PR c++/84429 - ICE capturing VLA.

	* lambda.c (build_capture_proxy): Handle reference refs.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@257836 138bc75d-0d04-0410-961f-82ee72b054a4

gcc/cp/ChangeLog

@@ -1,3 +1,8 @@
+2018-02-19  Jason Merrill  <jason@redhat.com>
+
+	PR c++/84429 - ICE capturing VLA.
+	* lambda.c (build_capture_proxy): Handle reference refs.
+
 2018-02-19  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/84448

gcc/cp/lambda.c

@@ -451,11 +451,12 @@ build_capture_proxy (tree member, tree init)
 	{
 	  if (PACK_EXPANSION_P (init))
 	    init = PACK_EXPANSION_PATTERN (init);
-	  if (INDIRECT_REF_P (init))
-	    init = TREE_OPERAND (init, 0);
-	  STRIP_NOPS (init);
 	}
 
+      if (INDIRECT_REF_P (init))
+	init = TREE_OPERAND (init, 0);
+      STRIP_NOPS (init);
+
       gcc_assert (VAR_P (init) || TREE_CODE (init) == PARM_DECL);
       while (is_normal_capture_proxy (init))
 	init = DECL_CAPTURED_VARIABLE (init);

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-vla1.C

@@ -0,0 +1,9 @@
+// PR c++/84429
+// { dg-do compile { target c++11 } }
+// { dg-options "" }
+
+void foo(int i)
+{
+  char x[i];
+  [&]{ [&]{ return x; }; };
+}