diff --git a/gcc/cp/init.c b/gcc/cp/init.c
index d632816..982dc24 100644
--- a/gcc/cp/init.c
+++ b/gcc/cp/init.c
@@ -1443,7 +1443,7 @@ expand_default_init (tree binfo, tree true_exp, tree exp, tree init, int flags,
   if (exp == true_exp && TREE_CODE (rval) == CALL_EXPR)
     {
       tree fn = get_callee_fndecl (rval);
-      if (DECL_DECLARED_CONSTEXPR_P (fn))
+      if (fn && DECL_DECLARED_CONSTEXPR_P (fn))
 	{
 	  tree e = maybe_constant_value (rval);
 	  if (TREE_CONSTANT (e))
diff --git a/gcc/testsuite/g++.dg/template/new9.C b/gcc/testsuite/g++.dg/template/new9.C
new file mode 100644
index 0000000..24e40ee
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/new9.C
@@ -0,0 +1,16 @@
+// PR c++/46277
+
+class ggRGBE {
+public:
+    ggRGBE();
+};
+template <class T> class ggIO
+{
+  void readbody(int);
+  ggRGBE *scanline;
+};
+template <class T> void
+ggIO<T>::readbody(int width)
+{
+  scanline = new ggRGBE[width];
+}