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/** bug-3779.c: code generation for z80 affecting the passing of struct members of the same global as subsequent paramters
*/
#include <testfwk.h>
struct s
{
unsigned char c[4];
};
struct s a[3];
void f(struct s s0, struct s s1, struct s s2)
{
ASSERT(s0.c[0] == 0xa5);
ASSERT(s0.c[1] == 0x00);
ASSERT(s1.c[0] == 0x5a);
ASSERT(s1.c[1] == 0x00);
ASSERT(s2.c[0] == 0xaa);
ASSERT(s2.c[1] == 0x55);
}
void testBug(void)
{
a[0].c[0] = 0xa5;
a[1].c[0] = 0x5a;
a[2].c[0] = 0xaa;
a[2].c[1] = 0x55;
f(a[0], a[1], a[2]); // When passing the second, the cached value for the hl register was wrong, resulting in the passed data being read at an off-by-one-byte location from a[1].
}
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