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[libc++] NFC: Use ASSERT_SAME_TYPE consistently in string.h and wchar.h tests

This commit is contained in:
Louis Dionne 2021-04-15 13:02:23 -04:00
parent 44e24d8f99
commit 9178fb73e1
3 changed files with 117 additions and 109 deletions
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54
libcxx/test/std/depr/depr.c.headers/string_h.pass.cpp
View File

@ -24,35 +24,35 @@ int main(int, char**)
const void* vpc = 0;
char* cp = 0;
const char* cpc = 0;
static_assert((std::is_same<decltype(memcpy(vp, vpc, s)), void*>::value), "");
static_assert((std::is_same<decltype(memmove(vp, vpc, s)), void*>::value), "");
static_assert((std::is_same<decltype(strcpy(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(strncpy(cp, cpc, s)), char*>::value), "");
static_assert((std::is_same<decltype(strcat(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(strncat(cp, cpc, s)), char*>::value), "");
static_assert((std::is_same<decltype(memcmp(vpc, vpc, s)), int>::value), "");
static_assert((std::is_same<decltype(strcmp(cpc, cpc)), int>::value), "");
static_assert((std::is_same<decltype(strncmp(cpc, cpc, s)), int>::value), "");
static_assert((std::is_same<decltype(strcoll(cpc, cpc)), int>::value), "");
static_assert((std::is_same<decltype(strxfrm(cp, cpc, s)), size_t>::value), "");
static_assert((std::is_same<decltype(memchr(vp, 0, s)), void*>::value), "");
static_assert((std::is_same<decltype(memchr(vpc, 0, s)), const void*>::value), "");
static_assert((std::is_same<decltype(strchr(cp, 0)), char*>::value), "");
static_assert((std::is_same<decltype(strchr(cpc, 0)), const char*>::value), "");
static_assert((std::is_same<decltype(strcspn(cpc, cpc)), size_t>::value), "");
static_assert((std::is_same<decltype(strpbrk(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(strpbrk(cpc, cpc)), const char*>::value), "");
static_assert((std::is_same<decltype(strrchr(cp, 0)), char*>::value), "");
static_assert((std::is_same<decltype(strrchr(cpc, 0)), const char*>::value), "");
static_assert((std::is_same<decltype(strspn(cpc, cpc)), size_t>::value), "");
static_assert((std::is_same<decltype(strstr(cp, cpc)), char*>::value), "");
static_assert((std::is_same<decltype(strstr(cpc, cpc)), const char*>::value), "");
ASSERT_SAME_TYPE(void*, decltype(memcpy(vp, vpc, s)));
ASSERT_SAME_TYPE(void*, decltype(memmove(vp, vpc, s)));
ASSERT_SAME_TYPE(char*, decltype(strcpy(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strncpy(cp, cpc, s)));
ASSERT_SAME_TYPE(char*, decltype(strcat(cp, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strncat(cp, cpc, s)));
ASSERT_SAME_TYPE(int, decltype(memcmp(vpc, vpc, s)));
ASSERT_SAME_TYPE(int, decltype(strcmp(cpc, cpc)));
ASSERT_SAME_TYPE(int, decltype(strncmp(cpc, cpc, s)));
ASSERT_SAME_TYPE(int, decltype(strcoll(cpc, cpc)));
ASSERT_SAME_TYPE(size_t, decltype(strxfrm(cp, cpc, s)));
ASSERT_SAME_TYPE(void*, decltype(memchr(vp, 0, s)));
ASSERT_SAME_TYPE(const void*, decltype(memchr(vpc, 0, s)));
ASSERT_SAME_TYPE(char*, decltype(strchr(cp, 0)));
ASSERT_SAME_TYPE(const char*, decltype(strchr(cpc, 0)));
ASSERT_SAME_TYPE(size_t, decltype(strcspn(cpc, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strpbrk(cp, cpc)));
ASSERT_SAME_TYPE(const char*, decltype(strpbrk(cpc, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strrchr(cp, 0)));
ASSERT_SAME_TYPE(const char*, decltype(strrchr(cpc, 0)));
ASSERT_SAME_TYPE(size_t, decltype(strspn(cpc, cpc)));
ASSERT_SAME_TYPE(char*, decltype(strstr(cp, cpc)));
ASSERT_SAME_TYPE(const char*, decltype(strstr(cpc, cpc)));
#ifndef _LIBCPP_HAS_NO_THREAD_UNSAFE_C_FUNCTIONS
static_assert((std::is_same<decltype(strtok(cp, cpc)), char*>::value), "");
ASSERT_SAME_TYPE(char*, decltype(strtok(cp, cpc)));
#endif
static_assert((std::is_same<decltype(memset(vp, 0, s)), void*>::value), "");
static_assert((std::is_same<decltype(strerror(0)), char*>::value), "");
static_assert((std::is_same<decltype(strlen(cpc)), size_t>::value), "");
ASSERT_SAME_TYPE(void*, decltype(memset(vp, 0, s)));
ASSERT_SAME_TYPE(char*, decltype(strerror(0)));
ASSERT_SAME_TYPE(size_t, decltype(strlen(cpc)));
return 0;
}

132
libcxx/test/std/depr/depr.c.headers/wchar_h.pass.cpp
View File

@ -45,6 +45,8 @@ int main(int, char**)
::va_list va;
char* ns = 0;
wchar_t* ws = 0;
const wchar_t* cws = 0;
wchar_t** wsp = 0;
((void)mb); // Prevent unused warning
((void)s); // Prevent unused warning
((void)tm); // Prevent unused warning
@ -53,75 +55,77 @@ int main(int, char**)
((void)va); // Prevent unused warning
((void)ns); // Prevent unused warning
((void)ws); // Prevent unused warning
static_assert((std::is_same<decltype(fwprintf(fp, L"")), int>::value), "");
static_assert((std::is_same<decltype(fwscanf(fp, L"")), int>::value), "");
static_assert((std::is_same<decltype(swprintf(ws, s, L"")), int>::value), "");
static_assert((std::is_same<decltype(swscanf(L"", L"")), int>::value), "");
static_assert((std::is_same<decltype(vfwprintf(fp, L"", va)), int>::value), "");
static_assert((std::is_same<decltype(vfwscanf(fp, L"", va)), int>::value), "");
static_assert((std::is_same<decltype(vswprintf(ws, s, L"", va)), int>::value), "");
static_assert((std::is_same<decltype(vswscanf(L"", L"", va)), int>::value), "");
static_assert((std::is_same<decltype(fgetwc(fp)), wint_t>::value), "");
static_assert((std::is_same<decltype(fgetws(ws, 0, fp)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(fputwc(L' ', fp)), wint_t>::value), "");
static_assert((std::is_same<decltype(fputws(L"", fp)), int>::value), "");
static_assert((std::is_same<decltype(fwide(fp, 0)), int>::value), "");
static_assert((std::is_same<decltype(getwc(fp)), wint_t>::value), "");
static_assert((std::is_same<decltype(putwc(L' ', fp)), wint_t>::value), "");
static_assert((std::is_same<decltype(ungetwc(L' ', fp)), wint_t>::value), "");
static_assert((std::is_same<decltype(wcstod(L"", (wchar_t**)0)), double>::value), "");
static_assert((std::is_same<decltype(wcstof(L"", (wchar_t**)0)), float>::value), "");
static_assert((std::is_same<decltype(wcstold(L"", (wchar_t**)0)), long double>::value), "");
static_assert((std::is_same<decltype(wcstol(L"", (wchar_t**)0, 0)), long>::value), "");
static_assert((std::is_same<decltype(wcstoll(L"", (wchar_t**)0, 0)), long long>::value), "");
static_assert((std::is_same<decltype(wcstoul(L"", (wchar_t**)0, 0)), unsigned long>::value), "");
static_assert((std::is_same<decltype(wcstoull(L"", (wchar_t**)0, 0)), unsigned long long>::value), "");
static_assert((std::is_same<decltype(wcscpy(ws, L"")), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsncpy(ws, L"", s)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcscat(ws, L"")), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsncat(ws, L"", s)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcscmp(L"", L"")), int>::value), "");
static_assert((std::is_same<decltype(wcscoll(L"", L"")), int>::value), "");
static_assert((std::is_same<decltype(wcsncmp(L"", L"", s)), int>::value), "");
static_assert((std::is_same<decltype(wcsxfrm(ws, L"", s)), size_t>::value), "");
static_assert((std::is_same<decltype(wcschr((wchar_t*)0, L' ')), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcschr((const wchar_t*)0, L' ')), const wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcscspn(L"", L"")), size_t>::value), "");
static_assert((std::is_same<decltype(wcslen(L"")), size_t>::value), "");
static_assert((std::is_same<decltype(wcspbrk((wchar_t*)0, L"")), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcspbrk((const wchar_t*)0, L"")), const wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsrchr((wchar_t*)0, L' ')), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsrchr((const wchar_t*)0, L' ')), const wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsspn(L"", L"")), size_t>::value), "");
static_assert((std::is_same<decltype(wcsstr((wchar_t*)0, L"")), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsstr((const wchar_t*)0, L"")), const wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcstok(ws, L"", (wchar_t**)0)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wmemchr((wchar_t*)0, L' ', s)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wmemchr((const wchar_t*)0, L' ', s)), const wchar_t*>::value), "");
static_assert((std::is_same<decltype(wmemcmp(L"", L"", s)), int>::value), "");
static_assert((std::is_same<decltype(wmemcpy(ws, L"", s)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wmemmove(ws, L"", s)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wmemset(ws, L' ', s)), wchar_t*>::value), "");
static_assert((std::is_same<decltype(wcsftime(ws, s, L"", tm)), size_t>::value), "");
static_assert((std::is_same<decltype(btowc(0)), wint_t>::value), "");
static_assert((std::is_same<decltype(wctob(w)), int>::value), "");
static_assert((std::is_same<decltype(mbsinit(&mb)), int>::value), "");
static_assert((std::is_same<decltype(mbrlen("", s, &mb)), size_t>::value), "");
static_assert((std::is_same<decltype(mbrtowc(ws, "", s, &mb)), size_t>::value), "");
static_assert((std::is_same<decltype(wcrtomb(ns, L' ', &mb)), size_t>::value), "");
static_assert((std::is_same<decltype(mbsrtowcs(ws, (const char**)0, s, &mb)), size_t>::value), "");
static_assert((std::is_same<decltype(wcsrtombs(ns, (const wchar_t**)0, s, &mb)), size_t>::value), "");
((void)cws); // Prevent unused warning
((void)wsp); // Prevent unused warning
ASSERT_SAME_TYPE(int, decltype(fwprintf(fp, L"")));
ASSERT_SAME_TYPE(int, decltype(fwscanf(fp, L"")));
ASSERT_SAME_TYPE(int, decltype(swprintf(ws, s, L"")));
ASSERT_SAME_TYPE(int, decltype(swscanf(L"", L"")));
ASSERT_SAME_TYPE(int, decltype(vfwprintf(fp, L"", va)));
ASSERT_SAME_TYPE(int, decltype(vfwscanf(fp, L"", va)));
ASSERT_SAME_TYPE(int, decltype(vswprintf(ws, s, L"", va)));
ASSERT_SAME_TYPE(int, decltype(vswscanf(L"", L"", va)));
ASSERT_SAME_TYPE(wint_t, decltype(fgetwc(fp)));
ASSERT_SAME_TYPE(wchar_t*, decltype(fgetws(ws, 0, fp)));
ASSERT_SAME_TYPE(wint_t, decltype(fputwc(L' ', fp)));
ASSERT_SAME_TYPE(int, decltype(fputws(L"", fp)));
ASSERT_SAME_TYPE(int, decltype(fwide(fp, 0)));
ASSERT_SAME_TYPE(wint_t, decltype(getwc(fp)));
ASSERT_SAME_TYPE(wint_t, decltype(putwc(L' ', fp)));
ASSERT_SAME_TYPE(wint_t, decltype(ungetwc(L' ', fp)));
ASSERT_SAME_TYPE(double, decltype(wcstod(L"", wsp)));
ASSERT_SAME_TYPE(float, decltype(wcstof(L"", wsp)));
ASSERT_SAME_TYPE(long double, decltype(wcstold(L"", wsp)));
ASSERT_SAME_TYPE(long, decltype(wcstol(L"", wsp, 0)));
ASSERT_SAME_TYPE(long long, decltype(wcstoll(L"", wsp, 0)));
ASSERT_SAME_TYPE(unsigned long, decltype(wcstoul(L"", wsp, 0)));
ASSERT_SAME_TYPE(unsigned long long, decltype(wcstoull(L"", wsp, 0)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcscpy(ws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcsncpy(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcscat(ws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcsncat(ws, L"", s)));
ASSERT_SAME_TYPE(int, decltype(wcscmp(L"", L"")));
ASSERT_SAME_TYPE(int, decltype(wcscoll(L"", L"")));
ASSERT_SAME_TYPE(int, decltype(wcsncmp(L"", L"", s)));
ASSERT_SAME_TYPE(size_t, decltype(wcsxfrm(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcschr(ws, L' ')));
ASSERT_SAME_TYPE(const wchar_t*, decltype(wcschr(cws, L' ')));
ASSERT_SAME_TYPE(size_t, decltype(wcscspn(L"", L"")));
ASSERT_SAME_TYPE(size_t, decltype(wcslen(L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcspbrk(ws, L"")));
ASSERT_SAME_TYPE(const wchar_t*, decltype(wcspbrk(cws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcsrchr(ws, L' ')));
ASSERT_SAME_TYPE(const wchar_t*, decltype(wcsrchr(cws, L' ')));
ASSERT_SAME_TYPE(size_t, decltype(wcsspn(L"", L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcsstr(ws, L"")));
ASSERT_SAME_TYPE(const wchar_t*, decltype(wcsstr(cws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(wcstok(ws, L"", wsp)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wmemchr(ws, L' ', s)));
ASSERT_SAME_TYPE(const wchar_t*, decltype(wmemchr(cws, L' ', s)));
ASSERT_SAME_TYPE(int, decltype(wmemcmp(L"", L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wmemcpy(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wmemmove(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(wmemset(ws, L' ', s)));
ASSERT_SAME_TYPE(size_t, decltype(wcsftime(ws, s, L"", tm)));
ASSERT_SAME_TYPE(wint_t, decltype(btowc(0)));
ASSERT_SAME_TYPE(int, decltype(wctob(w)));
ASSERT_SAME_TYPE(int, decltype(mbsinit(&mb)));
ASSERT_SAME_TYPE(size_t, decltype(mbrlen("", s, &mb)));
ASSERT_SAME_TYPE(size_t, decltype(mbrtowc(ws, "", s, &mb)));
ASSERT_SAME_TYPE(size_t, decltype(wcrtomb(ns, L' ', &mb)));
ASSERT_SAME_TYPE(size_t, decltype(mbsrtowcs(ws, (const char**)0, s, &mb)));
ASSERT_SAME_TYPE(size_t, decltype(wcsrtombs(ns, (const wchar_t**)0, s, &mb)));
#ifndef _LIBCPP_HAS_NO_STDIN
static_assert((std::is_same<decltype(getwchar()), wint_t>::value), "");
static_assert((std::is_same<decltype(vwscanf(L"", va)), int>::value), "");
static_assert((std::is_same<decltype(wscanf(L"")), int>::value), "");
ASSERT_SAME_TYPE(wint_t, decltype(getwchar()));
ASSERT_SAME_TYPE(int, decltype(vwscanf(L"", va)));
ASSERT_SAME_TYPE(int, decltype(wscanf(L"")));
#endif
#ifndef _LIBCPP_HAS_NO_STDOUT
static_assert((std::is_same<decltype(putwchar(L' ')), wint_t>::value), "");
static_assert((std::is_same<decltype(vwprintf(L"", va)), int>::value), "");
static_assert((std::is_same<decltype(wprintf(L"")), int>::value), "");
ASSERT_SAME_TYPE(wint_t, decltype(putwchar(L' ')));
ASSERT_SAME_TYPE(int, decltype(vwprintf(L"", va)));
ASSERT_SAME_TYPE(int, decltype(wprintf(L"")));
#endif
return 0;

40
libcxx/test/std/strings/c.strings/cwchar.pass.cpp
View File

@ -43,6 +43,8 @@ int main(int, char**)
char* ns = 0;
wchar_t* ws = 0;
const wchar_t* cws = 0;
wchar_t** wsp = 0;
((void)mb); // Prevent unused warning
((void)s); // Prevent unused warning
@ -52,6 +54,8 @@ int main(int, char**)
((void)va); // Prevent unused warning
((void)ns); // Prevent unused warning
((void)ws); // Prevent unused warning
((void)cws); // Prevent unused warning
((void)wsp); // Prevent unused warning
ASSERT_SAME_TYPE(int, decltype(std::fwprintf(fp, L"")));
ASSERT_SAME_TYPE(int, decltype(std::fwscanf(fp, L"")));
@ -69,13 +73,13 @@ int main(int, char**)
ASSERT_SAME_TYPE(std::wint_t, decltype(std::getwc(fp)));
ASSERT_SAME_TYPE(std::wint_t, decltype(std::putwc(L' ', fp)));
ASSERT_SAME_TYPE(std::wint_t, decltype(std::ungetwc(L' ', fp)));
ASSERT_SAME_TYPE(double, decltype(std::wcstod(L"", (wchar_t**)0)));
ASSERT_SAME_TYPE(float, decltype(std::wcstof(L"", (wchar_t**)0)));
ASSERT_SAME_TYPE(long double, decltype(std::wcstold(L"", (wchar_t**)0)));
ASSERT_SAME_TYPE(long, decltype(std::wcstol(L"", (wchar_t**)0, 0)));
ASSERT_SAME_TYPE(long long, decltype(std::wcstoll(L"", (wchar_t**)0, 0)));
ASSERT_SAME_TYPE(unsigned long, decltype(std::wcstoul(L"", (wchar_t**)0, 0)));
ASSERT_SAME_TYPE(unsigned long long, decltype(std::wcstoull(L"", (wchar_t**)0, 0)));
ASSERT_SAME_TYPE(double, decltype(std::wcstod(L"", wsp)));
ASSERT_SAME_TYPE(float, decltype(std::wcstof(L"", wsp)));
ASSERT_SAME_TYPE(long double, decltype(std::wcstold(L"", wsp)));
ASSERT_SAME_TYPE(long, decltype(std::wcstol(L"", wsp, 0)));
ASSERT_SAME_TYPE(long long, decltype(std::wcstoll(L"", wsp, 0)));
ASSERT_SAME_TYPE(unsigned long, decltype(std::wcstoul(L"", wsp, 0)));
ASSERT_SAME_TYPE(unsigned long long, decltype(std::wcstoull(L"", wsp, 0)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcscpy(ws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsncpy(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcscat(ws, L"")));
@ -84,20 +88,20 @@ int main(int, char**)
ASSERT_SAME_TYPE(int, decltype(std::wcscoll(L"", L"")));
ASSERT_SAME_TYPE(int, decltype(std::wcsncmp(L"", L"", s)));
ASSERT_SAME_TYPE(std::size_t, decltype(std::wcsxfrm(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcschr((wchar_t*)0, L' ')));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcschr((const wchar_t*)0, L' ')));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcschr(ws, L' ')));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcschr(cws, L' ')));
ASSERT_SAME_TYPE(std::size_t, decltype(std::wcscspn(L"", L"")));
ASSERT_SAME_TYPE(std::size_t, decltype(std::wcslen(L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcspbrk((wchar_t*)0, L"")));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcspbrk((const wchar_t*)0, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsrchr((wchar_t*)0, L' ')));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcsrchr((const wchar_t*)0, L' ')));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcspbrk(ws, L"")));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcspbrk(cws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsrchr(ws, L' ')));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcsrchr(cws, L' ')));
ASSERT_SAME_TYPE(std::size_t, decltype(std::wcsspn(L"", L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsstr((wchar_t*)0, L"")));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcsstr((const wchar_t*)0, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcstok(ws, L"", (wchar_t**)0)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemchr((wchar_t*)0, L' ', s)));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wmemchr((const wchar_t*)0, L' ', s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcsstr(ws, L"")));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wcsstr(cws, L"")));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wcstok(ws, L"", wsp)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemchr(ws, L' ', s)));
ASSERT_SAME_TYPE(const wchar_t*, decltype(std::wmemchr(cws, L' ', s)));
ASSERT_SAME_TYPE(int, decltype(std::wmemcmp(L"", L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemcpy(ws, L"", s)));
ASSERT_SAME_TYPE(wchar_t*, decltype(std::wmemmove(ws, L"", s)));