1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/tree.h b/gcc/tree.h
index c7745be..60427b9 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -823,7 +823,7 @@ struct tree_exp
 #define BLOCK_SUPERCONTEXT(NODE) (BLOCK_CHECK (NODE)->block.supercontext)
 /* Note: when changing this, make sure to find the places
    that use chainon or nreverse.  */
-#define BLOCK_CHAIN(NODE) TREE_CHAIN (NODE)
+#define BLOCK_CHAIN(NODE) TREE_CHAIN (BLOCK_CHECK (NODE))
 #define BLOCK_ABSTRACT_ORIGIN(NODE) (BLOCK_CHECK (NODE)->block.abstract_origin)
 #define BLOCK_ABSTRACT(NODE) (BLOCK_CHECK (NODE)->block.abstract_flag)