c++ 看 calling function name

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

int j, nptrs;
 void *buffer[100];
 char **strings;
 nptrs = backtrace(buffer, 100);
 printf("haha backtrace() returned %d addresses\n", nptrs);
 strings = backtrace_symbols(buffer, nptrs);
   if (strings == NULL) {
       perror("backtrace_symbols");
       exit(EXIT_FAILURE);
   }

   for (j = 0; j < nptrs; j++)
       printf("haha %s\n", strings[j]);
   free(strings);

Makefile加入:
CFLAGS +=  -rdynamic