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/* bug-2822.c
Overwritten register in call to __z88dk_fastcall function pointer in struct.
*/
#include <testfwk.h>
#include <stdint.h>
#ifndef __SDCC_pdk14 // Lack of memory
struct wibble
{
int (*wobble)(uint8_t *x) __z88dk_fastcall __reentrant;
} w;
struct wibble *wubble = &w;
uint8_t xp[4];
void foo(uint8_t minor)
{
uint8_t x;
uint8_t err;
uint8_t *bar = xp + minor;
for(x = 0; x < 4; x++) {
err = wubble->wobble(bar);
if (err)
wubble->wobble(bar);
}
}
uint8_t called;
int f(uint8_t *x) __z88dk_fastcall __reentrant
{
ASSERT(*x == 0x5a);
called++;
return(1);
}
struct wibble2
{
int (*wobble2)(uint32_t) __z88dk_fastcall __reentrant;
} w2;
struct wibble2 *wubble2 = &w2;
uint32_t xp2[4];
void foo2(uint8_t minor)
{
uint8_t x;
uint8_t err;
uint32_t *bar = xp2 + minor;
for(x = 0; x < 4; x++) {
err = wubble2->wobble2(*bar);
if (err)
wubble2->wobble2(*bar);
}
}
uint8_t called2;
int f2(uint32_t x) __z88dk_fastcall __reentrant
{
ASSERT(x == 0x1155aa88);
called2++;
return(1);
}
#endif
void testBug(void)
{
#ifndef __SDCC_pdk14 // Lack of memory
wubble->wobble = &f;
xp[1] = 0x5a;
foo(1);
ASSERT(called == 8);
wubble2->wobble2 = &f2;
xp2[1] = 0x1155aa88;
foo2(1);
ASSERT(called2 == 8);
#endif
}
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