sdcc/support/regression/tests/bug-2958.c

   1 /*
   2    bug-2958.c
   3
   4    The pdk backends didn't handle comparisons of __sfr for equality correctly, resulting in invalid asm.
   5 */
   6
   7 #include <testfwk.h>
   8
   9 // Test for all backends that can have an __sfr at 0x1f.
  10 #if (defined(__SDCC_pdk13) || defined(__SDCC_pdk14) || defined(__SDCC_pdk15) || defined(__SDCC_z80) || defined(__SDCC_z180) || defined(__SDCC_ez80_z80))
  11 __sfr __at(0x1f) _tm3ct;
  12 #elif defined(__SDCC_mcs51)
  13 __sfr __at(0x99) _tm3ct;
  14 #else
  15 unsigned char _tm3ct;
  16 #endif
  17
  18 void f(void)
  19 {
  20   unsigned char p=0;
  21   for(;;)
  22   {
  23     if(p == _tm3ct) continue;
  24
  25     do {
  26
  27     } while(++p != _tm3ct);
  28   }
  29 }
  30
  31 void testBug(void)
  32 {
  33 }
  34