Add text to clarify that the pointer returned by these

functions may be into some part of 'path'.

diff --git a/man3/basename.3 b/man3/basename.3
index 2deb5cc3320018a6106ce0bb57fc6fec9d819bce..1032378e76006d68fdcfd7757238720317f44a70 100644 (file)
--- a/man3/basename.3
+++ b/man3/basename.3
@@ -83,7 +83,11 @@ and
 .BR basename ()
 may modify the contents of 
 .IR path , 
-so copies should be passed to these functions.
+so a copy should be passed when calling one of these functions.
+(Because either function may return a pointer to some part of
+.IR path ,
+the copy should not be freed until the pointer returned by
+the function is no longer required.)
 Furthermore, 
 .BR dirname ()
 and