make custom mir ICE a bit nicer

rust-lang · Jun 26, 2023 · c6e6ceb · c6e6ceb
1 parent 0d03812
commit c6e6ceb
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/compiler/rustc_mir_build/src/build/custom/mod.rs b/compiler/rustc_mir_build/src/build/custom/mod.rs
@@ -118,7 +118,11 @@ fn parse_attribute(attr: &Attribute) -> MirPhase {
                 phase = Some(value);
             }
             other => {
-                panic!("Unexpected key {}", other);
+                span_bug!(
+                    nested.span(),
+                    "Unexpected key while parsing custom_mir attribute: '{}'",
+                    other
+                );
             }
         }
     }