diff --git a/gcc/c/c-parser.c b/gcc/c/c-parser.c
index 19412d2637d3f..baa86e28c4089 100644
--- a/gcc/c/c-parser.c
+++ b/gcc/c/c-parser.c
@@ -2573,6 +2573,7 @@ c_parser_static_assert_declaration_no_semi (c_parser *parser)
      volatile
      address-space-qualifier
      _Atomic
+     _Dependent_ptr
 
    (restrict is new in C99.)
    (_Atomic is new in C11.)
diff --git a/gcc/c/c-tree.h b/gcc/c/c-tree.h
index 7c67a63aa7079..ea436aedef515 100644
--- a/gcc/c/c-tree.h
+++ b/gcc/c/c-tree.h
@@ -34,6 +34,9 @@ along with GCC; see the file COPYING3.  If not see
 /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile.  */
 #define C_TYPE_FIELDS_VOLATILE(TYPE) TREE_LANG_FLAG_2 (TYPE)
 
+/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is dependent pointer.  */
+#define C_TYPE_FIELDS_DEPENDENT_PTR(TYPE) TREE_LANG_FLAG_3 (TYPE)
+
 /* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
    nonzero if the definition of the type has already started.  */
 #define C_TYPE_BEING_DEFINED(TYPE) TYPE_LANG_FLAG_0 (TYPE)
diff --git a/gcc/tree-core.h b/gcc/tree-core.h
index 20d6b31d5f143..4307ee1a2c41b 100644
--- a/gcc/tree-core.h
+++ b/gcc/tree-core.h
@@ -948,6 +948,7 @@ struct GTY(()) tree_base {
   unsigned asm_written_flag: 1;
   unsigned nowarning_flag : 1;
   unsigned visited : 1;
+  unsigned dependent_ptr_flag : 1;
 
   unsigned used_flag : 1;
   unsigned nothrow_flag : 1;
@@ -976,8 +977,7 @@ struct GTY(()) tree_base {
       unsigned user_align : 1;
       unsigned nameless_flag : 1;
       unsigned atomic_flag : 1;
-      unsigned dependent_ptr_flag : 1;
-      unsigned spare0 : 2;
+      unsigned spare0 : 3;
 
       unsigned spare1 : 8;
 
diff --git a/gcc/tree.h b/gcc/tree.h
index 1e712dcc23d00..a214e08172131 100644
--- a/gcc/tree.h
+++ b/gcc/tree.h
@@ -787,6 +787,9 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int,
    If this bit is set in an expression, so is TREE_SIDE_EFFECTS.  */
 #define TREE_THIS_VOLATILE(NODE) ((NODE)->base.volatile_flag)
 
+/* Nonzero means this expression is having data dependence somewhere.  */
+#define TREE_THIS_DEPENDENT_PTR(NODE) ((NODE)->base.dependent_ptr_flag)
+
 /* Nonzero means this node will not trap.  In an INDIRECT_REF, means
    accessing the memory pointed to won't generate a trap.  However,
    this only applies to an object when used appropriately: it doesn't
@@ -2052,7 +2055,7 @@ extern machine_mode vector_type_mode (const_tree);
 #define TYPE_ATOMIC(NODE) (TYPE_CHECK (NODE)->base.u.bits.atomic_flag)
 
 /* Nonzero in a type considered dependent_ptr as a whole.  */
-#define TYPE_DEPENDENT_PTR(NODE) (TYPE_CHECK (NODE)->base.u.bits.dependent_ptr_flag)
+#define TYPE_DEPENDENT_PTR(NODE) (TYPE_CHECK (NODE)->base.dependent_ptr_flag)
 
 /* Means this type is const-qualified.  */
 #define TYPE_READONLY(NODE) (TYPE_CHECK (NODE)->base.readonly_flag)