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 #include <ctime>
11 #include <type_traits>
12
13 #include "test_macros.h"
14
15 #ifndef NULL
16 #error NULL not defined
17 #endif
18
19 #ifndef CLOCKS_PER_SEC
20 #error CLOCKS_PER_SEC not defined
21 #endif
22
23 #if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
24 #ifndef TIME_UTC
25 #error TIME_UTC not defined
26 #endif
27 #endif
28
29 #if defined(__GNUC__)
30 #pragma GCC diagnostic ignored "-Wformat-zero-length"
31 #endif
32
main()33 int main()
34 {
35 std::clock_t c = 0;
36 std::size_t s = 0;
37 std::time_t t = 0;
38 std::tm tm = {};
39 char str[3];
40 ((void)c); // Prevent unused warning
41 ((void)s); // Prevent unused warning
42 ((void)t); // Prevent unused warning
43 ((void)tm); // Prevent unused warning
44 ((void)str); // Prevent unused warning
45 #if TEST_STD_VER > 14 && defined(TEST_HAS_C11_FEATURES)
46 std::timespec tmspec = {};
47 ((void)tmspec); // Prevent unused warning
48 #endif
49
50 static_assert((std::is_same<decltype(std::clock()), std::clock_t>::value), "");
51 static_assert((std::is_same<decltype(std::difftime(t,t)), double>::value), "");
52 static_assert((std::is_same<decltype(std::mktime(&tm)), std::time_t>::value), "");
53 static_assert((std::is_same<decltype(std::time(&t)), std::time_t>::value), "");
54 #if TEST_STD_VER > 14 && defined(TEST_HAS_TIMESPEC_GET)
55 static_assert((std::is_same<decltype(std::timespec_get(nullptr, 0)), int>::value), "");
56 #endif
57 #ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
58 static_assert((std::is_same<decltype(std::asctime(&tm)), char*>::value), "");
59 static_assert((std::is_same<decltype(std::ctime(&t)), char*>::value), "");
60 static_assert((std::is_same<decltype(std::gmtime(&t)), std::tm*>::value), "");
61 static_assert((std::is_same<decltype(std::localtime(&t)), std::tm*>::value), "");
62 #endif
63 static_assert((std::is_same<decltype(std::strftime(str,s,"",&tm)), std::size_t>::value), "");
64 }
65