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[client] x11: check if the EWMH atoms exist before using them

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This commit is contained in:
Geoffrey McRae 2022-02-10 13:35:19 +11:00
parent e96311eb7b
commit cfd2e6ff32
1 changed files with 4 additions and 0 deletions
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4
client/displayservers/X11/x11.c
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@ -195,6 +195,10 @@ static void x11CheckEWMHSupport(void)
Window * windowFromRoot = (Window *)data;
if (!x11atoms._NET_SUPPORTING_WM_CHECK || !x11atoms._NET_SUPPORTED ||
!x11atoms._NET_WM_NAME)
goto out_root;
if (XGetWindowProperty(x11.display, *windowFromRoot,
x11atoms._NET_SUPPORTING_WM_CHECK, 0, ~0L, False, XA_WINDOW,
&type, &fmt, &num, &bytes, &data) != Success)