[PATCH 1/1] strerror.3: indicate reasonable buffer size

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Add a hint which buffer size is needed for
strerror_r() and strerror_l().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@xxxxxx>
---
 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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