https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79558
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think the fix is just:
--- a/gcc/ubsan.c
+++ b/gcc/ubsan.c
@@ -409,7 +409,9 @@ ubsan_type_descriptor (tree type, enum ubsan_print_style
pstyle)
{
pp_left_bracket (&pretty_name);
tree dom = TYPE_DOMAIN (t);
- if (dom && TREE_CODE (TYPE_MAX_VALUE (dom)) == INTEGER_CST)
+ if (dom != NULL_TREE
+ && TYPE_MAX_VALUE (dom) != NULL_TREE
+ && TREE_CODE (TYPE_MAX_VALUE (dom)) == INTEGER_CST)
{
if (tree_fits_uhwi_p (TYPE_MAX_VALUE (dom))
&& tree_to_uhwi (TYPE_MAX_VALUE (dom)) + 1 != 0)
