Comment by chasil

This appears to demonstrate the full range of abuse.

    $ mkdir hold
    $ cd hold

    $ cat ../wildname.c 
    #include <stdio.h>
    int main(int argc, char **argv)
    { char n[256]; int i,j=0; FILE *fp;

      for(i=1; i<256; i++) if(i!=47) n[j++] = i; n[j] = 0;
      if(fp = fopen(n, "w")) { fprintf(fp, "hello world!"); fclose(fp); }
    }

    $ cc ../wildname.c 
    $ ./a.out

    $ ls -l
    total 16
    -rw-r--r--. 1 luser lgroup   12 Nov 11 16:32 ??????????????????????????????? !"#$%&'()*+,-.0123456789:;<=>? 
 
 
 @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

    -rwxr-xr-x. 1 luser lgroup 8464 Nov 11 16:32 a.out

Just because you can do something does not mean that you should.