Program received signal SIGSEGV, Segmentation fault. 0xb530cdb0 in mcsync_atomic_compare_exchange (ptr=0x0, compare=0, exchange=1) at utils/mcsync.c:29 29 return __atomic_compare_exchange_n(ptr, &compare, exchange, 0, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST); (gdb) bt full #0 0xb530cdb0 in mcsync_atomic_compare_exchange (ptr=0x0, compare=0, exchange=1) at utils/mcsync.c:29 No locals. #1 0xb530ce55 in mcsync_lock (mcsync=0x0) at utils/mcsync.c:102 No locals. #2 0xb530ca22 in mcobject_async_node_delete (mcobj_async=0xa2e6bf0, node_idx=0) at utils/mcobject_async.c:336 node = 0x1 chunk = 0xb52f51dc #3 0xb52f8942 in myhtml_tag_index_destroy (tags=0xb44e160, index_tags=0xb43f550) at tag.c:104 No locals. #4 0xb52f4538 in myhtml_tree_index_destroy (tree=0xb3a0868, tags=0xb44e160) at tree.c:312 No locals. #5 0xb52f431f in myhtml_tree_destroy (tree=0xb3a0868) at tree.c:258 No locals. #6 0xb7db70c3 in dcCall_x86_cdecl () from /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so No symbol table info available. #7 0xb7db6a6a in dc_callvm_call_x86_cdecl () from /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so No symbol table info available. #8 0xb7db672a in dcCallPointer () from /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so No symbol table info available. #9 0xb7d0ed94 in MVM_nativecall_invoke () from /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so No symbol table info available. #10 0xb7cf1598 in MVM_interp_run () from /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so No symbol table info available. #11 0xb7db3b0d in MVM_vm_run_file () from /home/cbwood/.rakudobrew/moar-nom/install/lib/libmoar.so No symbol table info available. #12 0x08048c53 in main ()