Crash in glue_take

[kvark]

Rust pre-0.9, ff578b7

Stack trace:

0x000000000040b69d in _$SP$u32::glue_take::ha9528aac1c857124aO ()
(gdb) bt
#0  0x000000000040b69d in _$SP$u32::glue_take::ha9528aac1c857124aO ()
#1  0x000000000043052a in battle..field..Limb::glue_take::h5e862c1d6a396a51ai ()
#2  0x000000000047cf21 in battle::field::Field::add_member_cells::h935ad8c60ad79045Qqao::v0.1 ()
#3  0x000000000047ef00 in battle::field::Field::add_member::hb5749aaf06ee2155Qqat::v0.1 ()
#4  0x0000000000496f34 in battle::main::Character::spawn::h82e7505c73a0d5dd4Oa6::v0.1 ()
#5  0x000000000040e640 in battle::main::Scene::reset::hd626571ec021c730rjax::v0.1 ()
#6  0x000000000040e56e in logic::Logic::reset::h81282f80bcbe4f5bJXaw::v0.1 ()
#7  0x000000000043ba0e in main::Game::create::hb678078392e73f06vka2::v0.1 ()
#8  0x000000000044cafa in main::main::anon::expr_fn::aU ()
#9  0x00007ffff6a70cc7 in start::hae390795887db9d1aP::v0.1 ()
   from /mnt/code/claymore/claymore-game/build/../lib/libglfw-b34bcc5c-0.1.so
#10 0x00000000004498cc in main::main::he53ab76229e9c10cal::v0.1 ()
#11 0x00007ffff741d2a8 in task::__extensions__::build_start_wrapper::anon::anon::expr_fn::aT ()
   from /mnt/code/claymore/claymore-game/build/../../../../../usr/local/lib/rustc/x86_64-unknown-linux-gnu/lib/libgreen-3b3a1962-0.9-pre.so
#12 0x00007ffff7765bb8 in rt::task::__extensions__::run::anon::expr_fn::az ()
   from /mnt/code/claymore/claymore-game/build/../../../../../usr/local/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-04ff901e-0.9-pre.so
#13 0x00007ffff776d06c in rust_try ()
   from /mnt/code/claymore/claymore-game/build/../../../../../usr/local/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-04ff901e-0.9-pre.so
#14 0x00007ffff776595d in rt::task::Task::run::hbc187b1d40f6340eoDav::v0.9.pre ()
   from /mnt/code/claymore/claymore-game/build/../../../../../usr/local/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-04ff901e-0.9-pre.so
#15 0x00007ffff741cccc in task::__extensions__::build_start_wrapper::anon::expr_fn::aC ()
   from /mnt/code/claymore/claymore-game/build/../../../../../usr/local/lib/rustc/x86_64-unknown-linux-gnu/lib/libgreen-3b3a1962-0.9-pre.so
#16 0x0000000000000000 in ?? ()

, Where Limb is defined as:

#[deriving(Clone)]
pub struct Limb {
    key     : LimbKey,
    health  : Health,
    node    : @mut engine::space::Node,
}

pub type MemberKey  = int;
pub type MemberLimb = (grid::Location,Limb);

, and the top-level function is:

    fn add_member_cells( &mut self, m_key: MemberKey, m_limbs: &[MemberLimb], grid: &grid::TopologyGrid )   {
        for &(pos,limb) in m_limbs.iter()   {
            grid.get_index(pos).map(|index| {
                match self.cells[index] {
                    CellEmpty   => self.cells[index] = CellPart( m_key,~[limb] ),
                    CellPart(mkey,ref mut limbs) if mkey==m_key => limbs.push(limb),
                    _   => assert!({let (ref kind,_) = limb.key; !kind.is_vital() }),
                };
            });
        }
    }

A self-contained test case is not available yet.

[kvark]

Happens whenever I try to destructurize m_limbs[i] second part (of type Limb). E.g. the following code works:

for i in range(0,m_limbs.len()) {
    let (pos,_) = m_limbs[i];
    //let (pos,limb) = m_limbs[i]; //crashes
    //let (pos, ref limb) = m_limbs[i]; //crashes

[steveklabnik]

Is this issue still relevant? Without a self-contained case, I'm not sure we can figure this out.

[kvark]

Let's close this as "unable to reproduce", since that code base needs some effort to come online with the current rust, and I don't have time for it.

[luqmana]

I don't think this would resurface anyways since glue_take is gone.