I have a custom container with appropriate iterators, push_back method, etc. This used to work up until fmt 10.0.2
I haven't yet been able to set up a minimal example to reproduce this.
However, the issue arise from this line where back_inserter is used without the std:: prefix (maybe you wanted to use your own invoke_back_inserter?)
The issue was seen when compiling C++23
GCC 14.1.0 (Linux)
.../opt/conda/envs/dev/include/fmt/base.h:1089:48: error: 'back_inserter' was not declared in this scope; did you mean 'std::back_inserter'?
1089 | auto out() -> OutputIt { return back_inserter(container_); }
| ~~~~~~~~~~~~~^~~~~~~~~~~~
| std::back_inserter
Clang 18.1.8 (MacOS)
.../opt/conda/envs/dev/include/fmt/base.h:1089:35: error: use of undeclared identifier 'back_inserter'
1089 | auto out() -> OutputIt { return back_inserter(container_); }
|
I can work around this by defining back_inserter in the global namespace before including any of the fmt headers.
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