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Minor clean up
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‎src/test/ui/self/elision/README.md‎

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Test cases intended to to document behavior and try to exhaustively
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explore the combinations.
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explore the combinations.
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## Confidence
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@@ -23,11 +23,11 @@ in the "confidence" field in the following table. Values:
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| `struct.rs` | `Struct` | `Struct` | ignore `self` parameter | 100% |
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| `alias.rs` | `Struct` | `Alias` | ignore `self` parameter | 100% |
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| `ref-self.rs` | `Struct` | `&Self` | take lifetime from `&Self` | 100% |
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| `ref-mut-self.rs` | `Struct` | `&mut Self` | take lifetime from `&Self` | 100% |
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| `ref-mut-self.rs` | `Struct` | `&mut Self` | take lifetime from `&mut Self` | 100% |
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| `ref-struct.rs` | `Struct` | `&Struct` | take lifetime from `&Self` | 50% |
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| `ref-mut-struct.rs` | `Struct` | `&Struct` | take lifetime from `&Self` | 50% |
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| `ref-mut-struct.rs` | `Struct` | `&mut Struct` | take lifetime from `&mut Self` | 50% |
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| `ref-alias.rs` | `Struct` | `&Alias` | ignore `Alias` | 0% |
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| `ref-mut-alias.rs` | `Struct` | `&Alias` | ignore `Alias` | 0% |
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| `ref-mut-alias.rs` | `Struct` | `&mut Alias` | ignore `Alias` | 0% |
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| `lt-self.rs` | `Struct<'a>` | `Self` | ignore `Self` (and hence `'a`) | 25% |
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| `lt-struct.rs` | `Struct<'a>` | `Self` | ignore `Self` (and hence `'a`) | 0% |
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| `lt-alias.rs` | `Alias<'a>` | `Self` | ignore `Self` (and hence `'a`) | 0% |
@@ -42,4 +42,3 @@ In each case, we test the following patterns:
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- `self: Box<Pin<XXX>>`
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In the non-reference cases, `Pin` causes errors so we substitute `Rc`.
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‎src/test/ui/self/elision/ref-mut-self.rs‎

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@@ -5,8 +5,6 @@ use std::pin::Pin;
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struct Struct { }
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type Alias = Struct;
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impl Struct {
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// Test using `&mut self` sugar:
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‎src/test/ui/self/elision/ref-mut-self.stderr‎

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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-self.rs:14:9
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--> $DIR/ref-mut-self.rs:12:9
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|
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LL | fn ref_self(&mut self, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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1111
error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-self.rs:20:9
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--> $DIR/ref-mut-self.rs:18:9
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|
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LL | fn ref_Self(self: &mut Self, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-self.rs:24:9
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--> $DIR/ref-mut-self.rs:22:9
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|
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LL | fn box_ref_Self(self: Box<&mut Self>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-self.rs:28:9
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--> $DIR/ref-mut-self.rs:26:9
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|
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LL | fn pin_ref_Self(self: Pin<&mut Self>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-self.rs:32:9
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--> $DIR/ref-mut-self.rs:30:9
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|
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LL | fn box_box_ref_Self(self: Box<Box<&mut Self>>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-self.rs:36:9
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--> $DIR/ref-mut-self.rs:34:9
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|
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LL | fn box_pin_ref_Self(self: Box<Pin<&mut Self>>, f: &u32) -> &u32 {
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| ---- ----

‎src/test/ui/self/elision/ref-mut-struct.rs‎

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struct Struct { }
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type Alias = Struct;
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impl Struct {
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// Test using `&mut Struct` explicitly:
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‎src/test/ui/self/elision/ref-mut-struct.stderr‎

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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-struct.rs:14:9
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--> $DIR/ref-mut-struct.rs:12:9
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|
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LL | fn ref_Struct(self: &mut Struct, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-struct.rs:18:9
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--> $DIR/ref-mut-struct.rs:16:9
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|
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LL | fn box_ref_Struct(self: Box<&mut Struct>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-struct.rs:22:9
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--> $DIR/ref-mut-struct.rs:20:9
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|
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LL | fn pin_ref_Struct(self: Pin<&mut Struct>, f: &u32) -> &u32 {
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| ---- ----
@@ -29,7 +29,7 @@ LL | f
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-struct.rs:26:9
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--> $DIR/ref-mut-struct.rs:24:9
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|
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LL | fn box_box_ref_Struct(self: Box<Box<&mut Struct>>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-mut-struct.rs:30:9
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--> $DIR/ref-mut-struct.rs:28:9
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|
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LL | fn box_pin_ref_Struct(self: Box<Pin<&mut Struct>>, f: &u32) -> &u32 {
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| ---- ----

‎src/test/ui/self/elision/ref-self.rs‎

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struct Struct { }
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type Alias = Struct;
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impl Struct {
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// Test using `&self` sugar:
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‎src/test/ui/self/elision/ref-struct.rs‎

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struct Struct { }
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type Alias = Struct;
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impl Struct {
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// Test using `&Struct` explicitly:
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‎src/test/ui/self/elision/ref-struct.stderr‎

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error[E0623]: lifetime mismatch
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--> $DIR/ref-struct.rs:14:9
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--> $DIR/ref-struct.rs:12:9
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LL | fn ref_Struct(self: &Struct, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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1111
error[E0623]: lifetime mismatch
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--> $DIR/ref-struct.rs:18:9
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--> $DIR/ref-struct.rs:16:9
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|
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LL | fn box_ref_Struct(self: Box<&Struct>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-struct.rs:22:9
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--> $DIR/ref-struct.rs:20:9
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|
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LL | fn pin_ref_Struct(self: Pin<&Struct>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-struct.rs:26:9
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--> $DIR/ref-struct.rs:24:9
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|
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LL | fn box_box_ref_Struct(self: Box<Box<&Struct>>, f: &u32) -> &u32 {
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| ---- ----
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| ^ ...but data from `f` is returned here
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error[E0623]: lifetime mismatch
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--> $DIR/ref-struct.rs:30:9
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--> $DIR/ref-struct.rs:28:9
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|
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LL | fn box_pin_Struct(self: Box<Pin<&Struct>>, f: &u32) -> &u32 {
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| ---- ----

‎src/test/ui/self/elision/struct.rs‎

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struct Struct { }
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impl Struct {
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// Test using `&mut Struct` explicitly:
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fn ref_Struct(self: Struct, f: &u32) -> &u32 {
14-
f //~ ERROR lifetime mismatch
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f
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}
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1715
fn box_Struct(self: Box<Struct>, f: &u32) -> &u32 {
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f //~ ERROR lifetime mismatch
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f
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}
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fn rc_Struct(self: Rc<Struct>, f: &u32) -> &u32 {
22-
f //~ ERROR lifetime mismatch
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f
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}
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fn box_box_Struct(self: Box<Box<Struct>>, f: &u32) -> &u32 {
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f //~ ERROR lifetime mismatch
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f
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}
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fn box_rc_Struct(self: Box<Rc<Struct>>, f: &u32) -> &u32 {
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f //~ ERROR lifetime mismatch
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f
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}
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}
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‎src/test/ui/self/self_lifetime.rs‎

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// check-pass
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// https://github.com/rust-lang/rust/pull/60944#issuecomment-495346120
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struct Foo<'a>(&'a ());
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impl<'a> Foo<'a> {
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fn foo<'b>(self: &'b Foo<'a>) -> &() { self.0 }

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