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egl/x11: check the return value of xcb_dri2_get_buffers_reply()

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... before using it. The function can return NULL, which we should check
prior to refererencing it in the next function(s).

Cc: Fabian Vogt <fvogt@suse.com>
Cc: "11.1 11.2" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93667
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Eduardo Lima Mitev <elima@igalia.com>
This commit is contained in:
Emil Velikov 2016-03-05 21:25:44 +00:00
parent 373f118c6c
commit b9c5c4af6d
1 changed files with 3 additions and 0 deletions
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3
src/egl/drivers/dri2/platform_x11.c
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@ -1006,6 +1006,9 @@ dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
buffers_cookie, NULL);
if (buffers_reply == NULL)
return NULL;
buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
if (buffers == NULL) {
return NULL;