warning: ‘CLASS’ has a field ‘CLASS::spline_’ whose type uses the anonymous namespace

[strotz]

Usage of spline as a member of class creates warning.

#include "spline/spline.h"
class CLASS {
tk::spline spline_;
}

[ttk592]

Unfortunately, I can't reproduce that warning. The above example as well as examples/tests/myfunc1.cpp compiles for me without any warnings. Let me know if you have another example or which compiler causes this.

[mutluit]

I have an older version of spline.h (haven't checked yet the difference to the latest version),
and there I too get such a funny warning (btw, the line numbers below can be different due to additions of dbg code and comments):

$ g++ -O2 -Wall -Wextra -std=c++20 -o spline_demo.exe spline_demo.cpp
In file included from spline_demo.cpp:13:
spline.h:277:6: warning: ‘void {anonymous}::tk::spline::set_boundary({anonymous}::tk::spline::bd_type, double, {anonymous}::tk::spline::bd_type, double, bool)’ defined but not used [-Wunused-function]
277 | void spline::set_boundary(spline::bd_type left, double left_value,
| ^~~~~~

OS is Linux and Compiler is g++ version this below:
$ g++ --version
g++ (Debian 10.2.1-6) 10.2.1 20210110
...

[SprintKeyz]

I have the same issue, although the code itself compiles fine.