Suggest using memmove(3) if src and dst may overlap.

PR: 33298 Submitted by: Tim J. Robbins <tim@robbins.dropbear.id.au>
2002-01-07 06:03:37 +00:00 · 2002-01-07 06:03:37 +00:00 · b06e8b97a9
commit b06e8b97a9
parent ecfef94723
1 changed files with 7 additions and 2 deletions
--- a/lib/libc/string/memcpy.3
+++ b/lib/libc/string/memcpy.3
@ -82,5 +82,10 @@ is implemented using
 .Xr bcopy 3 ,
 and therefore the strings may overlap.
 On other systems, copying overlapping strings may produce surprises.
-A simpler solution is to not use
-.Fn memcpy .
+Programs intended to be portable should use
+.Xr memmove 3
+when
+.Fa src
+and
+.Fa dst
+may overlap.