sdcc/support/regression/tests/bug-3675.c

   1 /* bug-3642.c
   2    A bug in handling of parameters to nested function calls (outer one explicit, inner one via helper function)
   3    that resulted in a register parameter being sent to the wrong function.
   4 */
   5
   6 #include <testfwk.h>
   7
   8 struct s
   9 {
  10         unsigned int i;
  11 };
  12
  13 // Need a function where the first paremeter is an integer parameter small enough to be passed in registers, followed by a struct parameter.
  14 void f(unsigned int i, struct s s)
  15 {
  16         ASSERT (i == 0x5a5a);
  17         ASSERT (s.i == 0xa5a5);
  18 }
  19
  20 void
  21 testBug (void)
  22 {
  23 #ifndef __SDCC_ds390 // Fails to link
  24         struct s s = {0xa5a5};
  25
  26         f(0x5a5a, s); // When passing s, a memcpy call will be used as helper function. The 0x5a5a will be passed as if it was an additional parameter to that memcpy instead of being passed to f.
  27 #endif
  28 }
  29