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2a354e0699
Prefer idx_t to size_t in lib/cmpbuf.c and related buffer-size code. Because POSIX says blksize_t can be wider than idx_t, check for overflow when copying the former to the latter. * bootstrap.conf (gnulib_modules): Add idx. * lib/cmpbuf.c (block_read, buffer_lcm): Prefer idx_t to size_t. All uses changed. * lib/cmpbuf.c (block_read): Return ptrdiff_t instead of size_t. All uses changed. (buffer_lcm): Help the compiler by checking for negative args, even though they are not allowed. * lib/cmpbuf.h: Include idx.h and stddef.h, for idx_t and ptrdiff_t, so that this include file is self-contained. * src/analyze.c (diff_2_files): * src/cmp.c (main): * src/diff.c, src/io.c: Do not include stdckdint.h here, since system.h now does that. * src/diff3.c (read_diff): * src/io.c (sip): Protect against negative STAT_BLOCKSIZE, or STAT_BLOCKSIZE outside idx_t range. * src/system.h: Include stdckdint.h, idx.h.
22 lines
912 B
C
22 lines
912 B
C
/* Buffer primitives for comparison operations.
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Copyright (C) 2002, 2009-2013, 2015-2023 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "idx.h"
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#include <stddef.h>
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ptrdiff_t block_read (int, char *, idx_t);
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idx_t buffer_lcm (idx_t, idx_t, idx_t) _GL_ATTRIBUTE_CONST;
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