re PR c++/57509 (Segmentation fault when using __builtin_shuffle in templated class.)

2013-06-28  Marc Glisse  <marc.glisse@inria.fr>

	PR c++/57509
	* g++.dg/ext/pr57509.C: Pass vectors by reference to avoid warnings.

From-SVN: r200511

gcc/testsuite/ChangeLog

+2013-06-28  Marc Glisse  <marc.glisse@inria.fr>
+
+	PR c++/57509
+	* g++.dg/ext/pr57509.C: Pass vectors by reference to avoid warnings.
+
 2013-06-28  Kirill Yukhin  <kirill.yukhin@intel.com>
 
         * gcc.target/i386/bmi-1.c: Extend with new instrinsic.

gcc/testsuite/g++.dg/ext/pr57509.C

@@ -4,8 +4,8 @@
 template <bool> struct enable_if {};
 template <> struct enable_if<true> {typedef void type;};
 template <class T> void f (T& v) { v = __builtin_shuffle (v, v); }
-template <class T> void g (T) {}
-template <class T> auto g (T x) -> typename enable_if<sizeof(__builtin_shuffle(x,x))!=2>::type {}
+template <class T> void g (T const&) {}
+template <class T> auto g (T const& x) -> typename enable_if<sizeof(__builtin_shuffle(x,x))!=2>::type {}
 typedef int v4i __attribute__((vector_size(4*sizeof(int))));
 typedef float v4f __attribute__((vector_size(4*sizeof(float))));
 int main(){