Module Name: src
Committed By: christos
Date: Wed Apr 1 15:20:58 UTC 2015
Modified Files:
src/lib/libc/string: strcpy.3
Log Message:
clarify what happens when strings overlap.
To generate a diff of this commit:
cvs rdiff -u -r1.20 -r1.21 src/lib/libc/string/strcpy.3
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/lib/libc/string/strcpy.3
diff -u src/lib/libc/string/strcpy.3:1.20 src/lib/libc/string/strcpy.3:1.21
--- src/lib/libc/string/strcpy.3:1.20 Sat May 2 05:37:32 2009
+++ src/lib/libc/string/strcpy.3 Wed Apr 1 11:20:58 2015
@@ -30,9 +30,9 @@
.\" SUCH DAMAGE.
.\"
.\" from: @(#)strcpy.3 8.1 (Berkeley) 6/4/93
-.\" $NetBSD: strcpy.3,v 1.20 2009/05/02 09:37:32 wiz Exp $
+.\" $NetBSD: strcpy.3,v 1.21 2015/04/01 15:20:58 christos Exp $
.\"
-.Dd May 1, 2009
+.Dd April 1, 2015
.Dt STRCPY 3
.Os
.Sh NAME
@@ -92,6 +92,10 @@ Otherwise,
is
.Em not
terminated.
+.Pp
+For portability the source and destination strings should not overlap, because
+implementations are allowed to optimize character movement and the standard
+specify that the results are undefined if they do.
.Sh RETURN VALUES
The
.Fn strcpy
