diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1ffe147b0cd8..c35f52375a00 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2015-04-28  Tom de Vries  <tom@codesourcery.com>
+
+	PR tree-optimization/65818
+	* tree-stdarg.c (expand_ifn_va_arg_1): Ensure that side-effects are
+	evaluated.
+
 2015-04-27  Trevor Saunders  <tbsaunde+gcc@tbsaunde.org>
 
 	* calls.c (save_fixed_argument_area): Don't check
diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c
index 16a9e2cf66f4..1356374ba140 100644
--- a/gcc/tree-stdarg.c
+++ b/gcc/tree-stdarg.c
@@ -1078,6 +1078,8 @@ expand_ifn_va_arg_1 (function *fun)
 	       types.  */
 	    gimplify_assign (lhs, expr, &pre);
 	  }
+	else
+	  gimplify_expr (&expr, &pre, &post, is_gimple_lvalue, fb_lvalue);
 
 	pop_gimplify_context (NULL);