package: pari
version: 2.7.0

I can also reproduce this problem with version 2.6.0 and the 31 March 2014 snapshot (gp-gmp-git21a4b22.exe). This was done on a laptop running Windows 8.

Note that the following takes a long time to run and to reach the point at which it crashes. With Pari 2.6.0, it took 3 hours and 7 minutes with an Intel Core i7-3630QM CPU, 2.40GHz processor.

When running the function below, I get the following output:
? test_heegner()
[1, 84.55272566332703022158237912]
  ***   at top-level: test_heegner()
  ***                 ^--------------
  ***   in function test_heegner: ...analyticrank(ell));print(ellheegner(ell))
  ***                                                         ^----------------
  *** ellheegner: overflow in t_INT-->long assignment.
  ***   Break loop: type 'break' to go back to GP prompt
break> break

\\ must set allocatemem(1600*10^6)

test_heegner() = {
    ell=ellinit([1,0,0,-114315246000239570,14876622271653037912080900]);
    print(ellanalyticrank(ell));
    print(ellheegner(ell));
}