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581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
96 lines
2.0 KiB
C
96 lines
2.0 KiB
C
/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <memcopy.h>
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char *
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__strncat_chk (char *s1, const char *s2, size_t n, size_t s1len)
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{
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char c;
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char *s = s1;
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/* Find the end of S1. */
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do
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{
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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c = *s1++;
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}
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while (c != '\0');
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/* Make S1 point before next character, so we can increment
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it while memory is read (wins on pipelined cpus). */
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++s1len;
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s1 -= 2;
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if (n >= 4)
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{
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size_t n4 = n >> 2;
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do
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{
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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c = *s2++;
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*++s1 = c;
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if (c == '\0')
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return s;
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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c = *s2++;
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*++s1 = c;
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if (c == '\0')
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return s;
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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c = *s2++;
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*++s1 = c;
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if (c == '\0')
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return s;
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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c = *s2++;
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*++s1 = c;
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if (c == '\0')
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return s;
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} while (--n4 > 0);
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n &= 3;
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}
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while (n > 0)
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{
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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c = *s2++;
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*++s1 = c;
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if (c == '\0')
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return s;
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n--;
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}
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if (c != '\0')
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{
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if (__glibc_unlikely (s1len-- == 0))
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__chk_fail ();
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*++s1 = '\0';
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}
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return s;
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}
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