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Erase regions before comparing signatures of foreign fns.

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This commit is contained in:
Camille GILLOT 2022-07-18 20:41:27 +02:00
parent 144227dae9
commit 0065929599
2 changed files with 28 additions and 3 deletions
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7
compiler/rustc_lint/src/builtin.rs
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@ -2858,9 +2858,10 @@ impl ClashingExternDeclarations {
let a_poly_sig = a.fn_sig(tcx);
let b_poly_sig = b.fn_sig(tcx);
// As we don't compare regions, skip_binder is fine.
let a_sig = a_poly_sig.skip_binder();
let b_sig = b_poly_sig.skip_binder();
// We don't compare regions, but leaving bound regions around ICEs, so
// we erase them.
let a_sig = tcx.erase_late_bound_regions(a_poly_sig);
let b_sig = tcx.erase_late_bound_regions(b_poly_sig);
(a_sig.abi, a_sig.unsafety, a_sig.c_variadic)
== (b_sig.abi, b_sig.unsafety, b_sig.c_variadic)