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-rw-r--r--X11/Xlibint.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/X11/Xlibint.h b/X11/Xlibint.h
index 78d459e6d..39ca4da03 100644
--- a/X11/Xlibint.h
+++ b/X11/Xlibint.h
@@ -899,7 +899,7 @@ extern int _XError(
);
extern int _XIOError(
Display* /* dpy */
-);
+) _X_NORETURN;
extern int (*_XIOErrorFunction)(
Display* /* dpy */
);