https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83704
--- Comment #11 from Janne Blomqvist <jb at gcc dot gnu.org> --- Author: jb Date: Sun Jan 7 10:17:52 2018 New Revision: 256322 URL: https://gcc.gnu.org/viewcvs?rev=256322&root=gcc&view=rev Log: PR 78534, 83704 Handle large formatted I/O In order to handle large characters when doing formatted I/O, use size_t and ptrdiff_t for lengths. Compared to the previous patch, based on discussions on IRC use size_t for sizes that don't need to be negative rather than ptrdiff_t everywhere. Regtested on x86_64-pc-linux-gnu, approved as part of the PR 78534 approval, committed to trunk. libgfortran/ChangeLog: 2018-01-07 Janne Blomqvist <j...@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. Modified: trunk/libgfortran/ChangeLog trunk/libgfortran/io/fbuf.c trunk/libgfortran/io/fbuf.h trunk/libgfortran/io/io.h trunk/libgfortran/io/list_read.c trunk/libgfortran/io/read.c trunk/libgfortran/io/transfer.c trunk/libgfortran/io/unix.c trunk/libgfortran/io/unix.h trunk/libgfortran/io/write.c
