modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/compile/20020319-1.c (about)

     1  /* This testcase ICEd in combine.c:do_SUBST() self-test for sign-extended
     2  CONST_INT because expr.c:expand_expr() was not sign-extending array index
     3  into constant strings.  */
     4  
     5  typedef unsigned char uch;
     6  extern uch outbuf[];
     7  extern unsigned outcnt;
     8  
     9  extern void flush_outbuf (void);
    10  
    11  int zip(void)
    12  {
    13    outcnt = 0;
    14  
    15      {outbuf[outcnt++]=(uch)("\037\213"[0]); if (outcnt==16384) flush_outbuf();};
    16      {outbuf[outcnt++]=(uch)("\037\213"[1]); if (outcnt==16384) flush_outbuf();};
    17  
    18    return 0;
    19  }
    20