diff options
Diffstat (limited to 'gcc/tree.c')
| -rw-r--r-- | gcc/tree.c | 19 |
1 files changed, 18 insertions, 1 deletions
@@ -12855,6 +12855,17 @@ verify_type_variant (const_tree t, tree tv) debug_tree (TREE_TYPE (t)); return false; } + if (type_with_alias_set_p (t) + && !gimple_canonical_types_compatible_p (t, tv, false)) + { + error ("type is not compatible with its vairant"); + debug_tree (tv); + error ("type variant's TREE_TYPE"); + debug_tree (TREE_TYPE (tv)); + error ("type's TREE_TYPE"); + debug_tree (TREE_TYPE (t)); + return false; + } return true; #undef verify_variant_match } @@ -12879,7 +12890,13 @@ bool gimple_canonical_types_compatible_p (const_tree t1, const_tree t2, bool trust_type_canonical) { - /* Before starting to set up the SCC machinery handle simple cases. */ + /* Type variants should be same as the main variant. When not doing sanity + checking to verify this fact, go to main variants and save some work. */ + if (trust_type_canonical) + { + t1 = TYPE_MAIN_VARIANT (t1); + t2 = TYPE_MAIN_VARIANT (t2); + } /* Check first for the obvious case of pointer identity. */ if (t1 == t2) |