* [PATCH 1/1] strerror.3: indicate reasonable buffer size
@ 2017-01-31 18:53 Heinrich Schuchardt
[not found] ` <1485888838-4055-1-git-send-email-xypron.glpk-Mmb7MZpHnFY@public.gmane.org>
0 siblings, 1 reply; 2+ messages in thread
From: Heinrich Schuchardt @ 2017-01-31 18:53 UTC (permalink / raw)
To: Michael Kerrisk; +Cc: linux-man-u79uwXL29TY76Z2rM5mHXA, Heinrich Schuchardt
Add a hint which buffer size is needed for
strerror_r() and strerror_l().
Signed-off-by: Heinrich Schuchardt <xypron.glpk-Mmb7MZpHnFY@public.gmane.org>
---
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),
--
2.1.4
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2017-01-31 18:53 [PATCH 1/1] strerror.3: indicate reasonable buffer size Heinrich Schuchardt
[not found] ` <1485888838-4055-1-git-send-email-xypron.glpk-Mmb7MZpHnFY@public.gmane.org>
2017-02-01 20:15 ` Michael Kerrisk (man-pages)
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