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Add test cases for detecting structural recursion
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struct A<T> { | ||
//~^ ERROR recursive type `A` has infinite size | ||
x: T, | ||
y: A<A<T>>, | ||
} | ||
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struct B { | ||
z: A<usize> | ||
} | ||
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fn main() {} |
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error[E0072]: recursive type `A` has infinite size | ||
--> $DIR/issue-74224.rs:1:1 | ||
| | ||
LL | struct A<T> { | ||
| ^^^^^^^^^^^ recursive type has infinite size | ||
... | ||
LL | y: A<A<T>>, | ||
| ------- recursive without indirection | ||
| | ||
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `A` representable | ||
| | ||
LL | y: Box<A<A<T>>>, | ||
| ^^^^ ^ | ||
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error: aborting due to previous error | ||
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For more information about this error, try `rustc --explain E0072`. |
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@@ -0,0 +1,11 @@ | ||
struct Foo<T> { | ||
//~^ ERROR recursive type `Foo` has infinite size | ||
x: Foo<[T; 1]>, | ||
y: T, | ||
} | ||
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struct Bar { | ||
x: Foo<Bar>, | ||
} | ||
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fn main() {} |
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@@ -0,0 +1,17 @@ | ||
error[E0072]: recursive type `Foo` has infinite size | ||
--> $DIR/issue-84611.rs:1:1 | ||
| | ||
LL | struct Foo<T> { | ||
| ^^^^^^^^^^^^^ recursive type has infinite size | ||
LL | | ||
LL | x: Foo<[T; 1]>, | ||
| ----------- recursive without indirection | ||
| | ||
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `Foo` representable | ||
| | ||
LL | x: Box<Foo<[T; 1]>>, | ||
| ^^^^ ^ | ||
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error: aborting due to previous error | ||
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||
For more information about this error, try `rustc --explain E0072`. |
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struct A<T> { | ||
//~^ ERROR recursive type `A` has infinite size | ||
x: T, | ||
y: B<T>, | ||
} | ||
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struct B<T> { | ||
//~^ ERROR recursive type `B` has infinite size | ||
z: A<T> | ||
} | ||
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struct C<T> { | ||
//~^ ERROR recursive type `C` has infinite size | ||
x: T, | ||
y: Option<Option<D<T>>>, | ||
} | ||
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struct D<T> { | ||
//~^ ERROR recursive type `D` has infinite size | ||
z: Option<Option<C<T>>>, | ||
} | ||
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fn main() {} |
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error[E0072]: recursive type `A` has infinite size | ||
--> $DIR/mutual-struct-recursion.rs:1:1 | ||
| | ||
LL | struct A<T> { | ||
| ^^^^^^^^^^^ recursive type has infinite size | ||
... | ||
LL | y: B<T>, | ||
| ---- recursive without indirection | ||
| | ||
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `A` representable | ||
| | ||
LL | y: Box<B<T>>, | ||
| ^^^^ ^ | ||
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error[E0072]: recursive type `B` has infinite size | ||
--> $DIR/mutual-struct-recursion.rs:7:1 | ||
| | ||
LL | struct B<T> { | ||
| ^^^^^^^^^^^ recursive type has infinite size | ||
LL | | ||
LL | z: A<T> | ||
| ---- recursive without indirection | ||
| | ||
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `B` representable | ||
| | ||
LL | z: Box<A<T>> | ||
| ^^^^ ^ | ||
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error[E0072]: recursive type `C` has infinite size | ||
--> $DIR/mutual-struct-recursion.rs:12:1 | ||
| | ||
LL | struct C<T> { | ||
| ^^^^^^^^^^^ recursive type has infinite size | ||
... | ||
LL | y: Option<Option<D<T>>>, | ||
| -------------------- recursive without indirection | ||
| | ||
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `C` representable | ||
| | ||
LL | y: Box<Option<Option<D<T>>>>, | ||
| ^^^^ ^ | ||
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error[E0072]: recursive type `D` has infinite size | ||
--> $DIR/mutual-struct-recursion.rs:18:1 | ||
| | ||
LL | struct D<T> { | ||
| ^^^^^^^^^^^ recursive type has infinite size | ||
LL | | ||
LL | z: Option<Option<C<T>>>, | ||
| -------------------- recursive without indirection | ||
| | ||
help: insert some indirection (e.g., a `Box`, `Rc`, or `&`) to make `D` representable | ||
| | ||
LL | z: Box<Option<Option<C<T>>>>, | ||
| ^^^^ ^ | ||
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error: aborting due to 4 previous errors | ||
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For more information about this error, try `rustc --explain E0072`. |