sdcc/support/regression/tests/bug-2133.c

   1 /*      bug-2133.c
   2 */
   3
   4 #include <testfwk.h>
   5 #include <stdint.h>
   6
   7 typedef struct ABC { uint16_t aa, bb, cc; } ABC;
   8
   9 char __xdata buf[8] = { 1, 2, 3, 4, 5, 6, 7, 8 };
  10 ABC __xdata Abc = { 0x1111, 0x2222, 0x3333 };
  11
  12 void testBug2133(void)
  13 {
  14         ASSERT ( *(char*)&((*(ABC*) buf).cc) == 5); // no errors or warnings; this changes to __data pointer
  15         ASSERT ( *(char*)&((*(ABC*)&buf).cc) == 5); // sub-optimal code but okay
  16         ASSERT ( *(char*)&(((ABC*) buf)->cc) == 5); // uses generic pointer, otherwise okay
  17         ASSERT ( *(char*)&(((ABC*)&buf)->cc) == 5); // same sub-optimal code but okay
  18 }