gcdx infinite loop

[fingolfin]

julia> R, t = ZZ[:t]

julia> f = 57*t^6 + 63*t^5 + 299*t^4 + 753*t^3 + 511*t^2 + 292*t + 83

julia> g = 225*t^2 + 299*t + 178

julia> gcd(f,g)
1

julia> gcdx(f,g)  # <- hangs

does not terminate (at least in general, of course I did not test all cases).

Not sure if we can do something about it, but my students (who stumbled into this by accident) were surprised.

[thofma]

It should be an error. The method should be removed.