VS2022 with MSVC 14.43.34808

Windows 11 Pro 24H2

Using CMake

I'm using HttpLib () in my module, and when compiling MSVC will be confused by chrono operations inside thread.h

H:\PROGRA~1\MICROS~1\2022\COMMUN~1\VC\Tools\MSVC\1443~1.348\bin\Hostx86\x64\cl.exe  /nologo /TP -Dtest_EXPORTS  /DWIN32 /D_WINDOWS /EHsc /Ob0 /Od /RTC1 -std:c++20 -MDd -Zi /showIncludes @CMakeFiles\test.dir\loader.cpp.obj.modmap /FoCMakeFiles\test.dir\loader.cpp.obj /FdCMakeFiles\test.dir\ /FS -c D:\Users\H5-A312\Desktop\network_projects\msvc_complie_test\loader.cpp
H:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\include\thread(170): error C2676: binary '+': 'const std::chrono::time_point<std::chrono::steady_clock,std::chrono::duration<__int64,std::ratio<1,1000000000>>>' does not define this operator or a conversion to a type acceptable to the predefined operator
H:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\include\xutility(2014): note: could be 'std::reverse_iterator<_BidIt1> std::operator +(reverse_iterator<_BidIt1>::difference_type,const std::reverse_iterator<_BidIt1> &) noexcept(<expr>)'
H:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.43.34808\include\thread(170): note: 'std::reverse_iterator<_BidIt1> std::operator +(reverse_iterator<_BidIt1>::difference_type,const std::reverse_iterator<_BidIt1> &) noexcept(<expr>)': could not deduce template argument for 'const std::reverse_iterator<_BidIt1> &' from 'const std::chrono::duration<__int64,std::ratio<1,1000>>'
...

MRE:

loader.cpp:

import client;

int main() {
    auto client = Client();
    return 0;
}

client.cppm:

module;

#include "httplib.h"

export module client;

export class Client
{
public:

    Client()
    {
    }

private:
    httplib::Client client = httplib::Client("localhost", 1080);
};

CMakeLists.txt:

cmake_minimum_required(VERSION 3.29)
project(test)

set(CMAKE_CXX_STANDARD 20)

add_library(test SHARED
        loader.cpp
)

target_sources(test PRIVATE
        FILE_SET modules TYPE CXX_MODULES
        BASE_DIRS
        ${PROJECT_SOURCE_DIR}
        FILES
        client.cppm
)

The problem only arises when the HttpLib reference is:

• Within a module
• Within a class
• Compiling with MSVC (as MSYS2-Clang can easily compile it)