Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

8 files changed, 476 insertions, 0 deletions

diff --git a/src/test/ui/stability-attribute/auxiliary/allowed-through-unstable-core.rs b/src/test/ui/stability-attribute/auxiliary/allowed-through-unstable-core.rs
new file mode 100644
index 000000000..b597009a3
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/allowed-through-unstable-core.rs
@@ -0,0 +1,14 @@
+#![crate_type = "lib"]
+#![feature(staged_api)]
+#![feature(rustc_attrs)]
+#![stable(feature = "stable_test_feature", since = "1.2.0")]
+
+#[unstable(feature = "unstable_test_feature", issue = "1")]
+pub mod unstable_module {
+    #[stable(feature = "stable_test_feature", since = "1.2.0")]
+    #[rustc_allowed_through_unstable_modules]
+    pub trait OldStableTraitAllowedThoughUnstable {}
+
+    #[stable(feature = "stable_test_feature", since = "1.2.0")]
+    pub trait NewStableTraitNotAllowedThroughUnstable {}
+}
diff --git a/src/test/ui/stability-attribute/auxiliary/lint-stability-reexport.rs b/src/test/ui/stability-attribute/auxiliary/lint-stability-reexport.rs
new file mode 100644
index 000000000..9884731d5
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/lint-stability-reexport.rs
@@ -0,0 +1,9 @@
+#![crate_type = "lib"]
+#![feature(staged_api)]
+#![stable(feature = "lint_stability", since = "1.0.0")]
+
+extern crate lint_stability;
+
+// Re-exporting without enabling the feature "unstable_test_feature" in this crate
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub use lint_stability::unstable_text;
diff --git a/src/test/ui/stability-attribute/auxiliary/lint-stability.rs b/src/test/ui/stability-attribute/auxiliary/lint-stability.rs
new file mode 100644
index 000000000..99c29dcdd
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/lint-stability.rs
@@ -0,0 +1,188 @@
+#![crate_name="lint_stability"]
+#![crate_type = "lib"]
+#![feature(staged_api)]
+#![feature(associated_type_defaults)]
+#![stable(feature = "lint_stability", since = "1.0.0")]
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub fn deprecated() {}
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub fn deprecated_text() {}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "99.99.99", note = "text")]
+pub fn deprecated_future() {}
+
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub fn deprecated_unstable() {}
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub fn deprecated_unstable_text() {}
+
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub fn unstable() {}
+#[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
+pub fn unstable_text() {}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+pub fn stable() {}
+#[stable(feature = "rust1", since = "1.0.0")]
+pub fn stable_text() {}
+
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct MethodTester;
+
+impl MethodTester {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    pub fn method_deprecated(&self) {}
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    pub fn method_deprecated_text(&self) {}
+
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    pub fn method_deprecated_unstable(&self) {}
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    pub fn method_deprecated_unstable_text(&self) {}
+
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    pub fn method_unstable(&self) {}
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
+    pub fn method_unstable_text(&self) {}
+
+    #[stable(feature = "rust1", since = "1.0.0")]
+    pub fn method_stable(&self) {}
+    #[stable(feature = "rust1", since = "1.0.0")]
+    pub fn method_stable_text(&self) {}
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub trait Trait {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    fn trait_deprecated(&self) {}
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    fn trait_deprecated_text(&self) {}
+
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    fn trait_deprecated_unstable(&self) {}
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    fn trait_deprecated_unstable_text(&self) {}
+
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    fn trait_unstable(&self) {}
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
+    fn trait_unstable_text(&self) {}
+
+    #[stable(feature = "rust1", since = "1.0.0")]
+    fn trait_stable(&self) {}
+    #[stable(feature = "rust1", since = "1.0.0")]
+    fn trait_stable_text(&self) {}
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub trait TraitWithAssociatedTypes {
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    type TypeUnstable = u8;
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    type TypeDeprecated = u8;
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+impl Trait for MethodTester {}
+
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub trait UnstableTrait { fn dummy(&self) { } }
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub trait DeprecatedTrait {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")] fn dummy(&self) { }
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub struct DeprecatedStruct {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
+}
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub struct DeprecatedUnstableStruct {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
+}
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub struct UnstableStruct {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
+}
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct StableStruct {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
+}
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub enum UnstableEnum {}
+#[stable(feature = "rust1", since = "1.0.0")]
+pub enum StableEnum {}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub struct DeprecatedUnitStruct;
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub struct DeprecatedUnstableUnitStruct;
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub struct UnstableUnitStruct;
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct StableUnitStruct;
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    DeprecatedVariant,
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    #[deprecated(since = "1.0.0", note = "text")]
+    DeprecatedUnstableVariant,
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
+    UnstableVariant,
+
+    #[stable(feature = "rust1", since = "1.0.0")]
+    StableVariant,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub struct DeprecatedTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+#[deprecated(since = "1.0.0", note = "text")]
+pub struct DeprecatedUnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
+#[unstable(feature = "unstable_test_feature", issue = "none")]
+pub struct UnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
+#[stable(feature = "rust1", since = "1.0.0")]
+pub struct StableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[macro_export]
+macro_rules! macro_test {
+    () => (deprecated());
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[macro_export]
+macro_rules! macro_test_arg {
+    ($func:expr) => ($func);
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+#[macro_export]
+macro_rules! macro_test_arg_nested {
+    ($func:ident) => (macro_test_arg!($func()));
+}
diff --git a/src/test/ui/stability-attribute/auxiliary/stability-attribute-implies.rs b/src/test/ui/stability-attribute/auxiliary/stability-attribute-implies.rs
new file mode 100644
index 000000000..468be1bc1
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/stability-attribute-implies.rs
@@ -0,0 +1,8 @@
+#![feature(staged_api)]
+#![stable(feature = "stability_attribute_implies", since = "1.0.0")]
+
+#[stable(feature = "foo", since = "1.62.0")]
+pub fn foo() {}
+
+#[unstable(feature = "foobar", issue = "1", implied_by = "foo")]
+pub fn foobar() {}
diff --git a/src/test/ui/stability-attribute/auxiliary/stability_attribute_issue.rs b/src/test/ui/stability-attribute/auxiliary/stability_attribute_issue.rs
new file mode 100644
index 000000000..4e5333289
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/stability_attribute_issue.rs
@@ -0,0 +1,9 @@
+#![feature(staged_api)]
+#![stable(feature = "stable_test_feature", since = "1.2.0")]
+
+
+#[unstable(feature = "unstable_test_feature", issue = "1")]
+pub fn unstable() {}
+
+#[unstable(feature = "unstable_test_feature", reason = "message", issue = "2")]
+pub fn unstable_msg() {}
diff --git a/src/test/ui/stability-attribute/auxiliary/stable-in-unstable-core.rs b/src/test/ui/stability-attribute/auxiliary/stable-in-unstable-core.rs
new file mode 100644
index 000000000..e45b00f99
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/stable-in-unstable-core.rs
@@ -0,0 +1,8 @@
+#![feature(staged_api)]
+#![stable(feature = "stable_test_feature", since = "1.2.0")]
+
+#[unstable(feature = "unstable_test_feature", issue = "1")]
+pub mod new_unstable_module {
+    #[stable(feature = "stable_test_feature", since = "1.2.0")]
+    pub trait OldTrait {}
+}
diff --git a/src/test/ui/stability-attribute/auxiliary/stable-in-unstable-std.rs b/src/test/ui/stability-attribute/auxiliary/stable-in-unstable-std.rs
new file mode 100644
index 000000000..28ad8c28d
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/stable-in-unstable-std.rs
@@ -0,0 +1,11 @@
+#![feature(staged_api)]
+#![feature(unstable_test_feature)]
+#![stable(feature = "stable_test_feature", since = "1.2.0")]
+
+extern crate stable_in_unstable_core;
+
+#[stable(feature = "stable_test_feature", since = "1.2.0")]
+pub mod old_stable_module {
+    #[stable(feature = "stable_test_feature", since = "1.2.0")]
+    pub use stable_in_unstable_core::new_unstable_module::OldTrait;
+}
diff --git a/src/test/ui/stability-attribute/auxiliary/unstable_generic_param.rs b/src/test/ui/stability-attribute/auxiliary/unstable_generic_param.rs
new file mode 100644
index 000000000..1d6a6bd4e
--- /dev/null
+++ b/src/test/ui/stability-attribute/auxiliary/unstable_generic_param.rs
@@ -0,0 +1,229 @@
+#![crate_type = "lib"]
+#![feature(staged_api)]
+#![stable(feature = "stable_test_feature", since = "1.0.0")]
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub trait Trait1<#[unstable(feature = "unstable_default", issue = "none")] T = ()> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    fn foo() -> T;
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub trait Trait2<#[unstable(feature = "unstable_default", issue = "none")] T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    fn foo() -> T;
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub trait Trait3<T = ()> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    fn foo() -> T;
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Struct1<#[unstable(feature = "unstable_default", issue = "none")] T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field: T,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Struct2<T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field: T,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Struct3<A = isize, #[unstable(feature = "unstable_default", issue = "none")] B = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field1: A,
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field2: B,
+}
+
+#[deprecated(since = "1.1.0", note = "test")]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Struct4<A = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field: A,
+}
+
+#[deprecated(since = "1.1.0", note = "test")]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Struct5<#[unstable(feature = "unstable_default", issue = "none")] A = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field: A,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Struct6<#[unstable(feature = "unstable_default6", issue = "none")] T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub field: T,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const STRUCT1: Struct1 = Struct1 { field: 1 };
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const STRUCT2: Struct2 = Struct2 { field: 1 };
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const STRUCT3: Struct3 = Struct3 { field1: 1, field2: 2 };
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const STRUCT4: Struct4 = Struct4 { field: 1 };
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const STRUCT5: Struct5 = Struct5 { field: 1 };
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum1<#[unstable(feature = "unstable_default", issue = "none")] T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Some(#[stable(feature = "stable_test_feature", since = "1.0.0")] T),
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    None,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum2<T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Some(#[stable(feature = "stable_test_feature", since = "1.0.0")] T),
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    None,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum3<T = isize, #[unstable(feature = "unstable_default", issue = "none")] E = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Ok(#[stable(feature = "stable_test_feature", since = "1.0.0")] T),
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Err(#[stable(feature = "stable_test_feature", since = "1.0.0")] E),
+}
+
+#[deprecated(since = "1.1.0", note = "test")]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum4<T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Some(#[stable(feature = "stable_test_feature", since = "1.0.0")] T),
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    None,
+}
+
+#[deprecated(since = "1.1.0", note = "test")]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum5<#[unstable(feature = "unstable_default", issue = "none")] T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Some(#[stable(feature = "stable_test_feature", since = "1.0.0")] T),
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    None,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub enum Enum6<#[unstable(feature = "unstable_default6", issue = "none")] T = usize> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    Some(#[stable(feature = "stable_test_feature", since = "1.0.0")] T),
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    None,
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ENUM1: Enum1 = Enum1::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ENUM2: Enum2 = Enum2::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ENUM3: Enum3 = Enum3::Ok(1);
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ENUM3B: Enum3 = Enum3::Err(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ENUM4: Enum4 = Enum4::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ENUM5: Enum5 = Enum5::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub type Alias1<#[unstable(feature = "unstable_default", issue = "none")] T = usize> = Option<T>;
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub type Alias2<T = usize> = Option<T>;
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub type Alias3<T = isize, #[unstable(feature = "unstable_default", issue = "none")] E = usize> =
+    Result<T, E>;
+
+#[deprecated(since = "1.1.0", note = "test")]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub type Alias4<T = usize> = Option<T>;
+
+#[deprecated(since = "1.1.0", note = "test")]
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub type Alias5<#[unstable(feature = "unstable_default", issue = "none")] T = usize> = Option<T>;
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub type Alias6<#[unstable(feature = "unstable_default6", issue = "none")] T = usize> = Option<T>;
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ALIAS1: Alias1 = Alias1::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ALIAS2: Alias2 = Alias2::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ALIAS3: Alias3 = Alias3::Ok(1);
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ALIAS3B: Alias3 = Alias3::Err(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ALIAS4: Alias4 = Alias4::Some(1);
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub const ALIAS5: Alias5 = Alias5::Some(1);
+
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub trait Alloc {}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct System {}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+impl Alloc for System {}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Box1<T, #[unstable(feature = "box_alloc_param", issue = "none")] A: Alloc = System> {
+    ptr: *mut T,
+    alloc: A,
+}
+
+impl<T> Box1<T, System> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub fn new(mut t: T) -> Self {
+        unsafe { Self { ptr: &mut t, alloc: System {} } }
+    }
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Box2<T, A: Alloc = System> {
+    ptr: *mut T,
+    alloc: A,
+}
+
+impl<T> Box2<T, System> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub fn new(mut t: T) -> Self {
+        Self { ptr: &mut t, alloc: System {} }
+    }
+}
+
+#[stable(feature = "stable_test_feature", since = "1.0.0")]
+pub struct Box3<T> {
+    ptr: *mut T,
+}
+
+impl<T> Box3<T> {
+    #[stable(feature = "stable_test_feature", since = "1.0.0")]
+    pub fn new(mut t: T) -> Self {
+        Self { ptr: &mut t }
+    }
+}