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rustc_mir: disallow non-monomorphic reifications.
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@ -1,4 +1,4 @@
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use rustc::ty::{self, Ty, TypeAndMut};
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use rustc::ty::{self, Ty, TypeAndMut, TypeFoldable};
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use rustc::ty::layout::{self, TyLayout, Size};
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use rustc::ty::adjustment::{PointerCast};
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use syntax::ast::FloatTy;
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@ -36,6 +36,11 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
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// The src operand does not matter, just its type
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match src.layout.ty.sty {
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ty::FnDef(def_id, substs) => {
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// All reifications must be monomorphic, bail out otherwise.
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if src.layout.ty.needs_subst() {
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throw_inval!(TooGeneric);
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}
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if self.tcx.has_attr(def_id, sym::rustc_args_required_const) {
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bug!("reifying a fn ptr that requires const arguments");
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}
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@ -62,6 +67,11 @@ impl<'mir, 'tcx, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
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// The src operand does not matter, just its type
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match src.layout.ty.sty {
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ty::Closure(def_id, substs) => {
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// All reifications must be monomorphic, bail out otherwise.
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if src.layout.ty.needs_subst() {
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throw_inval!(TooGeneric);
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}
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let instance = ty::Instance::resolve_closure(
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*self.tcx,
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def_id,
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