id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	difficulty
142	move-memory! accepts negative offsets	Jim Ursetto	felix winkelmann	"And will clobber memory.  It does detect the error when the offsets are too large though.
{{{
(define b (string->blob (make-string 10 #\nul)))
(move-memory! ""foo"" b 3 0 7)      ; ok
,d b
blob of size 10:
   0: 00 00 00 00 00 00 00 66 6f 6f      .......foo

(move-memory! ""foo"" b 3 0 8)      ; error (out of range)
(move-memory! ""xyz"" b 3 -1 0)     ; succeeds
,d b
blob of size 10:
   0: 42 78 79 00 00 00 00 66 6f 6f      Byz....foo

(move-memory! ""xyz"" b 3 0 -1)     ; succeeds
,d b
unknown object
}}}"	defect	closed	major		core libraries	4.2.x	fixed