mirror of
https://github.com/TinyCC/tinycc.git
synced 2025-12-27 01:28:48 +00:00
0c12363fd3
In gfunc_call(), structure members are loaded into registers during argument handling. This operation may overwrite previous function call results stored in registers (e.g., s0). To prevent this, we must save function call results to the stack before processing structure arguments.
24 lines
396 B
C
24 lines
396 B
C
#include <stdio.h>
|
|
|
|
// arm64-gen.c: gfunc_call() Second pass when struct args may overwrite previous func call result
|
|
struct vec {
|
|
float x;
|
|
float y;
|
|
};
|
|
|
|
void bug(float x, float y) {
|
|
printf("x=%f\ny=%f\n", x, y);
|
|
}
|
|
|
|
float dot(struct vec v) {
|
|
return 999.5;
|
|
}
|
|
|
|
void main(void) {
|
|
struct vec a;
|
|
a.x = 33.0f;
|
|
a.y = 77.0f;
|
|
bug(dot(a), dot(a));
|
|
}
|
|
|