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Rework the C strings tests to use ASSERT_SAME_TYPE. NFC there. Also change cwchar.pass.cpp to avoid constructing a couple things from zero - since apparently they can be enums in some weird C library. NFC there, either, since the values were never used.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@349522 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2018-12-18 19:07:30 +00:00
parent 6ad953652d
commit 3af9c5fa77
5 changed files with 147 additions and 134 deletions
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57
test/std/strings/c.strings/cstring.pass.cpp
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@@ -12,6 +12,8 @@
#include <cstring>
#include <type_traits>
#include "test_macros.h"
#ifndef NULL
#error NULL not defined
#endif
@@ -23,39 +25,40 @@ int main()
const void* vpc = 0;
char* cp = 0;
const char* cpc = 0;
static_assert((std::is_same<decltype(std::memcpy(vp, vpc, s)), void*>::value), "");
static_assert((std::is_same<decltype(std::memmove(vp, vpc, s)), void*>::value), "");
static_assert((std::is_same<decltype(std::strcpy(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(std::strncpy(cp, cpc, s)), char*>::value), "");
static_assert((std::is_same<decltype(std::strcat(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(std::strncat(cp, cpc, s)), char*>::value), "");
static_assert((std::is_same<decltype(std::memcmp(vpc, vpc, s)), int>::value), "");
static_assert((std::is_same<decltype(std::strcmp(cpc, cpc)), int>::value), "");
static_assert((std::is_same<decltype(std::strncmp(cpc, cpc, s)), int>::value), "");
static_assert((std::is_same<decltype(std::strcoll(cpc, cpc)), int>::value), "");
static_assert((std::is_same<decltype(std::strxfrm(cp, cpc, s)), std::size_t>::value), "");
static_assert((std::is_same<decltype(std::memchr(vp, 0, s)), void*>::value), "");
static_assert((std::is_same<decltype(std::strchr(cp, 0)), char*>::value), "");
static_assert((std::is_same<decltype(std::strcspn(cpc, cpc)), std::size_t>::value), "");
static_assert((std::is_same<decltype(std::strpbrk(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(std::strrchr(cp, 0)), char*>::value), "");
static_assert((std::is_same<decltype(std::strspn(cpc, cpc)), std::size_t>::value), "");
static_assert((std::is_same<decltype(std::strstr(cp, cpc)), char*>::value), "");
ASSERT_SAME_TYPE(void*, decltype(std::memcpy(vp, vpc, s)));
ASSERT_SAME_TYPE(void*, decltype(std::memmove(vp, vpc, s)));
ASSERT_SAME_TYPE(char*, decltype(std::strcpy(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(std::strncpy(cp, cpc, s)));
ASSERT_SAME_TYPE(char*, decltype(std::strcat(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(std::strncat(cp, cpc, s)));
ASSERT_SAME_TYPE(int, decltype(std::memcmp(vpc, vpc, s)));
ASSERT_SAME_TYPE(int, decltype(std::strcmp(cpc, cpc)));
ASSERT_SAME_TYPE(int, decltype(std::strncmp(cpc, cpc, s)));
ASSERT_SAME_TYPE(int, decltype(std::strcoll(cpc, cpc)));
ASSERT_SAME_TYPE(std::size_t, decltype(std::strxfrm(cp, cpc, s)));
ASSERT_SAME_TYPE(void*, decltype(std::memchr(vp, 0, s)));
ASSERT_SAME_TYPE(char*, decltype(std::strchr(cp, 0)));
ASSERT_SAME_TYPE(std::size_t, decltype(std::strcspn(cpc, cpc)));
ASSERT_SAME_TYPE(char*, decltype(std::strpbrk(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(std::strrchr(cp, 0)));
ASSERT_SAME_TYPE(std::size_t, decltype(std::strspn(cpc, cpc)));
ASSERT_SAME_TYPE(char*, decltype(std::strstr(cp, cpc)));
#ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
static_assert((std::is_same<decltype(std::strtok(cp, cpc)), char*>::value), "");
ASSERT_SAME_TYPE(char*, decltype(std::strtok(cp, cpc)));
#endif
static_assert((std::is_same<decltype(std::memset(vp, 0, s)), void*>::value), "");
static_assert((std::is_same<decltype(std::strerror(0)), char*>::value), "");
static_assert((std::is_same<decltype(std::strlen(cpc)), std::size_t>::value), "");
ASSERT_SAME_TYPE(void*, decltype(std::memset(vp, 0, s)));
ASSERT_SAME_TYPE(char*, decltype(std::strerror(0)));
ASSERT_SAME_TYPE(std::size_t, decltype(std::strlen(cpc)));
// These tests fail on systems whose C library doesn't provide a correct overload
// set for strchr, strpbrk, strrchr, strstr, and memchr, unless the compiler is
// a suitably recent version of Clang.
#if !defined(__APPLE__) || defined(_LIBCPP_PREFERRED_OVERLOAD)
static_assert((std::is_same<decltype(std::memchr(vpc, 0, s)), const void*>::value), "");
static_assert((std::is_same<decltype(std::strchr(cpc, 0)), const char*>::value), "");
static_assert((std::is_same<decltype(std::strpbrk(cpc, cpc)), const char*>::value), "");
static_assert((std::is_same<decltype(std::strrchr(cpc, 0)), const char*>::value), "");
static_assert((std::is_same<decltype(std::strstr(cpc, cpc)), const char*>::value), "");
ASSERT_SAME_TYPE(const void*, decltype(std::memchr(vpc, 0, s)));
ASSERT_SAME_TYPE(const char*, decltype(std::strchr(cpc, 0)));
ASSERT_SAME_TYPE(const char*, decltype(std::strpbrk(cpc, cpc)));
ASSERT_SAME_TYPE(const char*, decltype(std::strrchr(cpc, 0)));
ASSERT_SAME_TYPE(const char*, decltype(std::strstr(cpc, cpc)));
#endif
}