sdcc/support/regression/tests/gcc-torture-execute-pr15262.c

   1 /*
   2    pr15262.c from the execute part of the gcc torture tests.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #ifdef __SDCC
   8 #pragma std_c99
   9 #endif
  10
  11 /* We used to mis-compile this testcase as we did not know that
  12    &a+offsetof(b,a) was the same as &a.b */
  13 struct A
  14 {
  15   int t;
  16   int i;
  17 };
  18
  19 void
  20 bar (float *p)
  21 {
  22   *p = 5.2;
  23 }
  24
  25 #ifndef __SDCC_pdk14 // Lack of memory
  26 int
  27 foo(struct A *locp, int i, int str)
  28 {
  29   float f, g, *p;
  30   int T355;
  31   int *T356;
  32   /* Currently, the alias analyzer has limited support for handling
  33      aliases of structure fields when no other variables are aliased.
  34      Introduce additional aliases to confuse it.  */
  35   p =  i ? &g : &f;
  36   bar (p);
  37   if (*p > 0.0)
  38     str = 1;
  39
  40   T355 = locp->i;
  41   T356 = &locp->i;
  42   *T356 = str;
  43   T355 = locp->i;
  44
  45   return T355;
  46 }
  47 #endif
  48
  49 void
  50 testTortureExecute (void)
  51 {
  52 #ifndef __SDCC_pdk14 // Lack of memory
  53   struct A loc;
  54   int str;
  55
  56   loc.i = 2;
  57   str = foo (&loc, 10, 3);
  58   if (str!=1)
  59     ASSERT (0);
  60   return;
  61 #endif
  62 }
  63