sdcc/support/regression/tests/bug-477835.c

   1 /* Registers not being saved.
   2  */
   3 #include <testfwk.h>
   4
   5 /* In the following code BC is assigned a copy of fp, but bc is not
   6    saved across the call.
   7 */
   8 void
   9 fptr(void (*fp)(void))
  10 {
  11   int i;
  12   for (i = 0; i < 50; i++)
  13     (*fp)();
  14 }
  15
  16 void dummy(void (*fp)(void))
  17 {
  18   UNUSED(fp);
  19 }
  20
  21 /* This code has the same logic above, but bc is saved.
  22  */
  23 void
  24 fptr2(void (*fp)(void))
  25 {
  26   int i;
  27   void (*fp2)(void) = fp;
  28
  29   for (i = 0; i < 50; i++)
  30     dummy(fp2);
  31 }
  32
  33 void testBug(void)
  34 {
  35 }