#include <stdio.h>
#include <unistd.h>

// used for getting backtraces
#include <execinfo.h>

// compiler command
// gcc backtrace.c -std=c99 -o backtrace -rdynamic

void myfunc3()
{
    const short SIZE = 64;

    void* btbuffer[SIZE];

    int levels = backtrace(btbuffer, SIZE);

    backtrace_symbols_fd(btbuffer, levels, STDOUT_FILENO);
}

void myfunc2()
{
    myfunc3();
}

void myfunc1()
{
    myfunc2();
}

int main(int argc, char** argv)
{
    myfunc1();
    return 0;
}