|  | libc { | 
|  | GLIBC_2.1 { | 
|  | # functions used in other libraries | 
|  | __backtrace; __backtrace_symbols; __backtrace_symbols_fd; | 
|  |  | 
|  | # b* | 
|  | backtrace; backtrace_symbols; backtrace_symbols_fd; | 
|  | } | 
|  | GLIBC_2.2 { | 
|  | # These are to support some gcc features. | 
|  | __cyg_profile_func_enter; __cyg_profile_func_exit; | 
|  | } | 
|  | GLIBC_2.3.4 { | 
|  | __chk_fail; | 
|  | __memcpy_chk; __memmove_chk; __mempcpy_chk; __memset_chk; __stpcpy_chk; | 
|  | __strcat_chk; __strcpy_chk; __strncat_chk; __strncpy_chk; | 
|  | __sprintf_chk; __vsprintf_chk; __snprintf_chk; __vsnprintf_chk; | 
|  | __printf_chk; __fprintf_chk; __vprintf_chk; __vfprintf_chk; | 
|  | __gets_chk; | 
|  | } | 
|  | GLIBC_2.4 { | 
|  | __fgets_chk; __fgets_unlocked_chk; | 
|  | __read_chk; __pread_chk; __pread64_chk; | 
|  | __readlink_chk; __getcwd_chk; __getwd_chk; | 
|  | __recv_chk; __recvfrom_chk; | 
|  | __realpath_chk; __wctomb_chk; | 
|  | __stpncpy_chk; | 
|  | __wcscpy_chk; __wmemcpy_chk; __wmemmove_chk; __wmempcpy_chk; __wcpcpy_chk; | 
|  | __wcsncpy_chk; __wcscat_chk; __wcsncat_chk; __wmemset_chk; __wcpncpy_chk; | 
|  | __swprintf_chk; __vswprintf_chk; __wprintf_chk; __fwprintf_chk; | 
|  | __vwprintf_chk; __vfwprintf_chk; __fgetws_chk; __fgetws_unlocked_chk; | 
|  | __confstr_chk; __getgroups_chk; __ttyname_r_chk; | 
|  | __gethostname_chk; __getdomainname_chk; __wcrtomb_chk; __mbsnrtowcs_chk; | 
|  | __wcsnrtombs_chk; __mbsrtowcs_chk; __wcsrtombs_chk; __mbstowcs_chk; | 
|  | __wcstombs_chk; | 
|  |  | 
|  | __stack_chk_fail; | 
|  | } | 
|  | GLIBC_2.5 { | 
|  | __readlinkat_chk; | 
|  | } | 
|  | GLIBC_2.7 { | 
|  | __fread_chk; __fread_unlocked_chk; | 
|  | } | 
|  | GLIBC_2.8 { | 
|  | __asprintf_chk; __vasprintf_chk;  __dprintf_chk; __vdprintf_chk; | 
|  | __obstack_printf_chk; __obstack_vprintf_chk; | 
|  | } | 
|  | GLIBC_2.11 { | 
|  | __longjmp_chk; | 
|  | } | 
|  | GLIBC_2.15 { | 
|  | __fdelt_chk; __fdelt_warn; | 
|  | } | 
|  | GLIBC_2.16 { | 
|  | __poll_chk; __ppoll_chk; | 
|  | } | 
|  | GLIBC_PRIVATE { | 
|  | __fortify_fail; | 
|  | } | 
|  | } |