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fix segfault after querying window with no children - lsw - lists window titles… |
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git clone git://git.suckless.org/lsw |
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commit a2e5856f22739a9056fa41789369948450cd7e36 |
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parent 4d6e1b39e14666dd0738301fa0ac1ab246ac1070 |
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Author: Hiltjo Posthuma <[email protected]> |
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Date: Sat, 25 Jun 2022 10:11:26 +0200 |
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fix segfault after querying window with no children |
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Reported by Augusto Castelo <[email protected]>, thanks! |
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Diffstat: |
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M lsw.c | 2 +- |
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1 file changed, 1 insertion(+), 1 deletion(-) |
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--- |
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diff --git a/lsw.c b/lsw.c |
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@@ -36,7 +36,7 @@ lsw(Window win) { |
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Window *wins, *w, dw; |
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XWindowAttributes wa; |
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- if(!XQueryTree(dpy, win, &dw, &dw, &wins, &n)) |
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+ if(!XQueryTree(dpy, win, &dw, &dw, &wins, &n) || !n) |
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return; |
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for(w = &wins[n-1]; w >= &wins[0]; w--) |
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if(XGetWindowAttributes(dpy, *w, &wa) |
