`name()` returns the wrong result with libbacktrace backend and mingw

[prbegd]

I'm building with mingw-w64 on Windows and using libbacktrace as implementation. When getting function names using name() on a frame, the wrong result as register_frame_ctor was returned.

Here is an example:

#define BOOST_STACKTRACE_USE_BACKTRACE
#include <backtrace.h>
#include <boost/stacktrace.hpp>
#include <iostream>

int main()
{
    boost::stacktrace::stacktrace trace;
    for (unsigned i = 0; i < trace.size(); ++i) {
        std::cout << i << "# " << trace[i].name() << '\n';
    }
    return 0;
}

Result:

PS C:\demo> g++ main.cpp -o main.exe -lbacktrace -std=c++20 -g
PS C:\demo> ./main
0# register_frame_ctor
1# register_frame_ctor
2# register_frame_ctor
3# register_frame_ctor
4# register_frame_ctor
5# register_frame_ctor

Environment

• OS: Windows 11 24H2
• Compiler: MinGW-w64 GCC 14.2.0 x86_64 posix-seh-msvcrt

I have opened a pr #224 that fixes this issue.