From: Ullrich von Bassewitz (uz_at_musoftware.de)
Date: 2003-10-10 21:32:41
On Fri, Oct 10, 2003 at 08:20:29PM +0200, Groepaz wrote:
> wow....nice one :) all of the tests work again (ie, no more crashes) and
> additionally 5 of 9 previously failing tests even return the correct
> result(s) :=) lemme see if i can isolate the remaining problem(s) .... :)
Maybe it's easier if you send me the test code?
> oh one somewhat unrelated bug (slight chance its related to signed comparison
> though ;=P) ... (if that even is one - i think i remember this
> beeing a know limitation...mmmh - whatever :))
[...]
No, I've generated undefined behaviour in the type conversion code. Shame on
me, I should know - and it was discussed a few months ago in de.comp.lang.c:
Shifting a variable by the number of bits it has does not create zero but is
undefined. So
Expr->ConstVal |= ((~0L) << NewBits);
is invalid if NewBits is the number of bits in a long. This is what caused the
problem.
Thanks a lot!
Uz
--
Ullrich von Bassewitz uz_at_musoftware.de
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