1 files changed, 2 insertions, 2 deletions
diff --git a/map.c b/map.c
index 735a00c..2bf3ab0 100644
--- a/map.c
+++ b/map.c
@@ -123,7 +123,7 @@ Map rbt_maze_map(size_t width, size_t height, unsigned int seed) {
     memset(visited, 0, sizeof(char) * width * height);
 
     PositionStack ps = ps_new();
-    ps_push(&ps, beginning_cell);
+    if (ps_push(&ps, beginning_cell) == -1) error("Is the STACK_SIZE zero?");
     visited[beginning_cell.y][beginning_cell.x] = 1;
 
     Position na[4];
@@ -135,7 +135,7 @@ Map rbt_maze_map(size_t width, size_t height, unsigned int seed) {
         if (nc > 0) {
             Position next = na[rand() % nc];
             Position prev = ps_peek(ps);
-            ps_push(&ps, next);
+            if (ps_push(&ps, next) == -1) error("Stack overflow in rbt_maze_map(). Recompile with bigger STACK_SIZE or decrease the map size\n");
             visited[next.y][next.x] = 1;
             map[(next.y * 2 + prev.y * 2) / 2][(next.x * 2 + prev.x * 2) / 2] = EMPTY;
         } else {