Panic when checking an unknown stability attribute

WaffleLapkin · WaffleLapkin · commit e11b4b8e0249 · 2022-07-31T16:02:45.000+04:00
diff --git a/compiler/rustc_attr/src/builtin.rs b/compiler/rustc_attr/src/builtin.rs
@@ -428,9 +428,11 @@ where
                                     ConstStability { level, feature, promotable: false },
                                     attr.span,
                                 ));
-                            } else {
+                            } else if sym::rustc_default_body_unstable == meta_name {
                                 body_stab =
                                     Some((DefaultBodyStability { level, feature }, attr.span));
+                            } else {
+                                unreachable!("Unknown stability attribute {meta_name}");
                             }
                         }
                         (None, _, _) => {

Original file line number	Diff line number	Diff line change
`@@ -428,9 +428,11 @@ where`
`428`	`428`	`ConstStability { level, feature, promotable: false },`
`429`	`429`	`attr.span,`
`430`	`430`	`));`
`431`		`- } else {`
	`431`	`+ } else if sym::rustc_default_body_unstable == meta_name {`
`432`	`432`	`body_stab =`
`433`	`433`	`Some((DefaultBodyStability { level, feature }, attr.span));`
	`434`	`+ } else {`
	`435`	`+ unreachable!("Unknown stability attribute {meta_name}");`
`434`	`436`	`}`
`435`	`437`	`}`
`436`	`438`	`(None, _, _) => {`