On Tue, Oct 03, 2006 at 01:03:59PM +0200, Tomas Janousek wrote:
It crashes with
let test x = test x + 1 in test 1
but does not with
let test x = 1 + test x in test 1
The same applies for factorial calculation like:
crash: let fac x = fac (x - 1) * x in fac (-1)
stack overflow: let
Wed, Oct 04, 2006 at 09:07:40AM +0100 Ross Paterson napsal:
It's a documented bug (Other bugs in Hugs in the User's Guide): the
former versions overflow the C stack (SEGV), while the latter overflow
the Hugs stack (nice error message).
It's interesting that November 1999 on IRIX works ok, but
Package: hugs
Version: 98.200503.08-4
Severity: normal
It crashes with
let test x = test x + 1 in test 1
but does not with
let test x = 1 + test x in test 1
The same applies for factorial calculation like:
crash: let fac x = fac (x - 1) * x in fac (-1)
stack overflow: let fac x = x * fac
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