better ICE than sorry

RalfJung · RalfJung · commit 5753e592dc1f · 2023-09-16T13:56:16.000+02:00
diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs
@@ -411,6 +411,7 @@ impl<'tcx> ConstToPat<'tcx> {
                             let err = TypeNotStructural { span, non_sm_ty: *pointee_ty };
                             tcx.sess.emit_err(err);
                         }
+                        tcx.sess.delay_span_bug(span, "`saw_const_match_error` set but no error?");
                         // We errored, so the pattern we generate is irrelevant.
                         PatKind::Wild
                     }

Original file line number	Diff line number	Diff line change
`@@ -411,6 +411,7 @@ impl<'tcx> ConstToPat<'tcx> {`
`411`	`411`	`let err = TypeNotStructural { span, non_sm_ty: *pointee_ty };`
`412`	`412`	`tcx.sess.emit_err(err);`
`413`	`413`	`}`
	`414`	+ tcx.sess.delay_span_bug(span, "`saw_const_match_error` set but no error?");
`414`	`415`	`// We errored, so the pattern we generate is irrelevant.`
`415`	`416`	`PatKind::Wild`
`416`	`417`	`}`