1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <locale> 11 12 // wbuffer_convert<Codecvt, Elem, Tr> 13 14 // wbuffer_convert(streambuf *bytebuf = 0, Codecvt *pcvt = new Codecvt, 15 // state_type state = state_type()); 16 17 #include <locale> 18 #include <codecvt> 19 #include <sstream> 20 #include <cassert> 21 #include <new> 22 23 int new_called = 0; 24 25 void* operator new(std::size_t s) throw(std::bad_alloc) 26 { 27 ++new_called; 28 return std::malloc(s); 29 } 30 31 void operator delete(void* p) throw() 32 { 33 --new_called; 34 std::free(p); 35 } 36 37 int main() 38 { 39 typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > B; 40 #if _LIBCPP_STD_VER > 11 41 static_assert(!std::is_convertible<std::streambuf*, B>::value, ""); 42 static_assert( std::is_constructible<B, std::streambuf*>::value, ""); 43 #endif 44 { 45 B b; 46 assert(b.rdbuf() == nullptr); 47 assert(new_called != 0); 48 } 49 assert(new_called == 0); 50 { 51 std::stringstream s; 52 B b(s.rdbuf()); 53 assert(b.rdbuf() == s.rdbuf()); 54 assert(new_called != 0); 55 } 56 assert(new_called == 0); 57 { 58 std::stringstream s; 59 B b(s.rdbuf(), new std::codecvt_utf8<wchar_t>); 60 assert(b.rdbuf() == s.rdbuf()); 61 assert(new_called != 0); 62 } 63 assert(new_called == 0); 64 { 65 std::stringstream s; 66 B b(s.rdbuf(), new std::codecvt_utf8<wchar_t>, std::mbstate_t()); 67 assert(b.rdbuf() == s.rdbuf()); 68 assert(new_called != 0); 69 } 70 assert(new_called == 0); 71 } 72
