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Fix typo in strncat, wcsncat manual entries

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* manual/string.texi (Copying and Concatenation): Fix typos in
sample implementations of strncat and wcsncat, by having them use
the old value of the destination length, not the new one.
This commit is contained in:
Paul Eggert 2015-12-04 15:23:18 -08:00
parent 8f5e8b01a1
commit 5d1d4918ee
2 changed files with 13 additions and 4 deletions
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ChangeLog
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@ -1,3 +1,10 @@
2015-12-04 Paul Eggert <eggert@cs.ucla.edu>
Fix typo in strncat, wcsncat manual entries
* manual/string.texi (Copying and Concatenation): Fix typos in
sample implementations of strncat and wcsncat, by having them use
the old value of the destination length, not the new one.
2015-12-04 Joseph Myers <joseph@codesourcery.com> 2015-12-04 Joseph Myers <joseph@codesourcery.com>
[BZ #16961] [BZ #16961]

10
manual/string.texi
View File

@ -996,8 +996,9 @@ The @code{strncat} function could be implemented like this:
char * char *
strncat (char *to, const char *from, size_t size) strncat (char *to, const char *from, size_t size)
@{ @{
memcpy (to + strlen (to), from, strnlen (from, size)); size_t len = strlen (to);
to[strlen (to) + strnlen (from, size)] = '\0'; memcpy (to + len, from, strnlen (from, size));
to[len + strnlen (from, size)] = '\0';
return to; return to;
@} @}
@end group @end group
@ -1025,8 +1026,9 @@ wchar_t *
wcsncat (wchar_t *restrict wto, const wchar_t *restrict wfrom, wcsncat (wchar_t *restrict wto, const wchar_t *restrict wfrom,
size_t size) size_t size)
@{ @{
memcpy (wto + wcslen (wto), wfrom, wcsnlen (wfrom, size) * sizeof (wchar_t)); size_t len = wcslen (wto);
wto[wcslen (to) + wcsnlen (wfrom, size)] = '\0'; memcpy (wto + len, wfrom, wcsnlen (wfrom, size) * sizeof (wchar_t));
wto[len + wcsnlen (wfrom, size)] = L'\0';
return wto; return wto;
@} @}
@end group @end group