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style: do not overwrite obligations #111723

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Merged
merged 1 commit into from
May 20, 2023
Merged

style: do not overwrite obligations #111723

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13 changes: 6 additions & 7 deletions compiler/rustc_infer/src/infer/opaque_types.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -530,19 +530,18 @@ impl<'tcx> InferCtxt<'tcx> {
// these are the same span, but not in cases like `-> (impl
// Foo, impl Bar)`.
let span = cause.span;

let mut obligations = vec![];
let prev = self.inner.borrow_mut().opaque_types().register(
OpaqueTypeKey { def_id, substs },
OpaqueHiddenType { ty: hidden_ty, span },
origin,
);
if let Some(prev) = prev {
obligations = self
.at(&cause, param_env)
let mut obligations = if let Some(prev) = prev {
self.at(&cause, param_env)
.eq_exp(DefineOpaqueTypes::Yes, a_is_expected, prev, hidden_ty)?
.obligations;
}
.obligations
} else {
Vec::new()
};

let item_bounds = tcx.explicit_item_bounds(def_id);

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