[Firebird-test] Minus Plus Minus = ???

[Peter <pvh...@ro...>]

I came up the follwing abnormallity:

Ammount = 0
M_mut=-3 (negative)
Update  stock  set  ammount= ammount- M_mut where  Art_no=1050

In Firebird 1.5-7    result => ammount = -3

in InterBase         result => ammount = +3

With

Update  stock  set  ammount= ammount- (M_mut) where  Art_no=1050

I get the proper result (-3).

Is this a known bug?

Thanks,



Peter