[committed] testsuite: Fix concepts-using2.C failure on 32-bit targets [PR93907]

[Jakub Jelinek]

Hi!

The test FAILs on 32-bit targets that don't have __int128 type.

Fixed thusly, regtested on x86_64-linux and i686-linux, committed to trunk
as obvious.

2020-03-12  Jakub Jelinek  <jakub@redhat.com>

	PR c++/93907
	* g++.dg/cpp2a/concepts-using2.C (cc): Use long long instead of
	__int128 if __SIZEOF_INT128__ isn't defined.

--- gcc/testsuite/g++.dg/cpp2a/concepts-using2.C.jj	2020-03-11 23:31:45.818595378 +0100
+++ gcc/testsuite/g++.dg/cpp2a/concepts-using2.C	2020-03-12 01:25:44.011097711 +0100
@@ -15,7 +15,11 @@ template <typename b> using an = typenam
 template <typename> constexpr bool ao = c<true>::d;
 template <typename> constexpr bool i = c<1>::d;
 template <typename> concept bb = i<b>;
+#ifdef __SIZEOF_INT128__
 using cc = __int128;
+#else
+using cc = long long;
+#endif
 template <typename> concept cd = bb<cc>;
 template <typename bt> concept ce = requires { requires cd<bt>; };
 template <typename bt> concept h = ce<bt>;

	Jakub