Describe the bug
Chrono formatting depends on locale by default and doesn't provide control over locale which is inconsistent with all the other standard formatters (https://cplusplus.github.io/LWG/issue3547).
Command-line test case
C:\test>type test.cc
#include <chrono>
#include <format>
#include <iostream>
int main() {
std::locale::global(std::locale("ru_RU"));
std::cout << std::format("{}\n", 0.042);
std::cout << std::format("{:%S}\n", std::chrono::milliseconds(42));
}
C:\test>cl test.cc /std:c++latest /I STL/stl/inc STL/stl/src/format.cpp /EHsc
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.29917 for x64
Copyright (C) Microsoft Corporation. All rights reserved.
/std:c++latest is provided as a preview of language features from the latest C++
working draft, and we're eager to hear about bugs and suggestions for improvements.
However, note that these features are provided as-is without support, and subject
to changes or removal as the working draft evolves. See
https://go.microsoft.com/fwlink/?linkid=2045807 for details.
cl : Command line warning D9026 : options apply to entire command line
test.cc
format.cpp
Generating Code...
Microsoft (R) Incremental Linker Version 14.29.29917.0
Copyright (C) Microsoft Corporation. All rights reserved.
/out:test.exe
test.obj
format.obj
C:\test>test
0.042
00,042
Expected behavior
Expected the output to be
i.e. not depend on the locale.
STL version
f675d68
Describe the bug
Chrono formatting depends on locale by default and doesn't provide control over locale which is inconsistent with all the other standard formatters (https://cplusplus.github.io/LWG/issue3547).
Command-line test case
Expected behavior
Expected the output to be
i.e. not depend on the locale.
STL version
f675d68