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 // UNSUPPORTED: libcpp-no-exceptions 11 // MODULES_DEFINES: _LIBCPP_DEBUG=1 12 // MODULES_DEFINES: _LIBCPP_DEBUG_USE_EXCEPTIONS 13 14 // Can't test the system lib because this test enables debug mode 15 // UNSUPPORTED: with_system_cxx_lib 16 17 // test array<T, 0>::front() throws a debug exception. 18 19 #define _LIBCPP_DEBUG 1 20 #define _LIBCPP_DEBUG_USE_EXCEPTIONS 21 #include <array> 22 23 template <class Array> CheckDebugThrows(Array & Arr)24inline bool CheckDebugThrows(Array& Arr) { 25 try { 26 Arr.front(); 27 } catch (std::__libcpp_debug_exception const&) { 28 return true; 29 } 30 return false; 31 } 32 main()33int main() 34 { 35 { 36 typedef std::array<int, 0> C; 37 C c = {}; 38 C const& cc = c; 39 assert(CheckDebugThrows(c)); 40 assert(CheckDebugThrows(cc)); 41 } 42 { 43 typedef std::array<const int, 0> C; 44 C c = {{}}; 45 C const& cc = c; 46 assert(CheckDebugThrows(c)); 47 assert(CheckDebugThrows(cc)); 48 } 49 } 50