[Bug c++/106584] New: g++ not showing correct line number in "use of deleted function" error

[accelerator0099 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106584

            Bug ID: 106584
           Summary: g++ not showing correct line number in "use of deleted
                    function" error
           Product: gcc
           Version: 12.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: accelerator0099 at gmail dot com
  Target Milestone: ---

Example code:
----------------------------------------------------
#include <map>
#include <memory>

using int_map = std::map<int, std::unique_ptr<int>>;

void f(int_map cl);

void f2() {
    int_map cl;
    f(cl);
}
----------------------------------------------------

The actual error is that int_map is not copiable, so line 10 is ill-formed
But the compiler doesn't tell you anything about line 10, it just prints tons
of waste

This is unreasonable. You may make such a careless mistake (missing a '&') in
thousands of lines, the compiler should locate where the error is for you.