diff --git a/ChangeLog b/ChangeLog
index 9c9396aaa219..454483ffe73c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2015-06-02  Jason Merrill  <jason@redhat.com>
+
+	PR bootstrap/66319
+	* configure.ac: Use -std=gnu++98.
+
 2015-06-02  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
 	* MAINTAINERS (Write After Approval): Add myself.
diff --git a/configure b/configure
index 167b506002a0..bced9de413e9 100755
--- a/configure
+++ b/configure
@@ -5410,7 +5410,7 @@ esac
 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
 # C++98 compiler can still start the bootstrap.
 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
-  CXX="$CXX -std=c++98"
+  CXX="$CXX -std=gnu++98"
 fi
 
 # Used for setting $lt_cv_objdir
diff --git a/configure.ac b/configure.ac
index 250930562791..7c06e6ba9fad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1445,7 +1445,7 @@ esac
 # When bootstrapping with GCC, build stage 1 in C++98 mode to ensure that a
 # C++98 compiler can still start the bootstrap.
 if test "$enable_bootstrap:$GXX" = "yes:yes"; then
-  CXX="$CXX -std=c++98"
+  CXX="$CXX -std=gnu++98"
 fi
 
 # Used for setting $lt_cv_objdir