[Bug c/106560] ICE after conflicting types of redeclaration

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106560

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2022-08-08
           Assignee|unassigned at gcc dot gnu.org      |pinskia at gcc dot gnu.org
             Status|UNCONFIRMED                 |ASSIGNED

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is the simple fix, I will submit it this weekend.
[apinski@xeond2 gcc]$ git diff
diff --git a/gcc/gimplify.cc b/gcc/gimplify.cc
index f0fbdb48012..d9ada8e0f9e 100644
--- a/gcc/gimplify.cc
+++ b/gcc/gimplify.cc
@@ -6012,6 +6012,11 @@ gimplify_modify_expr (tree *expr_p, gimple_seq *pre_p,
gimple_seq *post_p,
   gcc_assert (TREE_CODE (*expr_p) == MODIFY_EXPR
              || TREE_CODE (*expr_p) == INIT_EXPR);

+  if (TREE_TYPE (*from_p) == error_mark_node)
+    return GS_ERROR;
+  if (TREE_TYPE (*to_p) == error_mark_node)
+    return GS_ERROR;
+
   /* Trying to simplify a clobber using normal logic doesn't work,
      so handle it here.  */
   if (TREE_CLOBBER_P (*from_p))