Auto merge of #86460 - JohnTitor:use-static-in-pattern-err, r=oli-obk

Refactor `PatternError` structure

Now we emit the `StaticInPattern` error precisely.
Fixes #68395
r? `@oli-obk`

src/test/ui/issues/issue-27895.rs

@@ -1,10 +0,0 @@
-fn main() {
-    let i = 5;
-    let index = 6;
-
-    match i {
-        0..=index => println!("winner"),
-        //~^ ERROR runtime values cannot be referenced in patterns
-        _ => println!("hello"),
-    }
-}

src/test/ui/issues/issue-27895.stderr

@@ -1,9 +0,0 @@
-error[E0080]: runtime values cannot be referenced in patterns
-  --> $DIR/issue-27895.rs:6:13
-   |
-LL |         0..=index => println!("winner"),
-   |             ^^^^^
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0080`.

src/test/ui/non-constant-in-const-path.rs

@@ -1,7 +0,0 @@
-fn main() {
-    let x = 0;
-    match 1 {
-        0 ..= x => {}
-        //~^ ERROR runtime values cannot be referenced in patterns
-    };
-}

src/test/ui/non-constant-in-const-path.stderr

@@ -1,9 +0,0 @@
-error[E0080]: runtime values cannot be referenced in patterns
-  --> $DIR/non-constant-in-const-path.rs:4:15
-   |
-LL |         0 ..= x => {}
-   |               ^
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0080`.

src/test/ui/pattern/issue-68394-let-pat-runtime-value.rs

@@ -1,5 +0,0 @@
-fn main() {
-    let x = 255u8;
-    let 0u8..=x = 0;
-    //~^ ERROR runtime values cannot be referenced in patterns
-}

src/test/ui/pattern/issue-68394-let-pat-runtime-value.stderr

@@ -1,9 +0,0 @@
-error[E0080]: runtime values cannot be referenced in patterns
-  --> $DIR/issue-68394-let-pat-runtime-value.rs:3:15
-   |
-LL |     let 0u8..=x = 0;
-   |               ^
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0080`.

src/test/ui/pattern/non-constant-in-const-path.rs

@@ -0,0 +1,18 @@
+// Checks if we emit `PatternError`s correctly.
+// This is also a regression test for #27895 and #68394.
+
+static FOO: u8 = 10;
+
+fn main() {
+    let x = 0;
+    let 0u8..=x = 0;
+    //~^ ERROR: runtime values cannot be referenced in patterns
+    let 0u8..=FOO = 0;
+    //~^ ERROR: statics cannot be referenced in patterns
+    match 1 {
+        0 ..= x => {}
+        //~^ ERROR: runtime values cannot be referenced in patterns
+        0 ..= FOO => {}
+        //~^ ERROR: statics cannot be referenced in patterns
+    };
+}

src/test/ui/pattern/non-constant-in-const-path.stderr

@@ -0,0 +1,28 @@
+error[E0080]: runtime values cannot be referenced in patterns
+  --> $DIR/non-constant-in-const-path.rs:8:15
+   |
+LL |     let 0u8..=x = 0;
+   |               ^
+
+error[E0158]: statics cannot be referenced in patterns
+  --> $DIR/non-constant-in-const-path.rs:10:15
+   |
+LL |     let 0u8..=FOO = 0;
+   |               ^^^
+
+error[E0080]: runtime values cannot be referenced in patterns
+  --> $DIR/non-constant-in-const-path.rs:13:15
+   |
+LL |         0 ..= x => {}
+   |               ^
+
+error[E0158]: statics cannot be referenced in patterns
+  --> $DIR/non-constant-in-const-path.rs:15:15
+   |
+LL |         0 ..= FOO => {}
+   |               ^^^
+
+error: aborting due to 4 previous errors
+
+Some errors have detailed explanations: E0080, E0158.
+For more information about an error, try `rustc --explain E0080`.