ret_code         4163 gc/os_dep.c    		int ret_code;
ret_code         4168 gc/os_dep.c    		  ret_code = readlink("/proc/self/exe", exe_name, EXE_SZ);
ret_code         4169 gc/os_dep.c    		  if (ret_code < 0 || ret_code >= EXE_SZ
ret_code         4174 gc/os_dep.c    		  exe_name[ret_code] = '\0';