Program terminated with signal 6, Aborted.
#0  0x00007f7fd2f98c25 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:63
63	  return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) bt full
#0  0x00007f7fd2f98c25 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:63
        resultvar = 0
        pid = 9342
        selftid = 9342
#1  0x00007f7fd2f9a3d8 in __GI_abort () at abort.c:90
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7fff58bc0524, sa_sigaction = 0x7fff58bc0524}, sa_mask = {__val = {
              140186978467747, 140186947720851, 504, 140734682098320, 4294967296, 140734682098320, 11970095328676709376, 
              44054560, 4, 140734682096944, 0, 0, 0, 140186978467484, 140187012186112, 140186978481160}}, 
          sa_flags = -784819592, sa_restorer = 0x7f7fd1389ef0 <__PRETTY_FUNCTION__.19636>}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f7fd2f91a52 in __assert_fail_base (fmt=0x7f7fd30df408 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 
    assertion=assertion@entry=0x7f7fd1389a78 "damage->extents.x1 == region->extents.x1 && damage->extents.y1 == region->extents.y1 && damage->extents.x2 == region->extents.x2 && damage->extents.y2 == region->extents.y2", 
    file=file@entry=0x7f7fd1389693 "sna_damage.c", line=line@entry=504, 
    function=function@entry=0x7f7fd1389ef0 <__PRETTY_FUNCTION__.19636> "__sna_damage_reduce") at assert.c:92
        str = 0x2a0ac30 "`\255\240\002"
        total = 4096
#3  0x00007f7fd2f91b02 in __GI___assert_fail (
    assertion=assertion@entry=0x7f7fd1389a78 "damage->extents.x1 == region->extents.x1 && damage->extents.y1 == region->extents.y1 && damage->extents.x2 == region->extents.x2 && damage->extents.y2 == region->extents.y2", 
    file=file@entry=0x7f7fd1389693 "sna_damage.c", line=line@entry=504, 
    function=function@entry=0x7f7fd1389ef0 <__PRETTY_FUNCTION__.19636> "__sna_damage_reduce") at assert.c:101
No locals.
#4  0x00007f7fd12fb466 in __sna_damage_reduce (damage=damage@entry=0x2a037f0) at sna_damage.c:501
        n = 5
        nboxes = 7
        boxes = 0x2a03834
        free_boxes = 0x0
        region = 0x2a037f8
        iter = <optimized out>
        __PRETTY_FUNCTION__ = "__sna_damage_reduce"
#5  0x00007f7fd12fcacb in __sna_damage_contains_box (box=0x7fff58bbec40, damage=0x2a037f0) at sna_damage.c:1257
        ret = 2
#6  _sna_damage_contains_box (damage=0x2a037f0, box=box@entry=0x7fff58bbec40) at sna_damage.c:1272
        damage_buf = "[[(2, 44), (609, 887)]: [(584, 873), (609, 887) x 2: ((584, 873), (608, 874)), ((584, 874), (609, 887))] +[ ...]]*\000\000\000\000\000\000\360\352\273X\377\177\000\000\060^\225\002\000\000\000\000\020\060\004\325\177\177\000\000\000\000\000\000\000\000\000\000\204\244\063\321\177\177\000\000\020\000\000\000\000\000\000\000\006\000\000\000\177\177\000\000-\000\000\000\377\177\000\000\250\206w\002\000\000\000\000\000\355\273X\377\177\000\000P\253/\321\177\177\000\000\020\000\000\000\377\177", '\000' <repeats 11 times>"\355"...
        ret = 2
        __FUNCTION__ = "_sna_damage_contains_box"
#7  0x00007f7fd12edf60 in sna_damage_contains_box (box=0x7fff58bbec40, damage=<optimized out>) at sna_damage.h:217
No locals.
#8  sna_drawable_move_region_to_cpu (drawable=drawable@entry=0x27a4ca0, region=region@entry=0x7fff58bbec40, 
    flags=flags@entry=2) at sna_accel.c:1578
        pixmap = 0x27a4ca0
        sna = 0x7f7fd5043010
        priv = 0x2a15d60
        dx = <optimized out>
        dy = <optimized out>
        __PRETTY_FUNCTION__ = "sna_drawable_move_region_to_cpu"
#9  0x00007f7fd12f2c3e in sna_copy_area (src=0x27a4ca0, dst=0x2759ca0, gc=0x2789e10, src_x=6, src_y=44, width=602, 
    height=843, dst_x=0, dst_y=0) at sna_accel.c:4157
        region = {extents = {x1 = 6, y1 = 44, x2 = 608, y2 = 887}, data = 0x0}
        ret = 0x0
#10 0x0000000000504f0d in damageCopyArea (pSrc=0x27a4ca0, pDst=0x2759ca0, pGC=0x2789e10, srcx=6, srcy=<optimized out>, 
    width=602, height=843, dstx=0, dsty=0) at damage.c:824
        ret = <optimized out>
        pGCPriv = 0x2789ef0
        oldFuncs = 0x7cf980 <damageGCFuncs>
#11 0x00000000004304bb in ProcCopyArea (client=0x2707470) at dispatch.c:1623
        pDst = 0x2759ca0
        pSrc = 0x27a4ca0
        pGC = 0x2789e10
        stuff = 0x2a05884
        pRgn = <optimized out>
        rc = <optimized out>
#12 0x00000000004344aa in Dispatch () at dispatch.c:428
        clientReady = 0x16835a0
        result = <optimized out>
        client = 0x2707470
        nready = 0
        icheck = 0x7dea90 <checkForInput>
        start_tick = 1200
#13 0x0000000000423505 in main (argc=4, argv=0x7fff58bbef48, envp=<optimized out>) at main.c:288
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
(gdb) frame 4
#4  0x00007f7fd12fb466 in __sna_damage_reduce (damage=damage@entry=0x2a037f0) at sna_damage.c:501
501			assert(damage->extents.x1 == region->extents.x1 &&
(gdb) print *damage
$1 = {extents = {x1 = 2, y1 = 44, x2 = 609, y2 = 887}, region = {extents = {x1 = 6, y1 = 44, x2 = 609, y2 = 887}, 
    data = 0x2a00b20}, mode = DAMAGE_ADD, remain = 3, dirty = 1, box = 0x2a0385c, embedded_box = {list = {
      next = 0x2a03820, prev = 0x2a03820}, size = 8, box = {{x1 = 6, y1 = 44, x2 = 10, y2 = 48}, {x1 = 6, y1 = 44, 
        x2 = 250, y2 = 66}, {x1 = 6, y1 = 44, x2 = 250, y2 = 66}, {x1 = 6, y1 = 44, x2 = 22, y2 = 61}, {x1 = 6, y1 = 45, 
        x2 = 22, y2 = 61}, {x1 = 584, y1 = 873, x2 = 608, y2 = 874}, {x1 = 584, y1 = 874, x2 = 609, y2 = 887}, {x1 = 6, 
        y1 = 45, x2 = 22, y2 = 61}}}}
(gdb) print *region
$2 = {extents = {x1 = 6, y1 = 44, x2 = 609, y2 = 887}, data = 0x2a00b20}