Infinite loop when evaluating polynomial over univariate fraction field

[johanrosenkilde]

The last line of the following snipped runs until a maximum recursion depth exception is raised:

R.<a> = QQ[]
QR = R.fraction_field()
S.<b> = QR[]
p = b+1
print p(1)

Component: PLEASE CHANGE

Keywords: polynomial, fractionfield, multivariate

Issue created by migration from https://trac.sagemath.org/ticket/24547

[johanrosenkilde]

comment:1

The following line also loops:

p(R(1))

but this line works:

p(S(1))

So it's a coercion thing...