re PR c++/57408 (lambda, Variable length arrays, thread, internal compiler…

re PR c++/57408 (lambda, Variable length arrays, thread, internal compiler error: in expand_expr_real_1, at expr.c:9327)

	PR c++/57408
	* semantics.c (add_capture): Set type to error_mark_node after
	error.

From-SVN: r200449

gcc/cp/ChangeLog

+2013-06-21  Jason Merrill  <jason@redhat.com>
+
+	PR c++/57408
+	* semantics.c (add_capture): Set type to error_mark_node after
+	error.
+
 2013-06-25  Ed Smith-Rowland  <3dw4rd@verizon.net>
 
 	PR c++/57640

gcc/cp/semantics.c

@@ -9521,6 +9521,7 @@ add_capture (tree lambda, tree id, tree initializer, bool by_reference_p,
 	  && variably_modified_type_p (TREE_TYPE (type), NULL_TREE))
 	inform (input_location, "because the array element type %qT has "
 		"variable size", TREE_TYPE (type));
+      type = error_mark_node;
     }
   else if (by_reference_p)
     {

gcc/testsuite/g++.dg/cpp1y/vla9.C

+// PR c++/57408
+// { dg-options "-std=c++1y -pedantic-errors" }
+
+template<typename Callable>
+  struct Impl
+  {
+    Callable func;
+    Impl(Callable f) : func(f) { }
+    virtual void run() { func(); }
+  };
+
+template<typename Callable>
+void call(Callable f)
+  {
+    Impl<Callable>(f).run();
+  }
+
+extern "C" int printf(const char*, ...);
+
+int main(){
+    int y = 2;
+    float fa[2][y];	    // { dg-error "array of array of runtime bound" }
+    fa[0][0]=0.8;
+    fa[0][1]=1.8;
+    auto fx=[&](){
+        for(int c=0; c<2; c++){
+            printf("use me", fa[0][c]);	// { dg-error "capture of variable-size type" }
+        }
+    };
+    call(fx);
+}