// {"kind":"typecheck","original":"18b55723","signature":"swift::constraints::Solution::getFunctionArgApplyInfo(swift::constraints::ConstraintLocator*) const","signatureAssert":"Assertion failed: (Val && \"isa<> used on a null pointer\"), function doit"}
// RUN: not --crash %target-swift-frontend -typecheck %s
// REQUIRES: OS=macosx
import Foundation
func a( CGFloat,  CGFloat?)
a((1.0: (