PR c++/79461 - ICE with lambda in constexpr constructor

	* constexpr.c (build_data_member_initialization): Ignore
	initialization of a local variable.

From-SVN: r245410

gcc/cp/ChangeLog

+2017-02-13  Jason Merrill  <jason@redhat.com>
+
+	PR c++/79461 - ICE with lambda in constexpr constructor
+	* constexpr.c (build_data_member_initialization): Ignore
+	initialization of a local variable.
+
 2017-02-13  Jakub Jelinek  <jakub@redhat.com>
 
 	* init.c (warn_placement_new_too_small): Add missing space in

gcc/cp/constexpr.c

@@ -379,6 +379,9 @@ build_data_member_initialization (tree t, vec<constructor_elt, va_gc> **vec)
   if (TREE_CODE (member) == COMPONENT_REF)
     {
       tree aggr = TREE_OPERAND (member, 0);
+      if (TREE_CODE (aggr) == VAR_DECL)
+	/* Initializing a local variable, don't add anything.  */
+	return true;
       if (TREE_CODE (aggr) != COMPONENT_REF)
 	/* Normal member initialization.  */
 	member = TREE_OPERAND (member, 1);

gcc/testsuite/g++.dg/cpp1z/constexpr-lambda15.C

+// PR c++/79461
+// { dg-options -std=c++1z }
+
+struct S {
+  constexpr S(int i) {
+    auto f = [i]{};
+  }
+};
+int main() {}
+