1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree.c b/gcc/tree.c
index 9b0b806..80675db 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -13708,10 +13708,14 @@ gimple_canonical_types_compatible_p (const_tree t1, const_tree t2,
 	     f1 || f2;
 	     f1 = TREE_CHAIN (f1), f2 = TREE_CHAIN (f2))
 	  {
-	    /* Skip non-fields.  */
-	    while (f1 && TREE_CODE (f1) != FIELD_DECL)
+	    /* Skip non-fields and zero-sized fields.  */
+	    while (f1 && (TREE_CODE (f1) != FIELD_DECL
+			  || (DECL_SIZE (f1)
+			      && integer_zerop (DECL_SIZE (f1)))))
 	      f1 = TREE_CHAIN (f1);
-	    while (f2 && TREE_CODE (f2) != FIELD_DECL)
+	    while (f2 && (TREE_CODE (f2) != FIELD_DECL
+			  || (DECL_SIZE (f2)
+			      && integer_zerop (DECL_SIZE (f2)))))
 	      f2 = TREE_CHAIN (f2);
 	    if (!f1 || !f2)
 	      break;