liblzma_util.c:28: bad call to sprintf ?

[dcb]

I just got the GNU C compiler to say

In function 'sprintf',
    inlined from 'Util_CatchLZMAError' at src/liblzma_util.c:28:12:
/usr/include/bits/stdio2.h:33:3: warning: call to __builtin___sprintf_chk will always overflow destination buffer [enabled by default]
   return __builtin___sprintf_chk (__s, __USE_FORTIFY_LEVEL - 1,

Source code is

                char warning[50];
                sprintf(warning, "check type '%d' is unsupported, check will not be validated",
                        lzma_get_check(lzus));

Suggest increase size of warning buffer.