Compile Error: redeclaration of template feng::matrix_view #7
Description
System information/specifications:
- OS: Windows 11
- GNU Make 4.4.1
- g++.exe (Rev8, Built by MSYS2 project) 15.2.0
Using the provided source code, I receive the following errors:
$ make test
g++ -c -std=c++20 -Wall -Wextra -fmax-errors=1 -Ofast -flto=auto -funroll-all-loops -pipe -march=native -DPARALLEL -o ./test.o tests/test.cc
In file included from tests/test.cc:1:
tests/../matrix.hpp:4052:173: error: redeclaration of 'template<class Type, class Alloc> requires Allocator<Alloc> struct feng::matrix_view' with different constraints [-Wtemplate-body]
4052 | matrix_view<Type, Alloc>::matrix_view( matrix<Type, Alloc> const& mat, std::pair<size_type, size_type> const& row_dim, std::pair<size_type, size_type> const& col_dim ) noexcept: matrix_{ mat }
| ^~~~~~~~
compilation terminated due to -fmax-errors=1.
make: *** [Makefile:26: test] Error 1
$ make example
g++ -c -std=c++20 -Wall -Wextra -fmax-errors=1 -Ofast -flto=auto -funroll-all-loops -pipe -march=native -DPARALLEL -o ./example.o examples/example.cc
In file included from examples/example.cc:3:
examples/../matrix.hpp:4052:173: error: redeclaration of 'template<class Type, class Alloc> requires Allocator<Alloc> struct feng::matrix_view' with different constraints [-Wtemplate-body]
4052 | matrix_view<Type, Alloc>::matrix_view( matrix<Type, Alloc> const& mat, std::pair<size_type, size_type> const& row_dim, std::pair<size_type, size_type> const& col_dim ) noexcept: matrix_{ mat }
| ^~~~~~~~
compilation terminated due to -fmax-errors=1.
Please note that I am able to get programs to compile using matrix.hpp, so long as they do not use any of the important functions (i.e. .save_as_bmp(), lu_solver(), svd(), etc...). For instance, the following alteration of the provided main.cpp file will compile and run just fine:
#include "matrix.hpp"
int main()
{
feng::matrix<double> m{ 64, 256 };
int starter = 0;
double const keys[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
for (auto& x : m)
{
int val = starter++ & 0x7;
x = keys[val];
}
// m.save_as_bmp("./images/0000_access.bmp");
return 0;
}
Unfortunately, this greatly hinders the usefulness of matrix.hpp. Any ideas for fixes? I'm unsure if this is a problem constrained to my machine or if others are experiencing something similar using my system specifications.