commit a2e5856f22739a9056fa41789369948450cd7e36
Author: Hiltjo Posthuma <[email protected]>
AuthorDate: Sat Jun 25 10:11:26 2022 +0200
Commit: Hiltjo Posthuma <[email protected]>
CommitDate: Sat Jun 25 10:11:26 2022 +0200
fix segfault after querying window with no children
Reported by Augusto Castelo <[email protected]>, thanks!
diff --git a/lsw.c b/lsw.c
index fc40fef..8b04ef2 100644
--- a/lsw.c
+++ b/lsw.c
@@ -36,7 +36,7 @@ lsw(Window win) {
Window *wins, *w, dw;
XWindowAttributes wa;
- if(!XQueryTree(dpy, win, &dw, &dw, &wins, &n))
+ if(!XQueryTree(dpy, win, &dw, &dw, &wins, &n) || !n)
return;
for(w = &wins[n-1]; w >= &wins[0]; w--)
if(XGetWindowAttributes(dpy, *w, &wa)
