gcc/testsuite/gcc.c-torture/compile/20030902-1.c

   1 typedef unsigned int size_t;
   2 typedef unsigned long int reg_syntax_t;
   3 struct re_pattern_buffer
   4 {
   5   unsigned char *buffer;
   6 };
   7 typedef enum
   8 {
   9   jump,
  10   jump_n,
  11 } re_opcode_t;
  12 static int
  13 foo (bufp)
  14      struct re_pattern_buffer *bufp;
  15 {
  16   int mcnt;
  17   unsigned char *p = bufp->buffer;
  18   switch (((re_opcode_t) * p++))
  19     {
  20     unconditional_jump:
  21       ;
  22       /* This test case caused an ICE because the statement insertion
  23          routines were failing to update basic block boundaries.  */
  24     case jump:
  25       do
  26         {
  27           (mcnt) = *(p) & 0377;
  28         }
  29       while (0);
  30       (p) += 2;
  31       p += mcnt;
  32     case jump_n:
  33       (mcnt) = *(p + 2) & 0377;
  34       if (mcnt)
  35         goto unconditional_jump;
  36     }
  37 }