[lazarus] SIGFPE in fpc_round

[Florian Klaempfl]

Mattias Gaertner wrote:

> Hi,
> 
> I spotted a bug in current fpc 1.9.1 and the Round function.
> I was not able to reproduce the error in a small context or find the bug in
> the fpc bug list. Perhaps the needed context has something to do with the
> gtk libs. So, maybe someone else knows this bug:
> 
> The bug appears in gtkwinapi.inc 7773 in the line "Result:=Round(Value);":
> 
> Program received signal SIGFPE, Arithmetic exception.
> 0x0813ca57 in fpc_round ()
> 
> Value is 0, so rounding should be pretty easy.
> Adding a writeln(Value); in front "fixes" the bug. 
> 
> Any clues/hints?

Can you set a break point before the round call and post an fpu dump 
(including status registers)?