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| author | Matthew Maurer <mmaurer@google.com> | 2024-03-03 03:51:05 +0000 |
|---|---|---|
| committer | Matthew Maurer <mmaurer@google.com> | 2024-03-22 23:02:05 +0000 |
| commit | dec36c3d6eca67c900b7bdf03bd8d9dd68c4aa34 (patch) | |
| tree | e34d4d81ee35aa67a1efd9e93e1821f8c4a14389 /tests/codegen | |
| parent | 85e449a3237e82c9ade8936a82bd4fc64cfe1057 (diff) | |
| download | rust-dec36c3d6eca67c900b7bdf03bd8d9dd68c4aa34.tar.gz rust-dec36c3d6eca67c900b7bdf03bd8d9dd68c4aa34.zip | |
CFI: Support self_cell-like recursion
Current `transform_ty` attempts to avoid cycles when normalizing
`#[repr(transparent)]` types to their interior, but runs afoul of this
pattern used in `self_cell`:
```
struct X<T> {
x: u8,
p: PhantomData<T>,
}
#[repr(transparent)]
struct Y(X<Y>);
```
When attempting to normalize Y, it will still cycle indefinitely. By
using a types-visited list, this will instead get expanded exactly
one layer deep to X<Y>, and then stop, not attempting to normalize `Y`
any further.
Diffstat (limited to 'tests/codegen')
| -rw-r--r-- | tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-repr-transparent-types.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-repr-transparent-types.rs b/tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-repr-transparent-types.rs index 6f47f5e3355..1332338b26a 100644 --- a/tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-repr-transparent-types.rs +++ b/tests/codegen/sanitizer/cfi/emit-type-metadata-id-itanium-cxx-abi-repr-transparent-types.rs @@ -34,6 +34,12 @@ pub struct Bar(i32); #[repr(transparent)] pub struct Type3<T>(T); +// repr(transparent) wrapper which engages in self-reference +#[repr(transparent)] +pub struct Type4(Type4Helper<Type4>); +#[repr(transparent)] +pub struct Type4Helper<T>(*mut T); + pub fn foo1(_: Type1) { } // CHECK: define{{.*}}4foo1{{.*}}!type ![[TYPE1:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} pub fn foo2(_: Type1, _: Type1) { } @@ -52,6 +58,13 @@ pub fn foo8(_: Type3<Bar>, _: Type3<Bar>) { } // CHECK: define{{.*}}4foo8{{.*}}!type ![[TYPE8:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} pub fn foo9(_: Type3<Bar>, _: Type3<Bar>, _: Type3<Bar>) { } // CHECK: define{{.*}}4foo9{{.*}}!type ![[TYPE9:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} +pub fn foo10(_: Type4) { } +// CHECK: define{{.*}}5foo10{{.*}}!type ![[TYPE10:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} +pub fn foo11(_: Type4, _: Type4) { } +// CHECK: define{{.*}}5foo11{{.*}}!type ![[TYPE11:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} +pub fn foo12(_: Type4, _: Type4, _: Type4) { } +// CHECK: define{{.*}}5foo12{{.*}}!type ![[TYPE12:[0-9]+]] !type !{{[0-9]+}} !type !{{[0-9]+}} !type !{{[0-9]+}} + // CHECK: ![[TYPE1]] = !{i64 0, !"_ZTSFvu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}3FooE"} // CHECK: ![[TYPE2]] = !{i64 0, !"_ZTSFvu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}3FooS_E"} @@ -62,3 +75,6 @@ pub fn foo9(_: Type3<Bar>, _: Type3<Bar>, _: Type3<Bar>) { } // CHECK: ![[TYPE7]] = !{i64 0, !"_ZTSFvu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}3BarE"} // CHECK: ![[TYPE8]] = !{i64 0, !"_ZTSFvu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}3BarS_E"} // CHECK: ![[TYPE9]] = !{i64 0, !"_ZTSFvu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}3BarS_S_E"} +// CHECK: ![[TYPE10]] = !{i64 0, !"_ZTSFvPu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}5Type4E"} +// CHECK: ![[TYPE11]] = !{i64 0, !"_ZTSFvPu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}5Type4S0_E"} +// CHECK: ![[TYPE12]] = !{i64 0, !"_ZTSFvPu{{[0-9]+}}NtC{{[[:print:]]+}}_{{[[:print:]]+}}5Type4S0_S0_E"} |