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 #11020)
diff --git a/src/gui_x11.c b/src/gui_x11.c
index 6e3e903..7293ac4 100644
--- a/src/gui_x11.c
+++ b/src/gui_x11.c
@@ -2231,10 +2231,14 @@
{
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);
}
/*