be even more precise about "cast" vs "coercion"

Lukas Markeffsky · Lukas Markeffsky · commit 037d47594edf · 2024-09-24T23:12:02.000+02:00
diff --git a/tests/fail/dyn-upcast-trait-mismatch.stderr b/tests/fail/dyn-upcast-trait-mismatch.stderr
@@ -2,7 +2,7 @@ error: Undefined Behavior: using vtable for `Baz` but `Bar` was expected
   --> tests/fail/dyn-upcast-trait-mismatch.rs:LL:CC
    |
 LL |         let _err = baz_fake as *const dyn Foo;
-   |                    ^^^^^^^^ using vtable for `Baz` but `Bar` was expected
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ using vtable for `Baz` but `Bar` was expected
    |
    = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior
    = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information

Original file line number	Diff line number	Diff line change
@@ -2,7 +2,7 @@ error: Undefined Behavior: using vtable for `Baz` but `Bar` was expected
`2`	`2`	`--> tests/fail/dyn-upcast-trait-mismatch.rs:LL:CC`
`3`	`3`	`\|`
`4`	`4`	`LL \| let _err = baz_fake as *const dyn Foo;`
`5`		- \| ^^^^^^^^ using vtable for `Baz` but `Bar` was expected
	`5`	+ \| ^^^^^^^^^^^^^^^^^^^^^^^^^^ using vtable for `Baz` but `Bar` was expected
`6`	`6`	`\|`
`7`	`7`	`= help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior`
`8`	`8`	`= help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information`