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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [clover] OpenCL segfault in gegl 'clones' test"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=73571#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [clover] OpenCL segfault in gegl 'clones' test"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=73571">bug 73571</a>
              from <span class="vcard"><a class="email" href="mailto:jano.vesely@gmail.com" title="Jan Vesely <jano.vesely@gmail.com>"> <span class="fn">Jan Vesely</span></a>
</span></b>
        <pre>I should have noted that my llvm git includes
<a href="http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20131216/199497.html">http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20131216/199497.html</a>.

Without these patches the backtrace in clones.xml test looks like this:
Program received signal SIGSEGV, Segmentation fault.
0x00007fffee163705 in clover::kernel::global_argument::set (this=0xfee690, 
    size=8, value=0x0) at core/kernel.cpp:330
330       buf = &obj<buffer>(*(cl_mem *)value);
(gdb) bt
#0  0x00007fffee163705 in clover::kernel::global_argument::set (this=0xfee690, 
    size=8, value=0x0) at core/kernel.cpp:330
#1  0x00007fffee1af9d6 in clSetKernelArg (d_kern=0x115e658, idx=1, size=8, 
    value=0x0) at api/kernel.cpp:98
#2  0x00007ffff7db32c2 in gegl_operation_point_composer_cl_process (level=0, 
    result=0xc7f1d0, output=0x106b4b0, aux=0x0, input=0xe152f0, 
    operation=0x9dd010) at gegl-operation-point-composer.c:195
#3  gegl_operation_point_composer_process (operation=0x9dd010, input=0xe152f0, 
    aux=0x0, output=0x106b4b0, result=0xc7f1d0, level=0)
    at gegl-operation-point-composer.c:246
#4  0x00007ffff7db2bc4 in gegl_operation_composer_process2 (
    operation=0x9dd010, context=<optimized out>, output_prop=<optimized out>, 
    result=0xc7f1d0, level=0) at gegl-operation-point-composer.c:117
#5  0x00007ffff7dbbe46 in gegl_graph_process (path=0xcc1020)
    at gegl-graph-traversal.c:418
#6  0x00007ffff7dbb268 in gegl_eval_manager_apply (self=self@entry=0x81df40, 
    roi=roi@entry=0xb89140) at gegl-eval-manager.c:133
#7  0x00007ffff7db67ed in gegl_node_apply_roi (self=self@entry=0xf8d030, 
    roi=roi@entry=0xb89140) at gegl-node.c:887
#8  0x00007ffff7db6c53 in gegl_node_blit (self=0xf8d030, scale=scale@entry=1, 
    roi=roi@entry=0xb89140, format=0x63ee60, 
    destination_buf=destination_buf@entry=0x1284530, 
    rowstride=rowstride@entry=0, flags=flags@entry=GEGL_BLIT_DEFAULT)
---Type <return> to continue, or q <return> to quit---
    at gegl-node.c:948
#9  0x00007ffff7dbd0be in render_rectangle (processor=0xd7a560)
    at gegl-processor.c:502
#10 gegl_processor_render (progress=0x0, rectangle=0xd7a580, 
    processor=0xd7a560) at gegl-processor.c:642
#11 gegl_processor_work (processor=processor@entry=0xd7a560, 
    progress=progress@entry=0x0) at gegl-processor.c:777
#12 0x00007ffff7db68b2 in gegl_node_process (self=<optimized out>)
    at gegl-node.c:1610
#13 0x0000000000401d27 in main (argc=6, argv=0x7fffffffe008) at gegl.c:232</pre>
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