2018-01-07  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/78534
	PR fortran/83704
	* io/fbuf.c (fbuf_init): Use size_t instead of int for length.
	(fbuf_debug): Convert debug output to unsigned long.
	(fbuf_reset): Use ptrdiff_t for return value.
	(fbuf_alloc): Use size_t for length argument.
	(fbuf_flush): Handle large buffers.
	(fbuf_flush_list): Likewise.
	(fbuf_seek): Use ptrdiff_t for offset and return value.
	(fbuf_read): Use size_t for length argument.
	(fbuf_getc_refill): Use size_t to match fbuf_read.
	* io/fbuf.h (struct fbuf): Use size_t for lengths.
	(fbuf_init): Use size_t instead of int for length.
	(fbuf_reset): Use ptrdiff_t for return value.
	(fbuf_alloc): Use size_t for length argument.
	(fbuf_seek): Use ptrdiff_t for offset and return value.
	(fbuf_read): Use size_t for length argument.
	* io/io.h (read_block_form): Likewise.
	(read_block_form4): Likewise.
	(write_block): Likewise.
	(read_a): Likewise.
	(read_a_char4): Likewise.
	(read_x): Likewise.
	(write_a): Likewise.
	(write_a_char4): Likewise.
	* io/list_read.c (list_formatted_read_scalar): Use size_t to
	handle large buffers.
	* io/read.c (read_l): Likewise.
	(read_utf8): Likewise.
	(read_utf8_char1): Likewise.
	(read_default_char1): Likewise.
	(read_utf8_char4): Likewise.
	(read_default_char4): Likewise.
	(read_a): Likewise.
	(read_a_char4): Likewise.
	(eat_leading_spaces): Likewise.
	(next_char): Likewise.
	(read_decimal): Likewise.
	(read_radix): Likewise.
	(read_f): Likewise.
	(read_x): Likewise.
	* io/transfer.c (read_sf_internal): Likewise.
	(read_sf): Likewise.
	(read_block_form): Likewise.
	(read_block_form4): Likewise.
	(write_block): Likewise.
	(formatted_transfer_scalar_write): Likewise.
	(next_record_w): Likewise.
	* io/unix.c (mem_alloc_r): Likewise.
	(mem_alloc_r4): Likewise.
	(mem_alloc_w): Likewise.
	(mem_alloc_w4): Likewise.
	(mem_read): Likewise.
	(mem_read4): Likewise.
	(mem_write): Likewise.
	(mem_write4): Likewise.
	(open_internal): Likewise.
	(open_internal4): Likewise.
	* io/unix.h (open_internal): Likewise.
	(open_internal4): Likewise.
	(mem_alloc_w): Likewise.
	(mem_alloc_r): Likewise.
	(mem_alloc_w4): Likewise.
	(mem_alloc_r4): Likewise.
	* io/write.c (write_check_cc): Likewise.
	(write_cc): Likewise.
	(write_a): Likewise.
	(write_a_char4): Likewise.

2018-01-06  Janne Blomqvist  <jb@gcc.gnu.org>

	* io/write.c (namelist_write): Remove unused variable "i".

2018-01-06  Dominique d'Humieres  <dominiq@lps.ens.fr>
	    Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/83704
	* io/write.c (write_character): Use size_t instead of int for
	length.

2018-01-05  Janne Blomqvist  <jb@gcc.gnu.org>

	PR fortran/78534
	* intrinsics/args.c (getarg_i4): Use gfc_charlen_type.
	(get_command_argument_i4): Likewise.
	(get_command_i4): Likewise.
	* intrinsics/chmod.c (chmod_internal): Likewise.
	* intrinsics/env.c (get_environment_variable_i4): Likewise.
	* intrinsics/extends_type_of.c (struct vtype): Use size_t for size
	member.
	* intrinsics/gerror.c (gerror): Use gfc_charlen_type.
	* intrinsics/getlog.c (getlog): Likewise.
	* intrinsics/hostnm.c (hostnm_0): Likewise.
	* intrinsics/string_intrinsics_inc.c (string_len_trim): Rework to
	work if gfc_charlen_type is unsigned.
	(string_scan): Likewise.
	* io/transfer.c (transfer_character): Modify prototype.
	(transfer_character_write): Likewise.
	(transfer_character_wide): Likewise.
	(transfer_character_wide_write): Likewise.
	(transfer_array): Typecast to avoid signed-unsigned comparison.
	* io/unit.c (is_trim_ok): Use gfc_charlen_type.
	* io/write.c (namelist_write): Likewise.
	* libgfortran.h (gfc_charlen_type): Change typedef to size_t.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

	Update copyright years.

2018-01-02  Janne Blomqvist  <jb@gcc.gnu.org>

	PR libgfortran/83649
	* io/unix.c (MAX_CHUNK): New define.
	(raw_read): For reads larger than MAX_CHUNK, loop.
	(raw_write): Write no more than MAX_CHUNK bytes per iteration.

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