Reproduce ICE in 'gimplify_expr:
  gcc_assert ((*gimple_test_f) (*expr_p))'

diff --git a/gcc/testsuite/gcc.dg/reproduce.c b/gcc/testsuite/gcc.dg/reproduce.c
new file mode 100644
index 0000000..c0c8e0b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/reproduce.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+#include <stdarg.h>
+
+void
+f2 (int i, ...)
+{
+  va_list ap;
+  va_start (ap, i);
+  va_arg (ap, long);
+  va_end (ap);
+}
diff --git a/gcc/tree-stdarg.c b/gcc/tree-stdarg.c
index 1356374..829cbc1 100644
--- a/gcc/tree-stdarg.c
+++ b/gcc/tree-stdarg.c
@@ -1079,7 +1079,7 @@ expand_ifn_va_arg_1 (function *fun)
 	    gimplify_assign (lhs, expr, &pre);
 	  }
 	else
-	  gimplify_expr (&expr, &pre, &post, is_gimple_lvalue, fb_lvalue);
+	  gimplify_expr (&expr, &pre, &post, is_gimple_val, fb_either);
 
 	pop_gimplify_context (NULL);
 
-- 
1.9.1