gEDA-user: PCB invalid free with latest git

[Russell Dill <Russ.Dill@xxxxxxx>]

I was selecting a net when PCB crashed.

82721122dae63a96c89d273bba7abd8b3e6e8337

*** glibc detected *** /home/russ/src/pcb/_install/usr/bin/pcb:
free(): invalid next size (fast): 0x00000000027f4d60 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x78a8f)[0x7f8d5f0a8a8f]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x73)[0x7f8d5f0ac8e3]
/home/russ/src/pcb/_install/usr/bin/pcb(FreeLayoutLookupMemory+0xa2)[0x458c12]
/home/russ/src/pcb/_install/usr/bin/pcb(LookupConnection+0x164)[0x45ec04]
/home/russ/src/pcb/_install/usr/bin/pcb[0x429ed2]
/home/russ/src/pcb/_install/usr/bin/pcb(hid_actionv+0xb4)[0x497694]
/home/russ/src/pcb/_install/usr/bin/pcb[0x497a44]
/home/russ/src/pcb/_install/usr/bin/pcb[0x4c9309]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x154)[0x7f8d5ff4fd54]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x20bbb)[0x7f8d5ff61bbb]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x767)[0x7f8d5ff6b1c7]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x82)[0x7f8d5ff6b392]
/usr/lib/libgtk-x11-2.0.so.0(+0x75163)[0x7f8d606d9163]
/usr/lib/libgtk-x11-2.0.so.0(+0x75a09)[0x7f8d606d9a09]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x154)[0x7f8d5ff4fd54]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x20bbb)[0x7f8d5ff61bbb]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x5f6)[0x7f8d5ff6b056]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x82)[0x7f8d5ff6b392]
/usr/lib/libgtk-x11-2.0.so.0(gtk_accel_group_activate+0x104)[0x7f8d606d4354]
/usr/lib/libgtk-x11-2.0.so.0(gtk_accel_groups_activate+0x109)[0x7f8d606d56f9]
/usr/lib/libgtk-x11-2.0.so.0(gtk_window_activate_key+0x19c)[0x7f8d608ce23c]
/usr/lib/libgtk-x11-2.0.so.0(+0x26a2a9)[0x7f8d608ce2a9]
/usr/lib/libgtk-x11-2.0.so.0(+0x137848)[0x7f8d6079b848]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_closure_invoke+0x154)[0x7f8d5ff4fd54]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(+0x209f4)[0x7f8d5ff619f4]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit_valist+0x5f6)[0x7f8d5ff6b056]
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0(g_signal_emit+0x82)[0x7f8d5ff6b392]
/usr/lib/libgtk-x11-2.0.so.0(+0x251f61)[0x7f8d608b5f61]
/usr/lib/libgtk-x11-2.0.so.0(gtk_propagate_event+0x197)[0x7f8d60799b17]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main_do_event+0x283)[0x7f8d60799da3]
/usr/lib/libgdk-x11-2.0.so.0(+0x5c09c)[0x7f8d6040e09c]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x1dd)[0x7f8d60ce385d]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x44058)[0x7f8d60ce4058]
/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_loop_run+0x162)[0x7f8d60ce4592]
/usr/lib/libgtk-x11-2.0.so.0(gtk_main+0xa7)[0x7f8d60798dd7]
/home/russ/src/pcb/_install/usr/bin/pcb(ghid_do_export+0x4e)[0x4cbd3e]
/home/russ/src/pcb/_install/usr/bin/pcb(main+0x88a)[0x4241ba]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xff)[0x7f8d5f04ee1f]
/home/russ/src/pcb/_install/usr/bin/pcb[0x4246a9]


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