src/test/ui/issues/issue-27583.rs

   1 // check-pass
   2 // Regression test for issue #27583. Unclear how useful this will be
   3 // going forward, since the issue in question was EXTREMELY sensitive
   4 // to compiler internals (like the precise numbering of nodes), but
   5 // what the hey.
   6
   7 #![allow(warnings)]
   8
   9 use std::cell::Cell;
  10 use std::marker::PhantomData;
  11
  12 pub trait Delegate<'tcx> { }
  13
  14 pub struct InferCtxt<'a, 'tcx: 'a> {
  15     x: PhantomData<&'a Cell<&'tcx ()>>
  16 }
  17
  18 pub struct MemCategorizationContext<'t, 'a: 't, 'tcx : 'a> {
  19     x: &'t InferCtxt<'a, 'tcx>,
  20 }
  21
  22 pub struct ExprUseVisitor<'d, 't, 'a: 't, 'tcx:'a+'d> {
  23     typer: &'t InferCtxt<'a, 'tcx>,
  24     mc: MemCategorizationContext<'t, 'a, 'tcx>,
  25     delegate: &'d mut (Delegate<'tcx>+'d),
  26 }
  27
  28 impl<'d,'t,'a,'tcx> ExprUseVisitor<'d,'t,'a,'tcx> {
  29     pub fn new(delegate: &'d mut Delegate<'tcx>,
  30                typer: &'t InferCtxt<'a, 'tcx>)
  31                -> ExprUseVisitor<'d,'t,'a,'tcx>
  32     {
  33         ExprUseVisitor {
  34             typer: typer,
  35             mc: MemCategorizationContext::new(typer),
  36             delegate: delegate,
  37         }
  38     }
  39 }
  40
  41 impl<'t, 'a,'tcx> MemCategorizationContext<'t, 'a, 'tcx> {
  42     pub fn new(typer: &'t InferCtxt<'a, 'tcx>) -> MemCategorizationContext<'t, 'a, 'tcx> {
  43         MemCategorizationContext { x: typer }
  44     }
  45 }
  46
  47 fn main() { }