(gdb) bt
#0  dri3_update_num_back (draw=draw@entry=0x106f478) at loader_dri3_helper.c:70
#1  0x00007f7e677695ec in dri3_handle_present_event (draw=draw@entry=0x106f478, ge=0x1206730) at loader_dri3_helper.c:243
#2  0x00007f7e6776979b in dri3_flush_present_events (draw=draw@entry=0x106f478) at loader_dri3_helper.c:622
#3  0x00007f7e6776a416 in dri3_flush_present_events (draw=0x106f478) at loader_dri3_helper.c:616
#4  dri3_update_drawable (driDrawable=0x7ffc594e8f60, draw=0x106f478) at loader_dri3_helper.c:1041
#5  loader_dri3_get_buffers (driDrawable=driDrawable@entry=0x106f570, format=4107, stamp=stamp@entry=0x106f5a0, 
    loaderPrivate=loaderPrivate@entry=0x106f478, buffer_mask=buffer_mask@entry=1, buffers=buffers@entry=0x7ffc594e8f60)
    at loader_dri3_helper.c:1344
#6  0x00007f7e644a121d in intel_update_image_buffers (drawable=0x106f570, brw=0x7f7e68c88038) at brw_context.c:1688
#7  intel_update_renderbuffers (context=context@entry=0x103f030, drawable=drawable@entry=0x106f570) at brw_context.c:1403
#8  0x00007f7e644a1581 in intel_prepare_render (brw=brw@entry=0x7f7e68c88038) at brw_context.c:1424
#9  0x00007f7e64493b80 in brw_clear (ctx=0x7f7e68c88038, mask=2) at brw_clear.c:232
#10 0x0000000000418087 in TestFramework::OnWindowDraw() ()
#11 0x0000000000499362 in AppWindowSys::MainLoop() ()
#12 0x000000000040b45f in main ()
(gdb) up
#1  0x00007f7e677695ec in dri3_handle_present_event (draw=draw@entry=0x106f478, ge=0x1206730) at loader_dri3_helper.c:243
243	in loader_dri3_helper.c
(gdb) info locals
ce = 0x1206730
(gdb) print *ce
$1 = {response_type = 35 '#', extension = 147 '\223', sequence = 1216, length = 2, event_type = 1, kind = 0 '\000', mode = 0 '\000', 
  event = 48234504, window = 48234498, serial = 1159, ust = 2545256192, full_sequence = 1216, msc = 146680}
(gdb) up
#2  0x00007f7e6776979b in dri3_flush_present_events (draw=draw@entry=0x106f478) at loader_dri3_helper.c:622
622	in loader_dri3_helper.c
(gdb) info locals
ge = <optimized out>
ev = <optimized out>
(gdb) up
#3  0x00007f7e6776a416 in dri3_flush_present_events (draw=0x106f478) at loader_dri3_helper.c:616
616	in loader_dri3_helper.c
(gdb) info locals
No locals.
(gdb) up
#4  dri3_update_drawable (driDrawable=0x7ffc594e8f60, draw=0x106f478) at loader_dri3_helper.c:1041
1041	in loader_dri3_helper.c
(gdb) info locals
No locals.
(gdb) up
#5  loader_dri3_get_buffers (driDrawable=driDrawable@entry=0x106f570, format=4107, stamp=stamp@entry=0x106f5a0, 
    loaderPrivate=loaderPrivate@entry=0x106f478, buffer_mask=buffer_mask@entry=1, buffers=buffers@entry=0x7ffc594e8f60)
    at loader_dri3_helper.c:1344
1344	in loader_dri3_helper.c
(gdb) info locals
draw = 0x106f478
front = 0x0
back = 0x0
(gdb) print *draw
$2 = {conn = 0xeff160, dri_drawable = 0x106f570, drawable = 48234498, width = 1920, height = 1080, depth = 24, have_back = 1 '\001', 
  have_fake_front = 0 '\000', is_pixmap = 0 '\000', flipping = 0 '\000', dri_screen = 0xf19ca0, is_different_gpu = false, 
  present_capabilities = 0, send_sbc = 1160, recv_sbc = 1159, ust = 2545256192, msc = 146680, notify_ust = 0, notify_msc = 0, 
  send_msc_serial = 0, recv_msc_serial = 0, buffers = {0x106fca0, 0x1073ff0, 0x0, 0x0, 0x0}, cur_back = 1, num_back = 2, 
  stamp = 0x106f5a0, eid = 48234504, gc = 0, special_event = 0x106fbb0, first_init = false, ext = 0xef4da8, 
  vtable = 0x7f7e6798c920 <glx_dri3_vtable>}
(gdb) up
#6  0x00007f7e644a121d in intel_update_image_buffers (drawable=0x106f570, brw=0x7f7e68c88038) at brw_context.c:1688
1688	brw_context.c: No such file or directory.
(gdb) info locals
fb = <optimized out>
screen = <optimized out>
images = {image_mask = 0, back = 0x0, front = 0x0}
buffer_mask = 1
ret = <optimized out>
format = <optimized out>