Add a few more cases to the unsupported_attribute.rs test

Signed-off-by: Jonathan Brouwer <jonathantbrouwer@gmail.com>

Author: JonathanBrouwer

tests/crashes/138510.rs

@@ -33,4 +33,8 @@ where
     //~| ERROR expected non-macro attribute, found attribute macro `derive`
     #[rustfmt::skip] T: Trait, //~ ERROR most attributes are not supported in `where` clauses
     #[rustfmt::skip] 'a: 'static, //~ ERROR most attributes are not supported in `where` clauses
+    #[must_use] T: Trait, //~ ERROR most attributes are not supported in `where` clauses
+    #[must_use] 'a: 'static, //~ ERROR most attributes are not supported in `where` clauses
+    #[cold] T: Trait, //~ ERROR most attributes are not supported in `where` clauses
+    #[cold] 'a: 'static, //~ ERROR most attributes are not supported in `where` clauses
 {}

tests/ui/where-clauses/unsupported_attribute.rs

@@ -154,5 +154,37 @@ LL |     #[rustfmt::skip] 'a: 'static,
    |
    = help: only `#[cfg]` and `#[cfg_attr]` are supported
 
-error: aborting due to 20 previous errors
+error: most attributes are not supported in `where` clauses
+  --> $DIR/unsupported_attribute.rs:36:5
+   |
+LL |     #[must_use] T: Trait,
+   |     ^^^^^^^^^^^
+   |
+   = help: only `#[cfg]` and `#[cfg_attr]` are supported
+
+error: most attributes are not supported in `where` clauses
+  --> $DIR/unsupported_attribute.rs:37:5
+   |
+LL |     #[must_use] 'a: 'static,
+   |     ^^^^^^^^^^^
+   |
+   = help: only `#[cfg]` and `#[cfg_attr]` are supported
+
+error: most attributes are not supported in `where` clauses
+  --> $DIR/unsupported_attribute.rs:38:5
+   |
+LL |     #[cold] T: Trait,
+   |     ^^^^^^^
+   |
+   = help: only `#[cfg]` and `#[cfg_attr]` are supported
+
+error: most attributes are not supported in `where` clauses
+  --> $DIR/unsupported_attribute.rs:39:5
+   |
+LL |     #[cold] 'a: 'static,
+   |     ^^^^^^^
+   |
+   = help: only `#[cfg]` and `#[cfg_attr]` are supported
+
+error: aborting due to 24 previous errors