<ctime>: time()/localtime()/mktime() emit error C2129: static function declared but not defined #21
Description
Basic Info
-
I have read the rules for the Standard Library Modules Bug Bash.
-
I have pulled and rebuilt the
bug-bashbranch in the last 24 hours. -
My current commit, as printed by
git rev-parse HEAD, is: 83b0eb5 -
This bug is: rejects-valid
Command-Line Test Case
My test case that works with classic includes but fails with named modules:
D:\GitHub\STL>type purr.cpp
#ifdef USE_CLASSIC_INCLUDES
#include <cstdio>
#include <ctime>
#else
import std;
#endif
#pragma warning(disable : 4996) // CRT deprecation of localtime()
int main() {
#ifdef USE_CLASSIC_INCLUDES
std::puts("Classic includes.");
#else
std::puts("Named modules.");
#endif
const std::time_t now = std::time(nullptr);
std::tm local = *std::localtime(&now);
const std::time_t round_trip = std::mktime(&local);
std::printf(" now: %lld\n", static_cast<long long>(now));
std::printf("local.tm_year + 1900: %d\n", local.tm_year + 1900);
std::printf(" round_trip: %lld\n", static_cast<long long>(round_trip));
std::puts("Done!");
}D:\GitHub\STL>cl /EHsc /nologo /W4 /std:c++latest /MTd /Od /DUSE_CLASSIC_INCLUDES purr.cpp && purr.exe
purr.cpp
Classic includes.
now: 1659072489
local.tm_year + 1900: 2022
round_trip: 1659072489
Done!
D:\GitHub\STL>cl /EHsc /nologo /W4 /std:c++latest /MTd /Od purr.cpp std.obj && purr.exe
purr.cpp
purr.cpp(27): error C2129: static function 'tm *localtime(const __int64 *const )' declared but not defined
C:\Program Files (x86)\Windows Kits\10\include\10.0.22000.0\ucrt\time.h(495): note: see declaration of 'localtime'
Additional Context
Found by building tests/tr1/tests/chrono, ctime, cwchar2, locale3, locale4 with modules.
Each of time(), localtime(), mktime() will emit this error if they're the only call in the TU.