 ~/gnome/gvfs:master $% u= $ valgrind --track-origins=yes gio list localtest:///
==16979== Memcheck, a memory error detector
==16979== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==16979== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==16979== Command: gio list localtest:///
==16979== 
--16979-- WARNING: Serious error when reading debug info
--16979-- When reading debug info from /usr/lib64/gio/modules/libgvfsdbus.so:
--16979-- get_Form_contents: DW_FORM_GNU_strp_alt used, but no alternate .debug_str
--16979-- WARNING: Serious error when reading debug info
--16979-- When reading debug info from /usr/lib64/gvfs/libgvfscommon.so:
--16979-- get_Form_contents: DW_FORM_GNU_strp_alt used, but no alternate .debug_str
==16979== Invalid read of size 8
==16979==    at 0x521A1D7: g_type_check_instance_is_fundamentally_a (gtype.c:4023)
==16979==    by 0x51F83D4: g_object_unref (gobject.c:3211)
==16979==    by 0x6134FA7: g_source_callback_unref (gmain.c:1566)
==16979==    by 0x61367F3: g_source_destroy_internal (gmain.c:1255)
==16979==    by 0x613862F: g_main_dispatch (gmain.c:3172)
==16979==    by 0x613862F: g_main_context_dispatch (gmain.c:3813)
==16979==    by 0x6138927: g_main_context_iterate.isra.25 (gmain.c:3886)
==16979==    by 0x6138C41: g_main_loop_run (gmain.c:4082)
==16979==    by 0xE5CF5D3: g_daemon_file_enumerator_next_file (gdaemonfileenumerator.c:530)
==16979==    by 0x4E8FFD4: g_file_enumerator_next_file (gfileenumerator.c:236)
==16979==    by 0x10F8FE: list (gio-tool-list.c:129)
==16979==    by 0x10FD46: handle_list (gio-tool-list.c:212)
==16979==    by 0x6ABD0E9: (below main) (in /usr/lib64/libc-2.25.90.so)
==16979==  Address 0x7829340 is 0 bytes inside a block of size 104 free'd
==16979==    at 0x4C30D18: free (vg_replace_malloc.c:530)
==16979==    by 0x613DE8D: g_free (gmem.c:189)
==16979==    by 0x6155EFF: g_slice_free1 (gslice.c:1136)
==16979==    by 0x5218F77: g_type_free_instance (gtype.c:1943)
==16979==    by 0x521CE9F: g_value_unset (gvalue.c:275)
==16979==    by 0xE80F62B: _gvfs_dbus_enumerator_skeleton_handle_method_call (gvfsdbus.c:16298)
==16979==    by 0x4F16556: g_dbus_interface_method_dispatch_helper (gdbusinterfaceskeleton.c:609)
==16979==    by 0x4EFE108: call_in_idle_cb (gdbusconnection.c:4851)
==16979==    by 0x6134F66: g_idle_dispatch (gmain.c:5500)
==16979==    by 0x6138586: g_main_dispatch (gmain.c:3148)
==16979==    by 0x6138586: g_main_context_dispatch (gmain.c:3813)
==16979==    by 0x6138927: g_main_context_iterate.isra.25 (gmain.c:3886)
==16979==    by 0x6138C41: g_main_loop_run (gmain.c:4082)
==16979==  Block was alloc'd at
==16979==    at 0x4C2FB6B: malloc (vg_replace_malloc.c:299)
==16979==    by 0x613DD78: g_malloc (gmem.c:94)
==16979==    by 0x6155985: g_slice_alloc (gslice.c:1025)
==16979==    by 0x6155E18: g_slice_alloc0 (gslice.c:1051)
==16979==    by 0x5218B55: g_type_create_instance (gtype.c:1848)
==16979==    by 0x51F8B87: g_object_new_internal (gobject.c:1781)
==16979==    by 0x51FA664: g_object_new_with_properties (gobject.c:1949)
==16979==    by 0x51FB0E0: g_object_new (gobject.c:1621)
==16979==    by 0x4F13A73: _g_dbus_method_invocation_new (gdbusmethodinvocation.c:369)
==16979==    by 0x4EF9DE6: schedule_method_call.isra.4 (gdbusconnection.c:4881)
==16979==    by 0x4EFADD4: validate_and_maybe_schedule_method_call (gdbusconnection.c:4983)
==16979==    by 0x4EFBCE6: obj_message_func (gdbusconnection.c:5025)
==16979==    by 0x4EFBCE6: distribute_method_call (gdbusconnection.c:7068)
==16979==    by 0x4EFBCE6: on_worker_message_received (gdbusconnection.c:2305)
==16979== 
==16979== Invalid read of size 8
==16979==    at 0x521A1DF: g_type_check_instance_is_fundamentally_a (gtype.c:4025)
==16979==    by 0x51F83D4: g_object_unref (gobject.c:3211)
==16979==    by 0x6134FA7: g_source_callback_unref (gmain.c:1566)
==16979==    by 0x61367F3: g_source_destroy_internal (gmain.c:1255)
==16979==    by 0x613862F: g_main_dispatch (gmain.c:3172)
==16979==    by 0x613862F: g_main_context_dispatch (gmain.c:3813)
==16979==    by 0x6138927: g_main_context_iterate.isra.25 (gmain.c:3886)
==16979==    by 0x6138C41: g_main_loop_run (gmain.c:4082)
==16979==    by 0xE5CF5D3: g_daemon_file_enumerator_next_file (gdaemonfileenumerator.c:530)
==16979==    by 0x4E8FFD4: g_file_enumerator_next_file (gfileenumerator.c:236)
==16979==    by 0x10F8FE: list (gio-tool-list.c:129)
==16979==    by 0x10FD46: handle_list (gio-tool-list.c:212)
==16979==    by 0x6ABD0E9: (below main) (in /usr/lib64/libc-2.25.90.so)
==16979==  Address 0xaaaaaaaaaaaaaaaa is not stack'd, malloc'd or (recently) free'd
==16979== 
==16979== 
==16979== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==16979==  General Protection Fault
==16979==    at 0x521A1DF: g_type_check_instance_is_fundamentally_a (gtype.c:4025)
==16979==    by 0x51F83D4: g_object_unref (gobject.c:3211)
==16979==    by 0x6134FA7: g_source_callback_unref (gmain.c:1566)
==16979==    by 0x61367F3: g_source_destroy_internal (gmain.c:1255)
==16979==    by 0x613862F: g_main_dispatch (gmain.c:3172)
==16979==    by 0x613862F: g_main_context_dispatch (gmain.c:3813)
==16979==    by 0x6138927: g_main_context_iterate.isra.25 (gmain.c:3886)
==16979==    by 0x6138C41: g_main_loop_run (gmain.c:4082)
==16979==    by 0xE5CF5D3: g_daemon_file_enumerator_next_file (gdaemonfileenumerator.c:530)
==16979==    by 0x4E8FFD4: g_file_enumerator_next_file (gfileenumerator.c:236)
==16979==    by 0x10F8FE: list (gio-tool-list.c:129)
==16979==    by 0x10FD46: handle_list (gio-tool-list.c:212)
==16979==    by 0x6ABD0E9: (below main) (in /usr/lib64/libc-2.25.90.so)
==16979== 
==16979== HEAP SUMMARY:
==16979==     in use at exit: 211,769 bytes in 2,889 blocks
==16979==   total heap usage: 11,776 allocs, 8,887 frees, 575,669 bytes allocated
==16979== 
==16979== LEAK SUMMARY:
==16979==    definitely lost: 0 bytes in 0 blocks
==16979==    indirectly lost: 0 bytes in 0 blocks
==16979==      possibly lost: 2,608 bytes in 26 blocks
==16979==    still reachable: 191,793 bytes in 2,714 blocks
==16979==                       of which reachable via heuristic:
==16979==                         length64           : 2,456 bytes in 44 blocks
==16979==                         newarray           : 1,888 bytes in 38 blocks
==16979==         suppressed: 0 bytes in 0 blocks
==16979== Rerun with --leak-check=full to see details of leaked memory
==16979== 
==16979== For counts of detected and suppressed errors, rerun with: -v
==16979== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)
Segmentation fault (core dumped)