c-gcc, 56 bytes

Result

WA

Code [DL]

s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}

stdin

0688627499223735285995670913844470131270296168292593516668071880065930963333412126278076850434682051

stdout

stderr

/tmp/code.c:1:1: warning: data definition has no type or storage class
 s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}
 ^
/tmp/code.c:1:1: warning: type defaults to ‘int’ in declaration of ‘s’ [-Wimplicit-int]
/tmp/code.c:1:6: warning: return type defaults to ‘int’ [-Wimplicit-int]
 s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}
      ^
/tmp/code.c: In function ‘main’:
/tmp/code.c:1:13: warning: implicit declaration of function ‘qsort’ [-Wimplicit-function-declaration]
 s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}
             ^
/tmp/code.c:1:19: warning: implicit declaration of function ‘gets’ [-Wimplicit-function-declaration]
 s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}
                   ^
/tmp/code.c:1:31: warning: implicit declaration of function ‘strcmp’ [-Wimplicit-function-declaration]
 s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}
                               ^
/tmp/code.c:1:48: warning: implicit declaration of function ‘puts’ [-Wimplicit-function-declaration]
 s[1];main(){qsort(gets(s),100,strcmp(),strcmp);puts(s);}
                                                ^
/tmp/ccpyBZti.o: In function `main':
code.c:(.text.startup+0x10): warning: the `gets' function is dangerous and should not be used.
/home/esolang/bin/c-gcc: line 6:    13 Done                    cat -
        14 Segmentation fault      (core dumped) | /tmp/code

strace