[PATCH] wcwidth.3: ATTRIBUTES: Note function that is thread safe with exceptions

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The function wcwidth() is thread safe with exceptions.

Signed-off-by: Peng Haitao <penght@xxxxxxxxxxxxxx>
---
 man3/wcwidth.3 | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/man3/wcwidth.3 b/man3/wcwidth.3
index 87bfca9..b689eed 100644
--- a/man3/wcwidth.3
+++ b/man3/wcwidth.3
@@ -12,7 +12,7 @@
 .\"   Dinkumware C library reference http://www.dinkumware.com/
 .\"   OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
 .\"
-.TH WCWIDTH 3  2011-09-28 "GNU" "Linux Programmer's Manual"
+.TH WCWIDTH 3  2013-11-04 "GNU" "Linux Programmer's Manual"
 .SH NAME
 wcwidth \- determine columns needed for a wide character
 .SH SYNOPSIS
@@ -42,6 +42,14 @@ The
 function returns the number of
 column positions for
 .IR c .
+.SH ATTRIBUTES
+.SS Multithreading (see pthreads(7))
+The
+.BR wcwidth ()
+function is thread-safe with exceptions.
+It can be safely used in multithreaded applications, as long as
+.BR setlocale (3)
+is not called to change the locale.
 .SH CONFORMING TO
 POSIX.1-2001.
 
-- 
1.8.3.1

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