gcc/testsuite/gcc.dg/torture/pr43017.c

   1 /* { dg-do run } */
   2 /* { dg-options "-fwrapv" } */
   3
   4 signed char foo(unsigned char c2)
   5 {
   6   signed char c2_22;
   7
   8   if (c2 <= 63 || c2 == 127)
   9     goto bb43;
  10   else
  11     goto bb20;
  12
  13 bb20:
  14   if (c2 > 252)
  15     goto bb43;
  16   else
  17     goto bb21;
  18
  19 bb21:
  20   /*...*/;
  21
  22 bb24:
  23   c2_22 = (signed char)c2;
  24   if (c2_22 >= 0)
  25     goto bb25;
  26   else
  27     goto bb26;
  28
  29 bb25:
  30   c2 = (unsigned char)(c2_22 - 64);
  31   goto bb27;
  32
  33 bb26:
  34   c2 = (unsigned char)(c2_22 - 65);
  35
  36 bb27:
  37   if (c2 <= 93)
  38     goto bb28;
  39   else
  40     goto bb29;
  41
  42 bb28:
  43   c2 = c2 + 33;
  44   goto bb30;
  45
  46 bb29:
  47   c2 = (unsigned char)((signed char)c2 - 61);
  48
  49 bb30:
  50   return c2;
  51
  52 bb43:
  53   return -1;
  54 }
  55 extern void abort (void);
  56 int main()
  57 {
  58   signed char res[256] = {
  59       -1, -1, -1, -1, -1, -1, -1, -1,
  60       -1, -1, -1, -1, -1, -1, -1, -1,
  61       -1, -1, -1, -1, -1, -1, -1, -1,
  62       -1, -1, -1, -1, -1, -1, -1, -1,
  63       -1, -1, -1, -1, -1, -1, -1, -1,
  64       -1, -1, -1, -1, -1, -1, -1, -1,
  65       -1, -1, -1, -1, -1, -1, -1, -1,
  66       -1, -1, -1, -1, -1, -1, -1, -1,
  67       33, 34, 35, 36, 37, 38, 39, 40,
  68       41, 42, 43, 44, 45, 46, 47, 48,
  69       49, 50, 51, 52, 53, 54, 55, 56,
  70       57, 58, 59, 60, 61, 62, 63, 64,
  71       65, 66, 67, 68, 69, 70, 71, 72,
  72       73, 74, 75, 76, 77, 78, 79, 80,
  73       81, 82, 83, 84, 85, 86, 87, 88,
  74       89, 90, 91, 92, 93, 94, 95, -1,
  75       96, 97, 98, 99, 100, 101, 102, 103,
  76       104, 105, 106, 107, 108, 109, 110, 111,
  77       112, 113, 114, 115, 116, 117, 118, 119,
  78       120, 121, 122, 123, 124, 125, 126, 33,
  79       34, 35, 36, 37, 38, 39, 40, 41,
  80       42, 43, 44, 45, 46, 47, 48, 49,
  81       50, 51, 52, 53, 54, 55, 56, 57,
  82       58, 59, 60, 61, 62, 63, 64, 65,
  83       66, 67, 68, 69, 70, 71, 72, 73,
  84       74, 75, 76, 77, 78, 79, 80, 81,
  85       82, 83, 84, 85, 86, 87, 88, 89,
  86       90, 91, 92, 93, 94, 95, 96, 97,
  87       98, 99, 100, 101, 102, 103, 104, 105,
  88       106, 107, 108, 109, 110, 111, 112, 113,
  89       114, 115, 116, 117, 118, 119, 120, 121,
  90       122, 123, 124, 125, 126, -1, -1, -1
  91   };
  92   unsigned int c;
  93   for (c = 0; c <= 255; ++c)
  94     {
  95       if (foo (c) != res[c])
  96         abort ();
  97     }
  98   return 0;
  99 }