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kernels,demo,life: fix stack overflow in nemu

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* allocate arrays with malloc()
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gftytkklt 2023-10-09 10:44:01 +08:00 committed by Zihao Yu
parent 773fa2b997
commit 0c1f038ad0
1 changed files with 6 additions and 2 deletions
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8
kernels/demo/src/life/life.c
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@ -5,6 +5,8 @@
#include <io.h> #include <io.h>
static int w = 40, h = 25; static int w = 40, h = 25;
static unsigned *new_array = NULL;
static unsigned *univ_array = NULL;
void show(void *u) { void show(void *u) {
int x,y; int x,y;
@ -20,7 +22,7 @@ void show(void *u) {
void evolve(void *u) { void evolve(void *u) {
int x,y,x1,y1; int x,y,x1,y1;
unsigned (*univ)[w] = u; unsigned (*univ)[w] = u;
unsigned new[h][w]; unsigned (*new)[w] = (void *)new_array;
for (y=0;y<h;y++) for (x=0;x<w;x++) { for (y=0;y<h;y++) for (x=0;x<w;x++) {
int n = 0; int n = 0;
@ -38,9 +40,11 @@ void evolve(void *u) {
void game_of_life(void) { void game_of_life(void) {
w = screen_tile_width(); w = screen_tile_width();
h = screen_tile_height(); h = screen_tile_height();
univ_array = malloc(h * w * sizeof(unsigned));
new_array = malloc(h * w * sizeof(unsigned));
unsigned (*univ)[w] = (void *)univ_array;
int x,y; int x,y;
unsigned univ[h][w];
for (x=0;x<w;x++) for (x=0;x<w;x++)
for (y=0;y<h;y++) for (y=0;y<h;y++)
univ[y][x] = rand() % 2; univ[y][x] = rand() % 2;