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diff src/gui_x11.c @ 30003:01087b4630da v9.0.0339

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patch 9.0.0339: no check if the return value of XChangeGC() is NULL Commit: https://github.com/vim/vim/commit/a63ad78ed31e36dbdf3a9cd28071dcdbefce7d19 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 31 12:01:54 2022 +0100 patch 9.0.0339: no check if the return value of XChangeGC() is NULL Problem: No check if the return value of XChangeGC() is NULL. Solution: Only use the return value when it is not NULL. (closes https://github.com/vim/vim/issues/11020)
author Bram Moolenaar <Bram@vim.org>
date Wed, 31 Aug 2022 13:15:02 +0200
parents 9849df834f1d
children 029c59bf78f1
line wrap: on
line diff
--- a/src/gui_x11.c
+++ b/src/gui_x11.c
@@ -2231,10 +2231,14 @@ gui_x11_create_blank_mouse(void)
 {
     Pixmap blank_pixmap = XCreatePixmap(gui.dpy, gui.wid, 1, 1, 1);
     GC gc = XCreateGC(gui.dpy, blank_pixmap, (unsigned long)0, (XGCValues*)0);
-    XDrawPoint(gui.dpy, blank_pixmap, gc, 0, 0);
-    XFreeGC(gui.dpy, gc);
+
+    if (gc != NULL)
+    {
+	XDrawPoint(gui.dpy, blank_pixmap, gc, 0, 0);
+	XFreeGC(gui.dpy, gc);
+    }
     return XCreatePixmapCursor(gui.dpy, blank_pixmap, blank_pixmap,
-	    (XColor*)&gui.norm_pixel, (XColor*)&gui.norm_pixel, 0, 0);
+		     (XColor*)&gui.norm_pixel, (XColor*)&gui.norm_pixel, 0, 0);
 }
 
 /*