7c7b22e62c
Fix #106547 by transforming the concrete self into a reference to a trait object before emitting type metadata identifiers for trait methods.
70 lines
2.1 KiB
Rust
70 lines
2.1 KiB
Rust
// Verifies that type metadata identifiers for trait objects are emitted correctly.
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//
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// revisions: aarch64 x86_64
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// [aarch64] compile-flags: --target aarch64-unknown-none
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// [aarch64] needs-llvm-components: aarch64
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// [x86_64] compile-flags: --target x86_64-unknown-none
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// [x86_64] needs-llvm-components:
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// compile-flags: -Cno-prepopulate-passes -Zsanitizer=kcfi -Copt-level=0
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#![crate_type="lib"]
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#![feature(arbitrary_self_types, no_core, lang_items)]
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#![no_core]
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#[lang="sized"]
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trait Sized { }
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#[lang="copy"]
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trait Copy { }
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#[lang="receiver"]
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trait Receiver { }
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#[lang="dispatch_from_dyn"]
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trait DispatchFromDyn<T> { }
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impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<&'a U> for &'a T {}
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#[lang = "unsize"]
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trait Unsize<T: ?Sized> { }
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#[lang = "coerce_unsized"]
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pub trait CoerceUnsized<T: ?Sized> { }
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impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
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#[lang="freeze"]
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trait Freeze { }
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#[lang="drop_in_place"]
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fn drop_in_place_fn<T>() { }
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trait Trait1 {
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fn foo(&self);
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}
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struct Type1;
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impl Trait1 for Type1 {
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fn foo(&self) {
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}
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}
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pub fn foo() {
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let a = Type1;
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a.foo();
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// CHECK-LABEL: define{{.*}}foo{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}}
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// CHECK: call <sanitizer_kcfi_emit_type_metadata_trait_objects::Type1 as sanitizer_kcfi_emit_type_metadata_trait_objects::Trait1>::foo
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}
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pub fn bar() {
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let a = Type1;
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let b = &a as &dyn Trait1;
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b.foo();
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// CHECK-LABEL: define{{.*}}bar{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}}
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// CHECK: call void %0({{\{\}\*|ptr}} align 1 {{%b\.0|%_1}}){{.*}}[ "kcfi"(i32 [[TYPE1:[[:print:]]+]]) ]
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}
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pub fn baz() {
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let a = Type1;
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let b = &a as &dyn Trait1;
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a.foo();
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b.foo();
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// CHECK-LABEL: define{{.*}}baz{{.*}}!{{<unknown kind #36>|kcfi_type}} !{{[0-9]+}}
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// CHECK: call <sanitizer_kcfi_emit_type_metadata_trait_objects::Type1 as sanitizer_kcfi_emit_type_metadata_trait_objects::Trait1>::foo
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// CHECK: call void %0({{\{\}\*|ptr}} align 1 {{%b\.0|%_1}}){{.*}}[ "kcfi"(i32 [[TYPE1:[[:print:]]+]]) ]
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}
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// CHECK: !{{[0-9]+}} = !{i32 [[TYPE1]]}
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