assertion failure in rustc

[blastrock]

Hi,

Just triggered an assertion failure with this code:

use std::num::FloatMath;

fn main() {
    FloatMath::sin(18.0f64);
}

Which gives:

error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'assertion failed: `(left == right) && (right == left)` (left: `1`, right: `0`)', /home/blastrock/packages/rust/src/librustc/middle/trans/callee.rs:528

stack backtrace:
   1:     0x7ff95c46aa80 - rt::backtrace::imp::write::hbe5a5bcc01f62aea0Kq
   2:     0x7ff95c46dbb0 - failure::on_fail::hc1bcc8cdec657a65n6q
   3:     0x7ff95cc14210 - unwind::begin_unwind_inner::hde83cd2a83f33b328yd
   4:     0x7ff95cc13d50 - unwind::begin_unwind_fmt::h445f8f8b255d9121Awd
   5:     0x7ff95d3e2370 - middle::trans::callee::trans_fn_ref_with_substs::hbf1c35fef7f506773p3
   6:     0x7ff95d3e03c0 - middle::trans::callee::trans_fn_ref::hec0ed90aee8829a5Qd3
   7:     0x7ff95d3e8ca0 - middle::trans::callee::trans_call::closure.123303
   8:     0x7ff95d3c24e0 - middle::trans::callee::trans_call_inner::h42827e201ddc4be0LL3
   9:     0x7ff95d3e89f0 - middle::trans::callee::trans_call::h14ba3d11f87f2d2f6F3
  10:     0x7ff95d3f7b00 - middle::trans::expr::trans_rvalue_dps_unadjusted::h4af8fc65853fae52vU5
  11:     0x7ff95d3ba740 - middle::trans::expr::trans_into::hb35b3ae595bf869b3v4
  12:     0x7ff95d3b9b30 - middle::trans::controlflow::trans_stmt_semi::h92bc9667c69c4d8ahL0
  13:     0x7ff95d3b90e0 - middle::trans::controlflow::trans_stmt::hf364b78cf28d31654G0
  14:     0x7ff95d3bab60 - middle::trans::controlflow::trans_block::h909ab2de346ddc39aM0
  15:     0x7ff95d463380 - middle::trans::base::trans_closure::h1b83b7ff27159e60dSg
  16:     0x7ff95d3ad0b0 - middle::trans::base::trans_fn::h30dff13bf84078adB3g
  17:     0x7ff95d3aa700 - middle::trans::base::trans_item::he04e952edb19bc9fUmh
  18:     0x7ff95d46e270 - middle::trans::base::trans_crate::h0167fac9c9c445a4Hki
  19:     0x7ff95d8c7940 - driver::driver::phase_4_translate_to_llvm::h912749baab7dab90blA
  20:     0x7ff95d8be9e0 - driver::driver::compile_input::hbfa91f151c1dcfee6Rz
  21:     0x7ff95d949830 - driver::run_compiler::hc29782fd560328acqFD
  22:     0x7ff95d9496e0 - driver::run::closure.145950
  23:     0x7ff95d02f240 - task::TaskBuilder<S>::try_future::closure.103325
  24:     0x7ff95d02f020 - task::TaskBuilder<S>::spawn_internal::closure.103296
  25:     0x7ff95e1ac090 - task::spawn_opts::closure.8476
  26:     0x7ff95cc79380 - rust_try_inner
  27:     0x7ff95cc79370 - rust_try
  28:     0x7ff95cc11ad0 - unwind::try::h861b4e16b59b7f65Qnd
  29:     0x7ff95cc11950 - task::Task::run::h157dd7d1fdff9272uDc
  30:     0x7ff95e1abdd0 - task::spawn_opts::closure.8416
  31:     0x7ff95cc13220 - thread::thread_start::h4a8949100a62b815FXc
  32:     0x7ff95bf31fe0 - start_thread
  33:     0x7ff95c8e4bf9 - __clone
  34:                0x0 - <unknown>

[ghost]

Thanks for the report!

Closing as a dupe of #18061.