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authorDylan DPC <99973273+Dylan-DPC@users.noreply.github.com>2022-07-20 16:17:19 +0530
committerGitHub <noreply@github.com>2022-07-20 16:17:19 +0530
commiteecfdfb8a12367cb292a85b6a30981eb35a56379 (patch)
tree5450ed5b247533c39a063456dbc71de8e2156f78 /src/test/ui/parser
parent3c3c5da9adfdf308b5189b8034c07e0dc5492a54 (diff)
parent64dc377a103c0d377b3e60e08d29f69fcf7ba2c5 (diff)
downloadrust-eecfdfb8a12367cb292a85b6a30981eb35a56379.tar.gz
rust-eecfdfb8a12367cb292a85b6a30981eb35a56379.zip
Rollup merge of #99383 - ouz-a:issue_57961, r=oli-obk
Formalize defining_use_anchor

This tackles issue #57961

Introduces new enum called `DefiningAnchor` that replaces `Option<LocalDefId>` of `defining_use_anchor`. Now every use of it is explicit and exhaustively matched, catching errors like one in the linked issue. This is not a perfect fix but it's a step in the right direction.

r? `@oli-obk`
Diffstat (limited to 'src/test/ui/parser')
-rw-r--r--src/test/ui/parser/fn-header-semantic-fail.rs4
-rw-r--r--src/test/ui/parser/fn-header-semantic-fail.stderr46
2 files changed, 34 insertions, 16 deletions
diff --git a/src/test/ui/parser/fn-header-semantic-fail.rs b/src/test/ui/parser/fn-header-semantic-fail.rs
index c2954868f78..8ff14fb1f30 100644
--- a/src/test/ui/parser/fn-header-semantic-fail.rs
+++ b/src/test/ui/parser/fn-header-semantic-fail.rs
@@ -27,7 +27,7 @@ fn main() {
     struct Y;
     impl X for Y {
         async fn ft1() {} //~ ERROR functions in traits cannot be declared `async`
-        //~^ ERROR impl has stricter requirements than trait
+        //~^ ERROR has an incompatible type for trait
         unsafe fn ft2() {} // OK.
         const fn ft3() {} //~ ERROR functions in traits cannot be declared const
         extern "C" fn ft4() {}
@@ -36,7 +36,7 @@ fn main() {
         //~| ERROR functions in traits cannot be declared const
         //~| ERROR functions cannot be both `const` and `async`
         //~| ERROR cycle detected
-        //~| ERROR impl has stricter requirements than trait
+        //~| ERROR has an incompatible type for trait
     }
 
     impl Y {
diff --git a/src/test/ui/parser/fn-header-semantic-fail.stderr b/src/test/ui/parser/fn-header-semantic-fail.stderr
index 75d27c614e2..bc51ba8b8c5 100644
--- a/src/test/ui/parser/fn-header-semantic-fail.stderr
+++ b/src/test/ui/parser/fn-header-semantic-fail.stderr
@@ -216,23 +216,41 @@ LL | |     }
 LL | | }
    | |_^
 
-error[E0276]: impl has stricter requirements than trait
-  --> $DIR/fn-header-semantic-fail.rs:29:9
+error[E0053]: method `ft1` has an incompatible type for trait
+  --> $DIR/fn-header-semantic-fail.rs:29:24
    |
-LL |         async fn ft1();
-   |         --------------- definition of `ft1` from trait
-...
 LL |         async fn ft1() {}
-   |         ^^^^^^^^^^^^^^ impl has extra requirement `(): Future`
+   |                        ^
+   |                        |
+   |                        checked the `Output` of this `async fn`, found opaque type
+   |                        expected `()`, found opaque type
+   |
+   = note: while checking the return type of the `async fn`
+note: type in trait
+  --> $DIR/fn-header-semantic-fail.rs:17:23
+   |
+LL |         async fn ft1();
+   |                       ^
+   = note: expected fn pointer `fn()`
+              found fn pointer `fn() -> impl Future<Output = ()>`
 
-error[E0276]: impl has stricter requirements than trait
-  --> $DIR/fn-header-semantic-fail.rs:34:9
+error[E0053]: method `ft5` has an incompatible type for trait
+  --> $DIR/fn-header-semantic-fail.rs:34:48
    |
-LL |         const async unsafe extern "C" fn ft5();
-   |         --------------------------------------- definition of `ft5` from trait
-...
 LL |         const async unsafe extern "C" fn ft5() {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ impl has extra requirement `(): Future`
+   |                                                ^
+   |                                                |
+   |                                                checked the `Output` of this `async fn`, found opaque type
+   |                                                expected `()`, found opaque type
+   |
+   = note: while checking the return type of the `async fn`
+note: type in trait
+  --> $DIR/fn-header-semantic-fail.rs:21:47
+   |
+LL |         const async unsafe extern "C" fn ft5();
+   |                                               ^
+   = note: expected fn pointer `unsafe extern "C" fn()`
+              found fn pointer `unsafe extern "C" fn() -> impl Future<Output = ()>`
 
 error[E0391]: cycle detected when computing type of `main::<impl at $DIR/fn-header-semantic-fail.rs:28:5: 28:17>::ft5::{opaque#0}`
   --> $DIR/fn-header-semantic-fail.rs:34:48
@@ -308,5 +326,5 @@ LL | | }
 
 error: aborting due to 23 previous errors
 
-Some errors have detailed explanations: E0276, E0379, E0391, E0706.
-For more information about an error, try `rustc --explain E0276`.
+Some errors have detailed explanations: E0053, E0379, E0391, E0706.
+For more information about an error, try `rustc --explain E0053`.