sdcc/support/regression/tests/bug-2959.c

   1 /*
   2    bug-2959.c
   3
   4    The pdk backends tried to do a 16-bit read from an __sfr instead of an 8-bit read followed by a cast.
   5 */
   6
   7 #include <testfwk.h>
   8
   9 // Test for all backends that can have an __sfr at 0x10.
  10 #if (defined(__SDCC_pdk13) || defined(__SDCC_pdk14) || defined(__SDCC_pdk15) || defined(__SDCC_z80) || defined(__SDCC_z180) || defined(__SDCC_ez80_z80))
  11 __sfr __at(0x10) _pa;
  12 #elif defined(__SDCC_mcs51)
  13 __sfr __at(0x99) _pa;
  14 #else
  15 unsigned char _pa;
  16 #endif
  17
  18 void f(void)
  19 {
  20   if( 0x10 == (_pa & 0x10) ) // Code generation crash here.
  21   {
  22     __asm__("nop\n");
  23   }
  24 }
  25
  26 void testBug(void)
  27 {
  28 }
  29