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2 changed files with 6 additions and 2 deletions
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@ -3,7 +3,11 @@ use rustc_middle::ty::{self, Ty, TyCtxt, TypeFoldable, TypeVisitor};
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use std::convert::TryInto;
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use std::convert::TryInto;
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use std::ops::ControlFlow;
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use std::ops::ControlFlow;
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/// Returns `true` if a used generic parameter requires substitution.
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/// Checks whether a type contains generic parameters which require substitution.
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///
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/// In case it does, returns a `TooGeneric` const eval error. Note that due to polymorphization
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/// types may be "concrete enough" even though they still contain generic parameters in
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/// case these parameters are unused.
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crate fn ensure_monomorphic_enough<'tcx, T>(tcx: TyCtxt<'tcx>, ty: T) -> InterpResult<'tcx>
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crate fn ensure_monomorphic_enough<'tcx, T>(tcx: TyCtxt<'tcx>, ty: T) -> InterpResult<'tcx>
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where
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where
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T: TypeFoldable<'tcx>,
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T: TypeFoldable<'tcx>,
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@ -43,7 +43,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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let item_def_id = self.tcx.hir().local_def_id(item_id);
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let item_def_id = self.tcx.hir().local_def_id(item_id);
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// This attribute causes us to dump some writeback information
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// This attribute causes us to dump some writeback information
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// in the form of errors, which is uSymbol for unit tests.
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// in the form of errors, which is used for unit tests.
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let rustc_dump_user_substs =
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let rustc_dump_user_substs =
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self.tcx.has_attr(item_def_id.to_def_id(), sym::rustc_dump_user_substs);
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self.tcx.has_attr(item_def_id.to_def_id(), sym::rustc_dump_user_substs);
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