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Strengthen prohibition against overlapping in strcpy(3).

This commit is contained in:
riastradh 2015-04-01 20:18:17 +00:00
parent 7153b8dc81
commit 3a68faac74
1 changed files with 6 additions and 4 deletions
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10
lib/libc/string/strcpy.3
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@ -30,7 +30,7 @@
.\" SUCH DAMAGE.
.\"
.\" from: @(#)strcpy.3 8.1 (Berkeley) 6/4/93
.\" $NetBSD: strcpy.3,v 1.22 2015/04/01 15:45:00 christos Exp $
.\" $NetBSD: strcpy.3,v 1.23 2015/04/01 20:18:17 riastradh Exp $
.\"
.Dd April 1, 2015
.Dt STRCPY 3
@ -93,9 +93,11 @@ 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
specifies that the results are undefined if they do.
The strings
.Fa src
and
.Fa dst
may not overlap.
.Sh RETURN VALUES
The
.Fn strcpy