Check that the return value from xcb_dri2_swap_buffers_reply is
non-NULL before accessing the struct members.
---
src/glx/dri2_glx.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/glx/dri2_glx.c b/src/glx/dri2_glx.c
index a51716f..78a2a42 100644
--- a/src/glx/dri2_glx.c
+++ b/src/glx/dri2_glx.c
@@ -789,9 +789,11 @@ dri2XcbSwapBuffers(Display *dpy,
swap_buffers_reply =
xcb_dri2_swap_buffers_reply(c, swap_buffers_cookie, NULL);
- ret = merge_counter(swap_buffers_reply->swap_hi,
- swap_buffers_reply->swap_lo);
- free(swap_buffers_reply);
+ if (swap_buffers_reply) {
+ ret = merge_counter(swap_buffers_reply->swap_hi,
+ swap_buffers_reply->swap_lo);
+ free(swap_buffers_reply);
+ }
return ret;
}
--
1.8.1
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