sdcc/support/regression/tests/bug1994062.c.in

   1 /** bug1994062.c
   2
   3     sign: signed, unsigned
   4  */
   5
   6 #include <testfwk.h>
   7
   8 /*
   9   8051 code miscompares idata char* pointers.
  10   It does signed compare instead of unsigned.
  11   And I offer an optimzation that can't be peepholed, at least not by me.
  12   2.7.0 and 2.8.0 are identical with respect to this bug. 2.8.0 generates a false warning from the linker.
  13
  14   Also for xdata it generates error 47: indirections to different types assignment
  15     from type 'unsigned-char near* '
  16     to type 'unsigned-char xdata* '
  17  */
  18
  19 {sign} char _STATMEM *one;
  20 {sign} char _STATMEM *two;
  21 {sign} char chunk[20];
  22
  23 void testBug(void)
  24 {
  25   one = chunk;
  26   two = &one[140];
  27   ASSERT (one < two);
  28 }