Re: [PATCH 1/1] strerror.3: indicate reasonable buffer size
From: Michael Kerrisk (man-pages) <hidden>
Date: 2017-02-01 20:15:07
On 02/01/2017 07:53 AM, Heinrich Schuchardt wrote:
Add a hint which buffer size is needed for strerror_r() and strerror_l().
Thanks, Heinrich.I applied the patch, but removed mention of "version 2.25", since this buffer size goes *way* back (at least as far back 2.0.6). Cheers, Michael
quoted hunk
Signed-off-by: Heinrich Schuchardt <redacted> --- man3/strerror.3 | 9 +++++++++ 1 file changed, 9 insertions(+)diff --git a/man3/strerror.3 b/man3/strerror.3 index ec758fb..511a4a3 100644 --- a/man3/strerror.3 +++ b/man3/strerror.3@@ -256,6 +256,15 @@ to .B EINVAL if the error number is unknown. C99 and POSIX.1-2008 require the return value to be non-NULL. +.SH NOTES +The GNU C Library, version 2.25 uses a buffer of 1024 characters for +.BR strerror (). +This buffer size therefore should be suffcient to avoid an +.B ERANGE +error in +.BR strerror_r () +and +.BR strerror_l (). .SH SEE ALSO .BR err (3), .BR errno (3),
-- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html