------- Comment #13 from law at redhat dot com 2006-05-01 16:36 ------- The overflow check for multiplication is totally bogus. The right way to check for overflow of an integer multiplication is to use division.
ie, given res = a * b; Divide res by a, if the result is less than b, then the multiplication overlowed. [ Note, assumes a != 0. ] In fact, any result other than "b" is bad. Anyway, once we muck up the overflow status of the multiplication we lose. Jeff -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27364
