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-rw-r--r--libX11/include/X11/Xlibint.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libX11/include/X11/Xlibint.h b/libX11/include/X11/Xlibint.h
index ef2ccd109..8a06f6d6a 100644
--- a/libX11/include/X11/Xlibint.h
+++ b/libX11/include/X11/Xlibint.h
@@ -626,7 +626,7 @@ extern void _XFlushGCCache(Display *dpy, GC gc);
if (dpy->bufptr + (n) > dpy->bufmax) \
_XFlush (dpy); \
ptr = (type) dpy->bufptr; \
- (void)ptr; \
+ memset(ptr, '\0', n); \
dpy->bufptr += (n);
#ifdef WORD64