[Bug middle-end/78716] [7 Regression] ICE in gimplify_va_arg_expr, at gimplify.c:12650 (i686-linux-gnu)

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78716

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think I see the error.  If I add this hunk back (that r240072 removed), it
doesn't ICE anymore:

--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -4124,6 +4124,8 @@ std_canonical_va_list_type (tree type)
 {
   tree wtype, htype;

+  if (POINTER_TYPE_P (type) && POINTER_TYPE_P (TREE_TYPE (type)))
+    type = TREE_TYPE (type);
   wtype = va_list_type_node;
   htype = type;


The testcase won't ICE if I change
__builtin_va_list *s
to
__builtin_va_list s