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Fix #4855: handle bot in regionck

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This commit is contained in:
Niko Matsakis 2013-03-26 09:41:27 -04:00
parent 7f5d7e1c2e
commit 5f52669296
1 changed files with 1 additions and 1 deletions
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2
src/librustc/middle/typeck/check/regionck.rs
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@ -615,7 +615,7 @@ pub mod guarantor {
// expressions, both of which always yield a region variable, so
// mk_subr should never fail.
let rptr_ty = rcx.resolve_node_type(id);
if !ty::type_is_error(rptr_ty) {
if !ty::type_is_error(rptr_ty) && !ty::type_is_bot(rptr_ty) {
let tcx = rcx.fcx.ccx.tcx;
debug!("rptr_ty=%s", ty_to_str(tcx, rptr_ty));
let r = ty::ty_region(tcx, span, rptr_ty);