sdcc/support/regression/tests/gcc-torture-execute-20020213-1.c

   1 /*
   2    20020213-1.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 #pragma disable_warning 85
  12
  13 /* PR c/5681
  14    This testcase failed on IA-32 at -O0, because safe_from_p
  15    incorrectly assumed it is safe to first write into a.a2 b-1
  16    and then read the original value from it.  */
  17
  18 int bar (float);
  19
  20 struct A {
  21   float a1;
  22   int a2;
  23 } a;
  24
  25 int b;
  26
  27 void foo (void)
  28 {
  29   a.a2 = bar (a.a1);
  30   a.a2 = a.a2 < b - 1 ? a.a2 : b - 1;
  31   if (a.a2 >= b - 1)
  32     ASSERT (0);
  33 }
  34
  35 int bar (float x)
  36 {
  37   return 2241;
  38 }
  39
  40 void
  41 testTortureExecute (void)
  42 {
  43   a.a1 = 1.0f;
  44   b = 3384;
  45   foo ();
  46 }
  47