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Running the command:

../swift -e -s -G -t 4 -n 1024 eagle_12.yml

configured with the options:

--with-metis --enable-debugging-checks --enable-debug

and the current master (34ee8e01), crashes with the following output:

#   Step           Time      Time-step    Updates  g-Updates  s-Updates  Wall-clock time [ms]
       0   0.000000e+00   0.000000e+00    6387423   13032095          0            248405.984
[00268.5] space_rebuild: (re)building space
[00269.8] space_parts_sort: Sorting succeeded.
[00270.2] space_gparts_sort: Sorting succeeded.
[00273.2] runner_doiact_grav.h:runner_dopair_grav_pp():444: Un-drifted gparts
Abort (core dumped)
with a bt:
(gdb) bt
#0  0x000000345f0325e5 in raise () from /lib64/libc.so.6
#1  0x000000345f033dc5 in abort () from /lib64/libc.so.6
#2  0x0000000000488df7 in runner_dopair_grav_pp (r=0xa2a270, ci=0x5896080, cj=0x582a080) at runner_doiact_grav.h:445
#3  0x000000000048b8da in runner_dopair_grav (r=0xa2a270, ci=0x5896080, cj=0x582bb80, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1050
#4  0x000000000048b7ce in runner_dopair_grav (r=0xa2a270, ci=0x5897b80, cj=0x582bb80, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1059
#5  0x000000000048b8a6 in runner_dopair_grav (r=0xa2a270, ci=0x5897b80, cj=0x585b580, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1050
#6  0x000000000048b762 in runner_dopair_grav (r=0xa2a270, ci=0x5899380, cj=0x585b580, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1059
#7  0x000000000048b8f4 in runner_dopair_grav (r=0xa2a270, ci=0x5899380, cj=0x5877a80, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1050
#8  0x000000000048b886 in runner_dopair_grav (r=0xa2a270, ci=0x5899380, cj=0x2aab7918f600, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1050
#9  0x000000000048be93 in runner_dopair_grav (r=0xa2a270, c=0x2aab79204000, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1059
#10 runner_doself_grav (r=0xa2a270, c=0x2aab79204000, gettimer=Unhandled dwarf expression opcode 0xf3
) at runner_doiact_grav.h:1107
#11 0x0000000000495a00 in runner_main (data=0xa2a270) at runner.c:1873
#12 0x000000345f407aa1 in start_thread () from /lib64/libpthread.so.0