sdcc/support/regression/tests/bug-2501.c.in

   1 /* bug-2501.c
   2    A bug in the z80 and stm8 register allocators when dealing with results from dummy volatile long long reads via pointer.
   3
   4    type: long, long long
   5  */
   6
   7 #include <testfwk.h>
   8
   9 #pragma disable_warning 85
  10
  11 typedef {type} l_t;
  12
  13 extern l_t x_llabs(l_t i);
  14 extern char *x_lltoa(l_t i, char *buf, int radix);
  15
  16 struct long_s
  17 {
  18    unsigned long ls32;
  19    unsigned long ms32;
  20 };
  21
  22 union u64_s
  23 {
  24    l_t a;
  25    struct long_s b;
  26 };
  27
  28 #ifndef __SDCC_pdk14 // Lack of memory
  29 char buff[10];
  30
  31 union u64_s z = {0xaa55};
  32 #endif
  33
  34 void testBug(void)
  35 {
  36 #ifndef __SDCC_pdk14 // Lack of memory
  37    z.a = x_llabs(z.a);
  38    x_lltoa(z.a, buff, 10);
  39 #endif
  40 }
  41
  42 l_t x_llabs(l_t i)
  43 {
  44    return i >= 0 ? i : -1;
  45 }
  46
  47 char *x_lltoa(l_t i, char *buf, int radix)
  48 {
  49    ASSERT (i == 0xaa55);
  50 }
  51