sdcc/support/regression/tests/bug-2539.c

   1 /*
   2    bug-2539.c
   3 */
   4
   5 #include <testfwk.h>
   6
   7 #include <stdint.h>
   8
   9 struct sBITS {
  10   unsigned  b0 : 1;
  11   unsigned  b1 : 1;
  12   unsigned  b2 : 1;
  13   unsigned  b3 : 1;
  14   unsigned  b4 : 1;
  15   unsigned  b5 : 1;
  16   unsigned  b6 : 1;
  17   unsigned  b7 : 1;
  18 };
  19 struct sBITS vb;
  20
  21 void SetIf(uint8_t x)
  22 {
  23   vb.b3 = (x != 0); // only bit 0 of 'x' testet
  24 }
  25
  26 void testBug(void)
  27 {
  28   SetIf(0);
  29
  30   ASSERT(!vb.b3);
  31
  32   SetIf(24);
  33
  34   ASSERT(vb.b3);
  35 }
  36