ICE when combine some macro and trait

[bombless]

This crash occurred when I compile some code that simulate C# linq.

I use Windows 8.1 64-bit but I tried to compile this code with playpen and it also crashed so I think the bug is not related to platform.

rustc 1.0.0-nightly (44a287e 2015-01-08 17:03:40 -0800)
binary: rustc
commit-hash: 44a287e
commit-date: 2015-01-08 17:03:40 -0800
host: i686-pc-windows-gnu
release: 1.0.0-nightly

trait A<T> { fn b(self, T); }
impl<T> A<T> for (){ fn b(self, _: T) {} }
macro_rules! c {
    { $d:expr, $e:expr } => ( $d.b(|&:| $e.b(|&:| ())) )
}
fn main(){ c! { (), () } }

thread 'rustc' panicked at 'assertion failed: begin <= end', C:\bot\slave\nightly-dist-rustc-win-32\build\src\libcore\str\mod.rs:1243

stack backtrace:
   1: 0x62f3ce2f - rt::unwind::register::he1c697e5991dcbf88Dz
   2: 0x62ec350c - rt::unwind::begin_unwind_inner::ha377d8b3de16ce78GBz
   3: 0x62ec3924 - rt::unwind::begin_unwind_fmt::h25a41fc73b9f5e87dAz
   4: 0x62f3c98f - rust_begin_unwind
   5: 0x62f52035 - panicking::panic_fmt::h18e6db1f11aad203pfl
   6: 0x62f4e844 - panicking::panic::h8e2ab44bb07b5550sdl
   7: 0x62f5b7fb - str::slice_error_fail::hdbd045e792bc4657BZs
   8: 0x658bc83e - codemap::CodeMap::span_to_snippet::he902ade52a32b95fx4E
   9:  0x100127a - trans::monomorphize::MonoId<'tcx>...std..cmp..PartialEq::ne::h727788bba72f2338pSd
  10:  0x10c8f82 - trans::base::IsUnboxedClosureFlag...std..clone..Clone::clone::h06447aa38520ecc0QYt
  11:  0x104e2d8 - trans::type_::Type...std..cmp..PartialEq::ne::hf9eef0ba524265afTFJ
  12:  0x104b367 - trans::type_::Type...std..cmp..PartialEq::ne::hf9eef0ba524265afTFJ
  13:  0x10033d1 - trans::expr::Dest...std..cmp..PartialEq::eq::hb0839a09c08a2b84tvh
  14:  0x10155e1 - trans::cleanup::FunctionContext<'blk, 'tcx>.CleanupMethods<'blk, 'tcx>::pop_custom_cleanup_scope::h886690550c88d0c9mKK
  15:  0x1048d8b - trans::type_::Type...std..cmp..PartialEq::ne::hf9eef0ba524265afTFJ
  16:  0x104c343 - trans::type_::Type...std..cmp..PartialEq::ne::hf9eef0ba524265afTFJ
  17:  0x10023f4 - trans::cleanup::FunctionContext<'blk, 'tcx>.CleanupMethods<'blk, 'tcx>::pop_and_trans_ast_cleanup_scope::hac20a52d4741489fMFK
  18:  0x1002fed - trans::cleanup::FunctionContext<'blk, 'tcx>.CleanupMethods<'blk, 'tcx>::pop_and_trans_ast_cleanup_scope::hac20a52d4741489fMFK
  19:  0x10cb633 - trans::base::IsUnboxedClosureFlag...std..clone..Clone::clone::h06447aa38520ecc0QYt
  20:   0xfee211 - trans::context::CrateContext<'b, 'tcx>::sess::h79316aba111d1863Itm
  21:   0xfe9b27 - trans::context::CrateContext<'b, 'tcx>::stats::h24ccf80bb6dc7b15EGm
  22:  0x10d1827 - trans::base::trans_crate::h11d67a5a21c53016Wsv
  23: 0x6b7ea1cd - driver::phase_4_translate_to_llvm::hef7eb92877dd1b88PFa
  24: 0x6b7c3248 - driver::compile_input::hdb1b2f5e3352478cxba
  25: 0x6b892829 - run::h9a36f6fac224e9f5V3b
  26: 0x6b890caf - run::h9a36f6fac224e9f5V3b
  27: 0x6b88f9af - run::h9a36f6fac224e9f5V3b
  28: 0x62f6879c - rust_try
  29: 0x62f2e597 - sys::tcp::TcpListener::bind::h84f1a79868ba93248qw
  30: 0x772f919f - BaseThreadInitThunk
  31: 0x77b90bbb - RtlInitializeExceptionChain

[bombless]

trait A<T> { fn b(self, T); }
impl<T> A<T> for (){ fn b(self, _: T) {} }
macro_rules! c {
    { $d:expr, $e:expr } => ( $d.b(|| $e.b(|| ())) )
}
fn main(){ c! { (), () } }

Seems that it has been fixed... not sure how.
http://is.gd/oQJi9M