* manual/stdio.texi (snprintf): Clarify handling of the trailing

null byte in the output string.
This commit is contained in:
Jeff Law 2012-08-13 13:12:18 -06:00
parent a107920668
commit 42443a4792
2 changed files with 7 additions and 0 deletions

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@ -1,3 +1,8 @@
2012-08-13 Jeff Law <law@redhat.com>
* manual/stdio.texi (snprintf): Clarify handling of the trailing
null byte in the output string.
2012-08-10 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/kernel-features.h

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@ -2341,6 +2341,8 @@ The @code{snprintf} function is similar to @code{sprintf}, except that
the @var{size} argument specifies the maximum number of characters to
produce. The trailing null character is counted towards this limit, so
you should allocate at least @var{size} characters for the string @var{s}.
If @var{size} is zero, nothing, not even the null byte, shall be written and
@var{s} may be a null pointer.
The return value is the number of characters which would be generated
for the given input, excluding the trailing null. If this value is