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/*
bug-3283.c. On z80, a variable allocated to iy was overwritten by the use of iy for an address at a cast.
*/
#include <testfwk.h>
#pragma disable_warning 85
typedef struct object_d {
unsigned char code;
char *desc;
unsigned int position;
unsigned char attributes;
} object;
object *odummy;
unsigned char current_position;
char *message1006;
char *message1005;
extern object *search_object_p(unsigned int o);
extern void show_message(const char *m);
unsigned char get(unsigned int o)
{
odummy=search_object_p(o); // odummy in iy.
if(odummy->position!=current_position) { // a cast from unsigned char to unsigned int here used iy to point to current_position.
show_message(message1006);
} else if((odummy->attributes&1)==0) {
show_message(message1005);
} else {
odummy->position=1500; // odummy used again here.
return 0;
}
return 1;
}
object obj = {0, 0, 0, 1};
void
testBug (void)
{
ASSERT(!get(0));
ASSERT(obj.position==1500);
}
object *search_object_p(unsigned int o)
{
return &obj;
}
void show_message(const char *m)
{
ASSERT (0);
}
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