sdcc/support/regression/tests/bug-3256.c

   1 /*
   2    bug-3256.c
   3    A bug in the stm8 peephole optimizer for functions calls through function pointers where the caller has no non-pointer calls, and the callee has register arguments.
   4  */
   5
   6 #include <testfwk.h>
   7
   8 #ifndef __SDCC_stm8
   9 #define __raisonance
  10 #endif
  11
  12 int (*volatile twocharargptr)(char, char) __raisonance __reentrant;
  13
  14 int f(void)
  15 {
  16         return (*twocharargptr)(23, 42);
  17 }
  18
  19 int twochararg(char a, char b) __raisonance __reentrant
  20 {
  21         return a + b;
  22 }
  23
  24 void
  25 testBug(void)
  26 {
  27         twocharargptr = &twochararg;
  28         ASSERT (f() == 23 + 42);
  29 }
  30