sdcc/support/regression/tests/bug-221100.c

   1 /* bug-221100.c
   2
   3    If test_index is char, loses high bit when indexes table
   4    workaround is to use [(unsigned int) test_index]
   5  */
   6 #include <testfwk.h>
   7
   8 #define ARRAY_SIZE  130
   9
  10 #if defined(__SDCC_pic16) || defined(__SDCC_pdk14) || defined(__SDCC_pdk15)
  11 /* not enough pic16 / pdk14 data space, so put the array into the code memory */
  12 const static unsigned int
  13 testArray[ARRAY_SIZE] = {
  14     0,   1,   2,   3,   4,   5,   6,   7,   8,   9,
  15    10,  11,  12,  13,  14,  15,  16,  17,  18,  19,
  16    20,  21,  22,  23,  24,  25,  26,  27,  28,  29,
  17    30,  31,  32,  33,  34,  35,  36,  37,  38,  39,
  18    40,  41,  42,  43,  44,  45,  46,  47,  48,  49,
  19    50,  51,  52,  53,  54,  55,  56,  57,  58,  59,
  20    60,  61,  62,  63,  64,  65,  66,  67,  68,  69,
  21    70,  71,  72,  73,  74,  75,  76,  77,  78,  79,
  22    80,  81,  82,  83,  84,  85,  86,  87,  88,  89,
  23    90,  91,  92,  93,  94,  95,  96,  97,  98,  99,
  24   100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
  25   110, 111, 112, 113, 114, 115, 116, 117, 118, 119,
  26   120, 121, 122, 123, 124, 125, 126, 127, 128, 129,
  27 };
  28 #else
  29 __xdata static unsigned int
  30 testArray[ARRAY_SIZE];
  31 #endif
  32
  33
  34 static unsigned int test_int;
  35 static unsigned char test_index;
  36
  37 static void
  38 fetch (void)
  39 {
  40   test_int = testArray [test_index];
  41 }
  42
  43 static void
  44 testUnsignedCharIndex (void)
  45 {
  46 #if !defined(__SDCC_pic16) && !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15)
  47   int i;
  48   for (i = 0; i < 130; i++) {
  49     testArray[i] = i;
  50   }
  51 #endif
  52
  53   test_index = 5;
  54   fetch ();
  55   ASSERT (test_int == 5);
  56
  57   test_index = 129;
  58   fetch ();
  59   ASSERT (test_int == 129);
  60 }