2 // Regression test for #51351 and #52133: In the case of #51351,
3 // late-bound regions (like 'a) that were unused within the arguments of
4 // a function were overlooked and could case an ICE. In the case of #52133,
5 // LBR defined on the creator function needed to be added to the free regions
6 // of the closure, as they were not present in the closure's generic
7 // declarations otherwise.