[Bug c++/77549] [7 Regression] ICE on invalid C++ code that references undeclared variable

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77549

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 39609
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39609&action=edit
gcc7-pr77549.patch

Untested fix.  In the names chain, there can be not just decls and
error_mark_nodes, but also TREE_LIST (either for decls appearing from using, or
for OVERLOADs), and for such wrapped OVERLOADs we need to look through them too
to be able to look at DECL_NAME.