Problem with Owned Boxes

[bytesnake]

Hi, rustc gives me a strange error if I'm trying to allocate an owned box,
it seems like rust hasn't any idea about the type which is requested ...

http://static.rust-lang.org/doc/0.10/src/rustc/home/rustbuild/src/rust-buildbot/slave/dist2-linux/build/src/librustc/middle/trans/type_of.rs.html#282

let a: ~u8 = ~42;

Getting:

error: internal compiler error: type_of with ty_param
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at '~Any', /build/rust/src/rust-0.10/src/libsyntax/diagnostic.rs:123
stack backtrace:
   1:     0x7f57cc8144e0 - rt::backtrace::imp::write::hd3c2755a219a6730gZb::v0.10
   2:     0x7f57cc775cd0 - rt::unwind::begin_unwind_inner::hd04ee43a7df64e91Jzb::v0.10
   3:     0x7f57cb601ca0 - <unknown>
   4:     0x7f57cb602880 - diagnostic::Handler::bug::h6603a56cf733bd1eYVb::v0.10
   5:     0x7f57cd1d2a20 - driver::session::Session::bug::haab9bed737653edaDhh::v0.10
   6:     0x7f57cd20fad0 - middle::trans::type_of::type_of::h2e2847dca79d48eeBXj::v0.10
   7:     0x7f57cd20fad0 - middle::trans::type_of::type_of::h2e2847dca79d48eeBXj::v0.10
   8:     0x7f57cd27ff40 - middle::trans::type_of::type_of_rust_fn::h21848b2aa25e3975GPj::v0.10
   9:     0x7f57cd296f60 - middle::trans::base::decl_rust_fn::h31fc7132f69813ba1Zm::v0.10
  10:     0x7f57cd2ab190 - <unknown>
  11:     0x7f57cd1cfa00 - middle::trans::base::get_item_val::h546e22b45841695alep::v0.10
  12:     0x7f57cd22a090 - middle::trans::callee::trans_fn_ref_with_vtables::h1aefbd315afc02079jd::v0.10
  13:     0x7f57cd234a50 - <unknown>
  14:     0x7f57cd231100 - middle::trans::callee::trans_call_inner::h7fd65b79c47d6622aKd::v0.10
  15:     0x7f57cd20c5d0 - middle::trans::callee::trans_lang_call::hec5ba9c33468defclGd::v0.10
  16:     0x7f57cd20d0c0 - middle::trans::glue::trans_exchange_free::h77600c567c2fc4dbzsb::v0.10
  17:     0x7f57cd21a750 - middle::trans::base::with_cond::h161ee669dac54f39s9n::v0.10
  18:     0x7f57cd212be0 - <unknown>
  19:     0x7f57cd2124c0 - <unknown>
  20:     0x7f57cd20f240 - middle::trans::glue::get_drop_glue::hda4485ab65bb20daeyb::v0.10
  21:     0x7f57cd20efc0 - middle::trans::glue::drop_ty::he02755e403fc6bf7Uvb::v0.10
  22:     0x7f57cd201860 - middle::trans::cleanup::FunctionContext$LT$$x27a$GT$.CleanupMethods$LT$$x27a$GT$::pop_and_trans_ast_cleanup_scope::h679e6bebc605780cHCF::v0.10
  23:     0x7f57cd201c10 - middle::trans::controlflow::trans_block::h27d861b2c0e3c1fcg2a::v0.10
  24:     0x7f57cd2a47e0 - middle::trans::base::trans_closure::ha7af676dea5ed3450Ao::v0.10
  25:     0x7f57cd1d3890 - middle::trans::base::trans_fn::h6d528e71241ec959OIo::v0.10
  26:     0x7f57cd1ce7d0 - middle::trans::base::trans_item::ha2e98f90ac18978fpUo::v0.10
  27:     0x7f57cd2a91f0 - middle::trans::base::trans_mod::h70be4be71d9acdd1uZo::v0.10
  28:     0x7f57cd1ce7d0 - middle::trans::base::trans_item::ha2e98f90ac18978fpUo::v0.10
  29:     0x7f57cd2a91f0 - middle::trans::base::trans_mod::h70be4be71d9acdd1uZo::v0.10
  30:     0x7f57cd2b2a40 - middle::trans::base::trans_crate::hefba93dabc9e4a62Xvq::v0.10
  31:     0x7f57cd9c6ed0 - driver::driver::phase_4_translate_to_llvm::h03114552db920090DGf::v0.10
  32:     0x7f57cd9c90a0 - driver::driver::compile_input::hb78836dd16d0c5b8sWf::v0.10
  33:     0x7f57cd9ed700 - run_compiler::hfbfadce32e0a84c5Yzn::v0.10
  34:     0x7f57cda04c50 - <unknown>
  35:     0x7f57cda03580 - <unknown>
  36:     0x7f57cd9feeb0 - <unknown>
  37:     0x7f57cf718000 - <unknown>
  38:     0x7f57cc80f970 - <unknown>
  39:     0x7f57cc81af80 - rust_try
  40:     0x7f57cc80f7b0 - rt::task::Task::run::hd67f170816441df1fs9::v0.10
  41:     0x7f57cf717dd0 - <unknown>
  42:     0x7f57cc813020 - <unknown>
  43:     0x7f57c9b34fe0 - start_thread
  44:     0x7f57cc443ce9 - clone
  45:                0x0 - <unknown>

[pczarn]

@bytesnake Hi, the declaration of exchange_free in kernel/heap.rsis not accepted by Rust. A valid declaration is:

pub unsafe fn free(ptr: *mut u8)

I'm fixing this.