm2/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* aclocal.m4: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* libm2cor/Makefile.am: Handle Darwin rpaths.
	* libm2cor/Makefile.in: Regenerate.
	* libm2iso/Makefile.am: Handle Darwin rpaths.
	* libm2iso/Makefile.in: Regenerate.
	* libm2log/Makefile.am: Handle Darwin rpaths.
	* libm2log/Makefile.in: Regenerate.
	* libm2min/Makefile.am: Handle Darwin rpaths.
	* libm2min/Makefile.in: Regenerate.
	* libm2pim/Makefile.am: Handle Darwin rpaths.
	* libm2pim/Makefile.in: Regenerate.

libgomp/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths

libitm/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libobjc/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libphobos/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* libdruntime/Makefile.am: Handle Darwin rpaths.
	* libdruntime/Makefile.in: Regenerate.
	* src/Makefile.am: Handle Darwin rpaths.
	* src/Makefile.in: Regenerate.

libquadmath/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libsanitizer/ChangeLog:

	* asan/Makefile.am: Handle Darwin rpaths.
	* asan/Makefile.in: Regenerate.
	* configure: Regenerate.
	* hwasan/Makefile.am: Handle Darwin rpaths.
	* hwasan/Makefile.in: Regenerate.
	* lsan/Makefile.am: Handle Darwin rpaths.
	* lsan/Makefile.in: Regenerate.
	* tsan/Makefile.am: Handle Darwin rpaths.
	* tsan/Makefile.in: Regenerate.
	* ubsan/Makefile.am: Handle Darwin rpaths.
	* ubsan/Makefile.in: Regenerate.

libssp/ChangeLog:

	* Makefile.am: Handle Darwin rpaths.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.
	* src/Makefile.am: Handle Darwin rpaths.
	* src/Makefile.in: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

lto-plugin/ChangeLog:
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

zlib/ChangeLog:
	* configure: Regenerate.
	* configure.ac: Handle Darwin rpaths.

The only caller of write_z is formatted_transfer_scalar_write that passes
kind to 'len'; in turn, write_z is the only caller of xtoa_big, passing on
its 'len'.  The kind is passed as is, except for GFC_REAL_17 for which
len = 16 is used.

libgfortran/
	* io/write.c (xtoa_big): Change a 'GCC diagnostic ignored
	"-Wstringop-overflow"' to an assumption (via __builtin_unreachable).t

This reports common symbols like GNU nm, via a type code of 'C'.

ChangeLog:

	* libtool.m4 (lt_cv_sys_global_symbol_pipe): Augment symcode for
	Solaris 11.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

These are the os support patches we have been grooming and maintaining
for quite a few years over on git.haiku-os.org.  All of these
architectures are working and most have been stable for quite some time.

ChangeLog:

	* configure: Regenerate.
	* configure.ac: Add Haiku to list of ELF OSes
	* libtool.m4: Update sys_lib_dlsearch_path_spec on Haiku.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

My previous nm patch handled all cases but one -- if the user set NM in
the environment to a path which contained an option, libtool's nm
detection tries to run nm against a copy of nm with the options in it:
e.g. if NM was set to "nm --blargle", and nm was found in /usr/bin, the
test would try to run "/usr/bin/nm --blargle /usr/bin/nm --blargle".
This is unlikely to be desirable: in this case we should run
"/usr/bin/nm --blargle /usr/bin/nm".

Furthermore, as part of this nm has to detect when the passed-in $NM
contains a path, and in that case avoid doing a path search itself.
This too was thrown off if an option contained something that looked
like a path, e.g. NM="nm -B../prev-gcc"; libtool then tries to run
"nm -B../prev-gcc nm" which rarely works well (and indeed it looks
to see whether that nm exists, finds it doesn't, and wrongly concludes
that nm -p or whatever does not work).

Fix all of these by clipping all options (defined as everything
including and after the first " -") before deciding whether nm
contains a path (but not using the clipped value for anything else),
and then removing all options from the path-modified nm before
looking to see whether that nm existed.

NM=my-nm now does a path search and runs e.g.
  /usr/bin/my-nm -B /usr/bin/my-nm

NM=/usr/bin/my-nm now avoids a path search and runs e.g.
  /usr/bin/my-nm -B /usr/bin/my-nm

NM="my-nm -p../wombat" now does a path search and runs e.g.
  /usr/bin/my-nm -p../wombat -B /usr/bin/my-nm

NM="../prev-binutils/new-nm -B../prev-gcc" now avoids a path search:
  ../prev-binutils/my-nm -B../prev-gcc -B ../prev-binutils/my-nm

This seems to be all combinations, including those used by GCC bootstrap
(which, before this commit, fails to bootstrap when configured
--with-build-config=bootstrap-lto, because the lto plugin is now using
--export-symbols-regex, which requires libtool to find a working nm,
while also using -B../prev-gcc to point at the lto plugin associated
with the GCC just built.)

Regenerate all affected configure scripts.

ChangeLog:

	* libtool.m4 (LT_PATH_NM): Handle user-specified NM with
	options, including options containing paths.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

Libtool needs to get BSD-format (or MS-format) output out of the system
nm, so that it can scan generated object files for symbol names for
-export-symbols-regex support.  Some nms need specific flags to turn on
BSD-formatted output, so libtool checks for this in its AC_PATH_NM.
Unfortunately the code to do this has a pair of interlocking flaws:

 - it runs the test by doing an nm of /dev/null.  Some platforms
   reasonably refuse to do an nm on a device file, but before now this
   has only been worked around by assuming that the error message has a
   specific textual form emitted by Tru64 nm, and that getting this
   error means this is Tru64 nm and that nm -B would work to produce
   BSD-format output, even though the test never actually got anything
   but an error message out of nm -B.  This is fixable by nm'ing *nm
   itself* (since we necessarily have a path to it).

 - the test is entirely skipped if NM is set in the environment, on the
   grounds that the user has overridden the test: but the user cannot
   reasonably be expected to know that libtool wants not only nm but
   also flags forcing BSD-format output.  Worse yet, one such "user" is
   the top-level Cygnus configure script, which neither tests for
   nor specifies any BSD-format flags.  So platforms needing BSD-format
   flags always fail to set them when run in a Cygnus tree, breaking
   -export-symbols-regex on such platforms.  Libtool also needs to
   augment $LD on some platforms, but this is done unconditionally,
   augmenting whatever the user specified: the nm check should do the
   same.

   One wrinkle: if the user has overridden $NM, a path might have been
   provided: so we use the user-specified path if there was one, and
   otherwise do the path search as usual.  (If the nm specified doesn't
   work, this might lead to a few extra pointless path searches -- but
   the test is going to fail anyway, so that's not a problem.)

(Tested with NM unset, and set to nm, /usr/bin/nm, my-nm where my-nm is a
symlink to /usr/bin/nm on the PATH, and /not-on-the-path/my-nm where
*that* is a symlink to /usr/bin/nm.)

ChangeLog:

	* libtool.m4 (LT_PATH_NM): Try BSDization flags with a user-provided
	NM, if there is one.  Run nm on itself, not on /dev/null, to avoid
	errors from nms that refuse to work on non-regular files.  Remove
	other workarounds for this problem.  Strip out blank lines from the
	nm output.

fixincludes/ChangeLog:

	* configure: Regenerate.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

AR from older binutils doesn't work with --plugin and rc:

[hjl@gnu-cfl-2 bin]$ touch foo.c
[hjl@gnu-cfl-2 bin]$ ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c
[hjl@gnu-cfl-2 bin]$ ./ar --plugin /usr/libexec/gcc/x86_64-redhat-linux/10/liblto_plugin.so rc libfoo.a foo.c
./ar: no operation specified
[hjl@gnu-cfl-2 bin]$ ./ar --version
GNU ar (Linux/GNU Binutils) 2.29.51.0.1.20180112
Copyright (C) 2018 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
[hjl@gnu-cfl-2 bin]$

Check if AR works with --plugin and rc before passing --plugin to AR and
RANLIB.

ChangeLog:

	* configure: Regenerated.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Check if AR works with
	--plugin and rc before enabling --plugin.

config/ChangeLog:

	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): Check if AR works with
	--plugin and rc before enabling --plugin.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libiberty/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

zlib/ChangeLog:

	* configure: Regenerate.

Sync with binutils for building binutils with LTO:

50ad1254d50 GCC: Pass --plugin to AR and RANLIB

Detect GCC LTO plugin.  Pass --plugin to AR and RANLIB to support LTO
build.

ChangeLog:

	* Makefile.tpl (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	* configure.ac: Include config/gcc-plugin.m4.
	AC_SUBST AR_PLUGIN_OPTION and RANLIB_PLUGIN_OPTION.
	* libtool.m4 (_LT_CMD_OLD_ARCHIVE): Pass --plugin to AR and
	RANLIB if possible.
	* Makefile.in: Regenerated.
	* configure: Likewise.

config/ChangeLog:

	* gcc-plugin.m4 (GCC_PLUGIN_OPTION): New.

libiberty/ChangeLog:

	* Makefile.in (AR): Add @AR_PLUGIN_OPTION@
	(RANLIB): Add @RANLIB_PLUGIN_OPTION@.
	(configure_deps): Depend on ../config/gcc-plugin.m4.
	* configure.ac: AC_SUBST AR_PLUGIN_OPTION and
	RANLIB_PLUGIN_OPTION.
	* aclocal.m4: Regenerated.
	* configure: Likewise.

zlib/ChangeLog:

	* configure: Regenerated.

gcc/ChangeLog:

	* configure: Regenerate.

libatomic/ChangeLog:

	* configure: Regenerate.

libbacktrace/ChangeLog:

	* configure: Regenerate.

libcc1/ChangeLog:

	* configure: Regenerate.

libffi/ChangeLog:

	* configure: Regenerate.

libgfortran/ChangeLog:

	* configure: Regenerate.

libgm2/ChangeLog:

	* configure: Regenerate.

libgomp/ChangeLog:

	* configure: Regenerate.

libitm/ChangeLog:

	* configure: Regenerate.

libobjc/ChangeLog:

	* configure: Regenerate.

libphobos/ChangeLog:

	* configure: Regenerate.

libquadmath/ChangeLog:

	* configure: Regenerate.

libsanitizer/ChangeLog:

	* configure: Regenerate.

libssp/ChangeLog:

	* configure: Regenerate.

libstdc++-v3/ChangeLog:

	* configure: Regenerate.

libvtv/ChangeLog:

	* configure: Regenerate.

lto-plugin/ChangeLog:

	* configure: Regenerate.

So the problem here is EXPAND_INTER_MACRO_16 expands to nothing if 16 byte FP does not
exist but we still add a comma after it and that causes a build failure.
The same is true for EXPAND_INTER_MACRO_10 too.

Committed as obvious after a bootstrap and test on x86_64-linux-gnu and aarch64-linux-gnu.

libgfortran/ChangeLog:

	PR libfortran/110759
	* ieee/ieee_arithmetic.F90
	(COMP_INTERFACE): Remove the comma after EXPAND_INTER_MACRO_16
	and EXPAND_INTER_MACRO_10.
	(EXPAND_INTER_MACRO_16): Add comma here if 16 byte fp exist.
	(EXPAND_INTER_MACRO_10): Likewise.

Those operations were added to Fortran 2018, and correspond to
well-defined IEEE comparison operations, with defined signaling
semantics for NaNs. All are implemented in terms of GCC expressions and
built-ins, with no library support needed.

gcc/fortran/

	* f95-lang.cc (gfc_init_builtin_functions): Add __builtin_iseqsig.
	* trans-intrinsic.cc (conv_intrinsic_ieee_comparison): New
	function.
	(gfc_conv_ieee_arithmetic_function): Handle IEEE comparisons.

gcc/testsuite/

	* gfortran.dg/ieee/comparisons_1.f90: New test.
	* gfortran.dg/ieee/comparisons_2.f90: New test.
	* gfortran.dg/ieee/comparisons_3.F90: New test.

libgfortran/
	* ieee/ieee_arithmetic.F90: Add IEEE_QUIET_* and
	IEEE_SIGNALING_* functions.

libgfortran/

	PR libfortran/109373
	* configure.ac: Remove support for --enable-intermodule
	* Makefile.am: Remove onestep path.
	* configure: Regenerate.
	* Makefile.in: Regenerate.