@@ -1251,8 +1251,13 @@ first_map_in_common_1 (struct line_maps *set,
location_t *loc1)
{
location_t l0 = *loc0, l1 = *loc1;
- const struct line_map *map0 = linemap_lookup (set, l0),
- *map1 = linemap_lookup (set, l1);
+ const struct line_map *map0 = linemap_lookup (set, l0);
+ if (IS_ADHOC_LOC (l0))
+ l0 = get_location_from_adhoc_loc (set, l0);
+
+ const struct line_map *map1 = linemap_lookup (set, l1);
+ if (IS_ADHOC_LOC (l1))
+ l1 = get_location_from_adhoc_loc (set, l1);
while (linemap_macro_expansion_map_p (map0)
&& linemap_macro_expansion_map_p (map1)