[Bug 59226] New: unimplemented function msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info using the STL

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59226

            Bug ID: 59226
           Summary: unimplemented function
                    msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info using
                    the STL
           Product: Wine
           Version: 10.16
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcp
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 80130
  --> http://bugs.winehq.org/attachment.cgi?id=80130
wine output when running the mentioned C++ code

Using std::chrono::time_zone::to_local causes unhandled exception.

Unhandled exception: unimplemented function
msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info called in 64-bit code
(0x006fffffbfd817).

The code i used to test this:
#include <iostream>
#include <chrono>
int main() {
    std::cout << std::format("Encountered on: {:%F %T}",
std::chrono::floor<std::chrono::seconds>(std::chrono::current_zone()->to_local(std::chrono::system_clock::now())))
<< std::endl;
    return 0;
}

The crash happens in "to_local" which calls "_Get_info" which calls
"__std_tzdb_get_sys_info".

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[Bug 59226] unimplemented function msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info using the STL

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59226

[e-mail] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from [e-mail] ---
Dolphin Emulator is an application that makes use of this since version
2503-152.

First broken version link:
https://dl.dolphin-emu.org/builds/ee/fc/dolphin-master-2503-152-x64.7z
PR link: https://github.com/dolphin-emu/dolphin/pull/13433

Reproduction steps:
- Launch the application
- Go to Tools > Perform Online System Update > Any region
- Tools > Load Wii System Menu
- Crash

```
wine: Call from 00006FFFFFBED8A7 to unimplemented function
msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info, aborting
wine: Unimplemented function msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info
called at address 00006FFFFFBED8A7 (thread 0184), starting debugger...
wine: Call from 00006FFFFFBED8A7 to unimplemented function
msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info, aborting
```

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[Bug 59226] unimplemented function msvcp140_atomic_wait.dll.__std_tzdb_get_sys_info using the STL

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59226

[e-mail] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #2 from [e-mail] ---
Can confirm this is still an issue as of 11.13 and even current master (commit
7364e9021229f000670b42acfd8e2fb2d6c00cd7). I have reproduced this while
creating my own program with the following code:

std::wstring GetAutoGeneratedName() {
    // e.g. 2026-07-05 17-23-54.mp4
    auto now = std::chrono::zoned_time{std::chrono::current_zone(), 
                                        std::chrono::system_clock::now()};
    auto local =
std::chrono::floor<std::chrono::seconds>(now.get_local_time());
    return std::format(L"{:%Y-%m-%d %H-%M-%S}.mp4", local);
}

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