Revise HIR lowering comment

diff --git a/compiler/rustc_mir/src/borrow_check/diagnostics/region_name.rs b/compiler/rustc_mir/src/borrow_check/diagnostics/region_name.rs
index 77297ded40d753d46ec4fb6e0695bf1119c24ab6..c8b45f87639a2730b248e6c34c31e5b5c9aad2d2 100644 (file)
--- a/compiler/rustc_mir/src/borrow_check/diagnostics/region_name.rs
+++ b/compiler/rustc_mir/src/borrow_check/diagnostics/region_name.rs
@@ -634,8 +634,8 @@ fn try_match_adt_and_generic_args<'hir>(
                     | GenericArgKind::Const(_),
                     _,
                 ) => {
-                    // HIR lowering is insufficient in erroneous programs, so
-                    // we need to use delay_span_bug here. See #82126.
+                    // HIR lowering sometimes doesn't catch this in erroneous
+                    // programs, so we need to use delay_span_bug here. See #82126.
                     self.infcx.tcx.sess.delay_span_bug(
                         hir_arg.span(),
                         &format!("unmatched subst and hir arg: found {:?} vs {:?}", kind, hir_arg),