sdcc/support/regression/tests/gcc-torture-execute-920922-1.c

   1 /*
   2    920922-1.c from the execute part of the gcc torture suite.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #ifdef __SDCC
   8 #pragma std_c99
   9 #endif
  10
  11 unsigned long*
  12 f(unsigned long *p)
  13 {
  14   unsigned long a = (*p++) >> 24;
  15   return p + a;
  16 }
  17
  18 void
  19 testTortureExecute (void)
  20 {
  21 // Incrementing pointers that far past the object is undefined behaviour and mcs51 indeed does the addition differently here (where it knows &x points to the stack) than in f.
  22 #if !(defined(__SDCC_mcs51) && defined(__SDCC_STACK_AUTO)) && !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15)
  23   unsigned long x = 0x80000000UL;
  24   if (f(&x) != &x + 0x81)
  25     ASSERT(0);
  26   return;
  27 #endif
  28 }
  29