Add g++.dg/pr82836.C requirements

	* g++.dg/pr82836.C: Require int128, __float128 support.
	Add __float128 options.
	(size_t): Define using __SIZE_TYPE__.

From-SVN: r254953

gcc/testsuite/ChangeLog

+2017-11-20  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* g++.dg/pr82836.C: Require int128, __float128 support.
+	Add __float128 options.
+	(size_t): Define using __SIZE_TYPE__.
+
 2017-11-20   Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/82781

gcc/testsuite/g++.dg/pr82836.C

 // PR c++/82836
 // { dg-options "-std=c++17" }
+// { dg-require-effective-target int128 }
+// { dg-require-effective-target __float128 }
 // { dg-additional-options "-Wno-pedantic -Wno-return-type" }
+// { dg-add-options __float128 }
 // We were resetting DECL_ASSEMBLER_NAME when processing pragma weak,
 // breaking C++'s mangling alias hash table.  That hash table needs to
 // be tickled in just the right way to hit the problem.
 
 namespace std {
-typedef long unsigned size_t;
+typedef __SIZE_TYPE__ size_t;
 inline namespace __cxx11 {}
   double abs() {return 0;}
   __int128 abs(__int128 ) {return 0;}