diff --git a/gcc/cpphash.h b/gcc/cpphash.h
index a7f1ad4266e..ddeacac5f7f 100644
--- a/gcc/cpphash.h
+++ b/gcc/cpphash.h
@@ -156,6 +156,8 @@ struct spec_nodes
 {
   cpp_hashnode *n_L;			/* L"str" */
   cpp_hashnode *n_defined;		/* defined operator */
+  cpp_hashnode *n_true;			/* C++ keyword true */
+  cpp_hashnode *n_false;		/* C++ keyword false */
   cpp_hashnode *n__Pragma;		/* _Pragma operator */
   cpp_hashnode *n__STRICT_ANSI__;	/* STDC_0_IN_SYSTEM_HEADERS */
   cpp_hashnode *n__CHAR_UNSIGNED__;	/* plain char is unsigned */