[Bug c++/84537] [8 Regression] ICE in get_string, at spellcheck-tree.h

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84537

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think just 

--- a/gcc/cp/name-lookup.c
+++ b/gcc/cp/name-lookup.c
@@ -5541,6 +5541,10 @@ bool
 suggest_alternative_in_explicit_scope (location_t location, tree name,
                       tree scope)
 {
+  /* Something went very wrong; don't suggest anything.  */
+  if (name == error_mark_node)
+    return false;
+
   /* Resolve any namespace aliases.  */
   scope = ORIGINAL_NAMESPACE (scope);


should do.