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Rollup merge of #119725 - compiler-errors:has_effect_param, r=fmease

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Add helper for when we want to know if an item has a host param

r? ````@fmease```` since you're a good reviewer and no good deed goes unpunished

This helper will see far more usages as built-in traits get constified.
This commit is contained in:
Matthias Krüger 2024-01-09 00:19:36 +01:00 • committed by GitHub
commit cd93114deb
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4 changed files with 13 additions and 10 deletions
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4
compiler/rustc_const_eval/src/transform/check_consts/qualifs.rs
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@ -157,9 +157,7 @@ impl Qualif for NeedsNonConstDrop {
// FIXME(effects): If `destruct` is not a `const_trait`,
// or effects are disabled in this crate, then give up.
let destruct_def_id = cx.tcx.require_lang_item(LangItem::Destruct, Some(cx.body.span));
if cx.tcx.generics_of(destruct_def_id).host_effect_index.is_none()
|| !cx.tcx.features().effects
{
if !cx.tcx.has_host_param(destruct_def_id) || !cx.tcx.features().effects {
return NeedsDrop::in_any_value_of_ty(cx, ty);
}