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polymorphize: don't check foreign items

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Foreign items do not have bodies and so cannot be polymorphized.

Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2021-10-01 14:40:42 +00:00
parent 4e4942dfa6
commit 50433a0bf4
1 changed files with 5 additions and 0 deletions
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5
compiler/rustc_monomorphize/src/polymorphize.rs
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@ -52,6 +52,11 @@ fn unused_generic_params(tcx: TyCtxt<'_>, def_id: DefId) -> FiniteBitSet<u32> {
return FiniteBitSet::new_empty();
}
// Exit early for foreign items, these have no bodies to analyze.
if tcx.is_foreign_item(def_id) {
return FiniteBitSet::new_empty();
}
// Exit early when there is no MIR available.
let context = tcx.hir().body_const_context(def_id.expect_local());
match context {