projects / apple / libc.git / blame
| Commit | Line | Data |
|---|---|---|
| 9385eb3d A |
1 | --- memcpy.3.orig Tue May 20 15:23:54 2003 |
| 2 | +++ memcpy.3 Sat Jun 21 06:17:05 2003 | |
| 3 | @@ -58,6 +58,18 @@ | |
| 4 | .Fa src | |
| 5 | to string | |
| 6 | .Fa dst . | |
| 7 | +If | |
| 8 | +.Fa src | |
| 9 | +and | |
| 10 | +.Fa dst | |
| 11 | +overlap, behaviour is undefined. | |
| 12 | +Applications in which | |
| 13 | +.Fa src | |
| 14 | +and | |
| 15 | +.Fa dst | |
| 16 | +might overlap should use | |
| 17 | +.Xr memmove 3 | |
| 18 | +instead. | |
| 19 | .Sh RETURN VALUES | |
| 20 | The | |
| 21 | .Fn memcpy | |
| 22 | @@ -75,17 +87,3 @@ | |
| 23 | function | |
| 24 | conforms to | |
| 25 | .St -isoC . | |
| 26 | -.Sh BUGS | |
| 27 | -In this implementation | |
| 28 | -.Fn memcpy | |
| 29 | -is implemented using | |
| 30 | -.Xr bcopy 3 , | |
| 31 | -and therefore the strings may overlap. | |
| 32 | -On other systems, copying overlapping strings may produce surprises. | |
| 33 | -Programs intended to be portable should use | |
| 34 | -.Xr memmove 3 | |
| 35 | -when | |
| 36 | -.Fa src | |
| 37 | -and | |
| 38 | -.Fa dst | |
| 39 | -may overlap. |