PR testsuite/90772
	* g++.dg/cpp1y/feat-cxx14.C: Use std::size_t instead of size_t.
	* g++.dg/cpp1z/feat-cxx1z.C: Likewise.
	* g++.dg/cpp2a/feat-cxx2a.C: Likewise.
	* g++.dg/cpp1z/pr85569.C: Include <functional>.
	* g++.dg/tree-ssa/pr80293.C: Include <cstdint>.
	* g++.dg/tree-ssa/pr69336.C: Include <stdexcept>.

From-SVN: r272122