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


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/*
   920922-1.c from the execute part of the gcc torture suite.
 */

#include <testfwk.h>

#ifdef __SDCC
#pragma std_c99
#endif

unsigned long*
f(unsigned long *p)
{
  unsigned long a = (*p++) >> 24;
  return p + a;
}

void
testTortureExecute (void)
{
// 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.
#if !(defined(__SDCC_mcs51) && defined(__SDCC_STACK_AUTO)) && !defined(__SDCC_pdk14) && !defined(__SDCC_pdk15)
  unsigned long x = 0x80000000UL;
  if (f(&x) != &x + 0x81)
    ASSERT(0);
  return;
#endif
}