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Update from gnulib

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This commit is contained in:
Paul Eggert 2024-06-30 11:31:55 +01:00
parent c6a052f2fe
commit 7f89fe8a34
1 changed files with 10 additions and 6 deletions
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16
lib/strnlen.c
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@ -1,6 +1,5 @@
/* Find the length of STRING, but scan at most MAXLEN characters.
Copyright (C) 2005-2007, 2009-2024 Free Software Foundation, Inc.
Written by Simon Josefsson.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
@ -19,12 +18,17 @@
#include <string.h>
/* Find the length of STRING, but scan at most MAXLEN characters.
If no '\0' terminator is found in that many characters, return MAXLEN. */
/* Find the length of S, but scan at most MAXLEN bytes.
S must be a string if it starts with fewer than MAXLEN initialized bytes.
If no '\0' terminator is found in that many bytes, return MAXLEN. */
size_t
strnlen (const char *string, size_t maxlen)
strnlen (const char *s, size_t maxlen)
{
const char *end = memchr (string, '\0', maxlen);
return end ? (size_t) (end - string) : maxlen;
/* Do not use memchr, because on some platforms memchr has
undefined behavior if MAXLEN exceeds the number of bytes in S. */
size_t i;
for (i = 0; i < maxlen && s[i]; i++)
continue;
return i;
}