external/bsd/libc++/dist/libcxx/test/strings/c.strings/cstring.pass.cpp

   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 // <cstring>
  11
  12 #include <cstring>
  13 #include <type_traits>
  14
  15 #ifndef NULL
  16 #error NULL not defined
  17 #endif
  18
  19 int main()
  20 {
  21     std::size_t s = 0;
  22     void* vp = 0;
  23     const void* vpc = 0;
  24     char* cp = 0;
  25     const char* cpc = 0;
  26     static_assert((std::is_same<decltype(std::memcpy(vp, vpc, s)), void*>::value), "");
  27     static_assert((std::is_same<decltype(std::memmove(vp, vpc, s)), void*>::value), "");
  28     static_assert((std::is_same<decltype(std::strcpy(cp, cpc)), char*>::value), "");
  29     static_assert((std::is_same<decltype(std::strncpy(cp, cpc, s)), char*>::value), "");
  30     static_assert((std::is_same<decltype(std::strcat(cp, cpc)), char*>::value), "");
  31     static_assert((std::is_same<decltype(std::strncat(cp, cpc, s)), char*>::value), "");
  32     static_assert((std::is_same<decltype(std::memcmp(vpc, vpc, s)), int>::value), "");
  33     static_assert((std::is_same<decltype(std::strcmp(cpc, cpc)), int>::value), "");
  34     static_assert((std::is_same<decltype(std::strncmp(cpc, cpc, s)), int>::value), "");
  35     static_assert((std::is_same<decltype(std::strcoll(cpc, cpc)), int>::value), "");
  36     static_assert((std::is_same<decltype(std::strxfrm(cp, cpc, s)), std::size_t>::value), "");
  37 //    static_assert((std::is_same<decltype(std::memchr(vpc, 0, s)), const void*>::value), "");
  38     static_assert((std::is_same<decltype(std::memchr(vp, 0, s)), void*>::value), "");
  39 //    static_assert((std::is_same<decltype(std::strchr(cpc, 0)), const char*>::value), "");
  40     static_assert((std::is_same<decltype(std::strchr(cp, 0)), char*>::value), "");
  41     static_assert((std::is_same<decltype(std::strcspn(cpc, cpc)), std::size_t>::value), "");
  42 //    static_assert((std::is_same<decltype(std::strpbrk(cpc, cpc)), const char*>::value), "");
  43     static_assert((std::is_same<decltype(std::strpbrk(cp, cpc)), char*>::value), "");
  44 //    static_assert((std::is_same<decltype(std::strrchr(cpc, 0)), const char*>::value), "");
  45     static_assert((std::is_same<decltype(std::strrchr(cp, 0)), char*>::value), "");
  46     static_assert((std::is_same<decltype(std::strspn(cpc, cpc)), std::size_t>::value), "");
  47 //    static_assert((std::is_same<decltype(std::strstr(cpc, cpc)), const char*>::value), "");
  48     static_assert((std::is_same<decltype(std::strstr(cp, cpc)), char*>::value), "");
  49     static_assert((std::is_same<decltype(std::strtok(cp, cpc)), char*>::value), "");
  50     static_assert((std::is_same<decltype(std::memset(vp, 0, s)), void*>::value), "");
  51     static_assert((std::is_same<decltype(std::strerror(0)), char*>::value), "");
  52     static_assert((std::is_same<decltype(std::strlen(cpc)), std::size_t>::value), "");
  53 }