support/regression/tests/gcc-torture-execute-20080522-1.c


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/*
   20080522-1.c from the execute part of the gcc torture tests.
 */

#include <testfwk.h>

#ifdef __SDCC
#pragma std_c99
#endif

/* This testcase is to make sure we have i in referenced vars and that we
   properly compute aliasing for the loads and stores.  */

static int i;
static int *p = &i;

int
foo(int *q)
{
  *p = 1;
  *q = 2;
  return *p;
}

int
bar(int *q)
{
  *q = 2;
  *p = 1;
  return *q;
}

void
testTortureExecute (void)
{
  int j = 0;

  if (foo(&i) != 2)
    ASSERT (0);
  if (bar(&i) != 1)
    ASSERT (0);
  if (foo(&j) != 1)
    ASSERT (0);
  if (j != 2)
    ASSERT (0);
  if (bar(&j) != 2)
    ASSERT (0);
  if (j != 2)
    ASSERT (0);

  return;
}