a maybe intentional oddity of sleep(1)

[x]

$ sleep 123.456 & ps | grep sleep
[1] 17045
17045 p5  S       0:00.00 sleep 123
$

Index: sleep.c
===================================================================
RCS file: /cvs/src/bin/sleep/sleep.c,v
retrieving revision 1.17
diff -u -r1.17 sleep.c
--- sleep.c     16 Sep 2004 08:35:49 -0000      1.17
+++ sleep.c     13 Feb 2009 19:52:10 -0000
@@ -95,7 +95,7 @@

        /* Handle fractions of a second */
        if (*cp == '.') {
-               *cp++ = '\0';
+               cp++;
                for (i = 100000000; i > 0; i /= 10) {
                        if (*cp == '\0')
                                break;