[PATCH] getpw.3: ATTRIBUTES: Note function that is thread-safe

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After research, We think getpw() is thread-safe. But, there
is not marking of getpw() in glibc document.

Signed-off-by: Zeng Linggang <zenglg.jy@xxxxxxxxxxxxxx>
---
 man3/getpw.3 | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/man3/getpw.3 b/man3/getpw.3
index 68402f1..21fb4e9 100644
--- a/man3/getpw.3
+++ b/man3/getpw.3
@@ -103,6 +103,19 @@ structure.
 .TP
 .I /etc/passwd
 password database file
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.TS
+allbox;
+lb lb lb
+l l l.
+Interface	Attribute	Value
+T{
+.BR getpw ()
+T}	Thread safety	MT-Safe locale
+.TE
+
 .SH CONFORMING TO
 SVr2.
 .SH BUGS
-- 
1.9.3

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