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Don't elaborate associated types with Sized bounds in trait_object_ty in cfi

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This commit is contained in:
Michael Goulet 2024-07-17 18:17:30 -04:00
parent 3de0a7c716
commit 29f5d8f00f
2 changed files with 39 additions and 0 deletions
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1
compiler/rustc_sanitizers/src/cfi/typeid/itanium_cxx_abi/transform.rs
View File

@ -230,6 +230,7 @@ fn trait_object_ty<'tcx>(tcx: TyCtxt<'tcx>, poly_trait_ref: ty::PolyTraitRef<'tc
tcx.associated_items(super_poly_trait_ref.def_id())
.in_definition_order()
.filter(|item| item.kind == ty::AssocKind::Type)
.filter(|item| !tcx.generics_require_sized_self(item.def_id))
.map(move |assoc_ty| {
super_poly_trait_ref.map_bound(|super_trait_ref| {
let alias_ty =

38
tests/ui/sanitizer/cfi-sized-associated-ty.rs Normal file
View File

@ -0,0 +1,38 @@
// Check that we only elaborate non-`Self: Sized` associated types when
// erasing the receiver from trait ref.
//@ revisions: cfi kcfi
// FIXME(#122848) Remove only-linux once OSX CFI binaries work
//@ only-linux
//@ [cfi] needs-sanitizer-cfi
//@ [kcfi] needs-sanitizer-kcfi
//@ compile-flags: -C target-feature=-crt-static
//@ [cfi] compile-flags: -C codegen-units=1 -C lto -C prefer-dynamic=off -C opt-level=0
//@ [cfi] compile-flags: -Z sanitizer=cfi
//@ [kcfi] compile-flags: -Z sanitizer=kcfi
//@ [kcfi] compile-flags: -C panic=abort -C prefer-dynamic=off
//@ run-pass
trait Foo {
type Bar<'a>
where
Self: Sized;
fn test(&self);
}
impl Foo for () {
type Bar<'a> = ()
where
Self: Sized;
fn test(&self) {}
}
fn test(x: &dyn Foo) {
x.test();
}
fn main() {
test(&());
}