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Rollup merge of #76581 - lcnr:bound-too-generic, r=eddyb

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do not ICE on bound variables, return `TooGeneric` instead

fixes #73260, fixes #74634, fixes #76595

r? @nikomatsakis
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ecstatic-morse 2020-09-21 20:40:47 -07:00 • committed by GitHub
commit 30f1bab7e6
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8 changed files with 128 additions and 6 deletions
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6
compiler/rustc_mir/src/interpret/operand.rs
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@ -549,15 +549,13 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
};
// Early-return cases.
let val_val = match val.val {
ty::ConstKind::Param(_) => throw_inval!(TooGeneric),
ty::ConstKind::Param(_) | ty::ConstKind::Bound(..) => throw_inval!(TooGeneric),
ty::ConstKind::Error(_) => throw_inval!(TypeckError(ErrorReported)),
ty::ConstKind::Unevaluated(def, substs, promoted) => {
let instance = self.resolve(def, substs)?;
return Ok(self.eval_to_allocation(GlobalId { instance, promoted })?.into());
}
ty::ConstKind::Infer(..)
| ty::ConstKind::Bound(..)
| ty::ConstKind::Placeholder(..) => {
ty::ConstKind::Infer(..) | ty::ConstKind::Placeholder(..) => {
span_bug!(self.cur_span(), "const_to_op: Unexpected ConstKind {:?}", val)
}
ty::ConstKind::Value(val_val) => val_val,