From: Florian "sp1rit"​ <sp1ritCS@protonmail.com>
Date: Sun, 8 May 2022 13:53:41 +0000 (+0200)
Subject: gdk: gdkevents: added NULL check to `gdk_event_get_axes`
X-Git-Tag: archive/raspbian/4.12.3+ds-1+rpi1~1^2^2^2~22^2~9^2~39^2~3
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=c36685bf60f72b264f574a936255a9b5bd0966b0;p=gtk4.git

gdk: gdkevents: added NULL check to `gdk_event_get_axes`

this is to prevent gdk from causing a segfault, when getting event axes
for events that don't have them (i.e. attempting to get pressure from a
mice input device).
---

diff --git a/gdk/gdkevents.c b/gdk/gdkevents.c
index e63c54fcb4..6bb9c91a74 100644
--- a/gdk/gdkevents.c
+++ b/gdk/gdkevents.c
@@ -1174,9 +1174,16 @@ gdk_event_get_axes (GdkEvent  *event,
                     double   **axes,
                     guint     *n_axes)
 {
+  gboolean ret;
+
   g_return_val_if_fail (GDK_IS_EVENT (event), FALSE);
 
-  return GDK_EVENT_GET_CLASS (event)->get_axes (event, axes, n_axes);
+  ret = GDK_EVENT_GET_CLASS (event)->get_axes (event, axes, n_axes);
+
+  if (*axes == NULL)
+    return FALSE;
+
+  return ret;
 }
 
 double *