swc

commit 7426b13c6147d7994132798c0e27698c368d6d34
parent 4d1e769c95584823e6175a5836fec034f2132cd2
Author: Michael Forney <mforney@mforney.org>
Date:   Sat, 29 Nov 2014 11:20:28 -0800

pointer: Handle attach of NULL buffer

This prevents a crash when an application attaches a NULL cursor buffer.

Diffstat:
M
libswc/pointer.c
 | 
9
+++++++--

1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/libswc/pointer.c b/libswc/pointer.c
@@ -83,8 +83,13 @@ static int attach(struct view * view, struct wld_buffer * buffer)
 
     wld_set_target_buffer(swc.shm->renderer, pointer->cursor.buffer);
     wld_fill_rectangle(swc.shm->renderer, 0x00000000, 0, 0, 64, 64);
-    wld_copy_rectangle(swc.shm->renderer, buffer, 0, 0, 0, 0,
-                       buffer->width, buffer->height);
+
+    if (buffer)
+    {
+        wld_copy_rectangle(swc.shm->renderer, buffer, 0, 0, 0, 0,
+                           buffer->width, buffer->height);
+    }
+
     wld_flush(swc.shm->renderer);
 
     if (surface)