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win: add assert to catch duplicated windows 

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>
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Yuxuan Shui 2019-04-19 01:49:34 +01:00
parent 452e313c64
commit 0c992b11d3
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1 changed files with 4 additions and 0 deletions
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src/win.c
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@ -947,6 +947,10 @@ void free_win_res(session_t *ps, struct managed_win *w) {
/// Insert a new window after list_node `prev`
/// New window will be in unmapped state
static struct win *add_win(session_t *ps, xcb_window_t id, struct list_node *prev) {
struct win *old_w = NULL;
HASH_FIND_INT(ps->windows, &id, old_w);
assert(old_w == NULL);
auto new_w = cmalloc(struct win);
list_insert_after(prev, &new_w->stack_neighbour);
new_w->id = id;