permit const-fn in macro expansions
This commit is contained in:
parent
710270d9c0
commit
57c75b6b10
|
@ -205,7 +205,16 @@ impl<'a, 'tcx> CheckCrateVisitor<'a, 'tcx> {
|
|||
ret_ty: Ty<'tcx>)
|
||||
-> bool {
|
||||
if let Some(fn_like) = const_eval::lookup_const_fn_by_id(self.tcx, def_id) {
|
||||
if self.mode != Mode::Var && !self.tcx.sess.features.borrow().const_fn {
|
||||
if
|
||||
// we are in a static/const initializer
|
||||
self.mode != Mode::Var &&
|
||||
|
||||
// feature-gate is not enabled
|
||||
!self.tcx.sess.features.borrow().const_fn &&
|
||||
|
||||
// this doesn't come from a macro that has #[allow_internal_unstable]
|
||||
!self.tcx.sess.codemap().span_allows_unstable(expr.span)
|
||||
{
|
||||
self.tcx.sess.span_err(
|
||||
expr.span,
|
||||
&format!("const fns are an unstable feature"));
|
||||
|
|
Loading…
Reference in New Issue