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Check if the index is in use and fail before creating the child process,

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rather than leaving a stray child on failure.
This commit is contained in:
Nicholas Marriott
2011-01-25 22:31:50 +00:00
parent 1df3355438
commit 1270f8fed8
3 changed files with 34 additions and 13 deletions
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24
window.c
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@ -123,7 +123,7 @@ winlink_count(struct winlinks *wwl)
}
struct winlink *
winlink_add(struct winlinks *wwl, struct window *w, int idx)
winlink_add(struct winlinks *wwl, int idx)
{
struct winlink *wl;
@ -135,14 +135,18 @@ winlink_add(struct winlinks *wwl, struct window *w, int idx)
wl = xcalloc(1, sizeof *wl);
wl->idx = idx;
wl->window = w;
RB_INSERT(winlinks, wwl, wl);
w->references++;
return (wl);
}
void
winlink_set_window(struct winlink *wl, struct window *w)
{
wl->window = w;
w->references++;
}
void
winlink_remove(struct winlinks *wwl, struct winlink *wl)
{
@ -153,11 +157,13 @@ winlink_remove(struct winlinks *wwl, struct winlink *wl)
xfree(wl->status_text);
xfree(wl);
if (w->references == 0)
fatal("bad reference count");
w->references--;
if (w->references == 0)
window_destroy(w);
if (w != NULL) {
if (w->references == 0)
fatal("bad reference count");
w->references--;
if (w->references == 0)
window_destroy(w);
}
}
struct winlink *