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ICE when using Iron::listen. #18047

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reem opened this issue Oct 15, 2014 · 4 comments
Closed

ICE when using Iron::listen. #18047

reem opened this issue Oct 15, 2014 · 4 comments
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I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

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@reem
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reem commented Oct 15, 2014

This:

extern crate iron;

use iron::{Request, Response, IronResult, Iron, status};
use std::net::ip::Ipv4Addr;

fn main() {
    Iron::new(hello_world);

    fn hello_world(_: &mut Request) -> IronResult<Response> {
        Ok(Response::with(status::Ok, "hello world"))
    }
}

compiles fine, but:

extern crate iron;

use iron::{Request, Response, IronResult, Iron, status};
use std::net::ip::Ipv4Addr;

fn main() {
    Iron::new(hello_world).listen(Ipv4Addr(127, 0, 0, 1), 3000);

    fn hello_world(_: &mut Request) -> IronResult<Response> {
        Ok(Response::with(status::Ok, "hello world"))
    }
}

ICEs with:

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 'no entry found for key', /Users/rustbuild/src/rust-buildbot/slave/nightly-mac/build/src/libstd/collections/hashmap/map.rs:1093

stack backtrace:
   1:        0x10cebcd59 - rt::backtrace::imp::write::h189e19957ab9c695OLq
   2:        0x10cec0071 - failure::on_fail::h03dc2437e5a88345n2q
   3:        0x10d12ce95 - unwind::begin_unwind_inner::h033484cc1a8bac37Jud
   4:        0x109a37e7e - unwind::begin_unwind::h7267044357685618810
   5:        0x109f59800 - middle::ty::type_contents::tc_ty::h9dee7b4d0b2b2b26VCF
   6:        0x109f58f3c - middle::ty::type_contents::tc_ty::h9dee7b4d0b2b2b26VCF
   7:        0x109cdb5d6 - middle::ty::type_contents::h92aeb2c2b610e0e2QBF
   8:        0x109ee9fe9 - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::consume_expr::h14245152794985074657
   9:        0x109ee495f - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::walk_expr::h5075202552449147342
  10:        0x109eea03e - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::consume_expr::h14245152794985074657
  11:        0x109ee495f - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::walk_expr::h5075202552449147342
  12:        0x109eea293 - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::walk_local::h3960078952215051727
  13:        0x109eea1c5 - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::walk_block::h1681476813087692403
  14:        0x109ee4ab8 - middle::expr_use_visitor::ExprUseVisitor<'d, 't, TYPER>::walk_expr::h5075202552449147342
  15:        0x109eedd7a - middle::trans::_match::create_bindings_map::h7c926dcc9743685daOi
  16:        0x109e6336a - middle::trans::_match::trans_match::hda856724a8df18120Ji
  17:        0x109e51b37 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  18:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  19:        0x109e11e9c - middle::trans::controlflow::trans_stmt_semi::h690085bf4cf7dcecUCZ
  20:        0x109e11520 - middle::trans::controlflow::trans_stmt::hf3294d619d4310c2HyZ
  21:        0x109e12df8 - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  22:        0x109e16e78 - middle::trans::controlflow::trans_while::h5f1f833bc693e3166NZ
  23:        0x109e53a87 - middle::trans::expr::trans_rvalue_stmt_unadjusted::h429c506388a2e3d6LI4
  24:        0x109e12c64 - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  25:        0x109e12efd - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  26:        0x109e51bad - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  27:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  28:        0x109e12efd - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  29:        0x109ec399e - middle::trans::base::trans_closure::h7f2921f1f179d268ezf
  30:        0x109e667b5 - middle::trans::closure::trans_expr_fn::hfa0708e282a88c7eLFj
  31:        0x109e52a73 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  32:        0x109e50426 - middle::trans::expr::trans_unadjusted::hc4be1e5aa2eff2b4gb4
  33:        0x109e14056 - middle::trans::expr::trans::h49becb6a5c7b0a40cu3
  34:        0x109e497c4 - middle::trans::callee::trans_args::h82b5e82dbe357761802
  35:        0x109e1b801 - middle::trans::callee::trans_call_inner::hd16d8c5fe60896ffbG2
  36:        0x109e43814 - middle::trans::callee::trans_method_call::haf484f13878df218EB2
  37:        0x109e51646 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  38:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  39:        0x109e11e9c - middle::trans::controlflow::trans_stmt_semi::h690085bf4cf7dcecUCZ
  40:        0x109e11520 - middle::trans::controlflow::trans_stmt::hf3294d619d4310c2HyZ
  41:        0x109e12df8 - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  42:        0x109e18076 - middle::trans::controlflow::trans_for::h5d5ba302e1abeed7cQZ
  43:        0x109e53ac8 - middle::trans::expr::trans_rvalue_stmt_unadjusted::h429c506388a2e3d6LI4
  44:        0x109e12c64 - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  45:        0x109e12efd - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  46:        0x109ec399e - middle::trans::base::trans_closure::h7f2921f1f179d268ezf
  47:        0x109e0508a - middle::trans::base::trans_fn::hac9c962286515c42CKf
  48:        0x109e06f5e - middle::trans::monomorphize::monomorphic_fn::h96fb22308c4a0853u5Y
  49:        0x109e3dbcf - middle::trans::callee::trans_fn_ref_with_substs::hdc5652548ed88225tk2
  50:        0x109e3a3ab - middle::trans::callee::trans_fn_ref::hf590bd91aa7c0fd4181
  51:        0x109e1c24d - middle::trans::meth::trans_method_callee::h321387808d989836SRk
  52:        0x109e439bb - middle::trans::callee::trans_method_call::closure.123984
  53:        0x109e1a754 - middle::trans::callee::trans_call_inner::hd16d8c5fe60896ffbG2
  54:        0x109e43814 - middle::trans::callee::trans_method_call::haf484f13878df218EB2
  55:        0x109e51646 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  56:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  57:        0x109e12efd - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  58:        0x109e51bad - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  59:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  60:        0x109e12efd - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  61:        0x109ec399e - middle::trans::base::trans_closure::h7f2921f1f179d268ezf
  62:        0x109e667b5 - middle::trans::closure::trans_expr_fn::hfa0708e282a88c7eLFj
  63:        0x109e52a73 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  64:        0x109e50426 - middle::trans::expr::trans_unadjusted::hc4be1e5aa2eff2b4gb4
  65:        0x109e14056 - middle::trans::expr::trans::h49becb6a5c7b0a40cu3
  66:        0x109e497c4 - middle::trans::callee::trans_args::h82b5e82dbe357761802
  67:        0x109e1b801 - middle::trans::callee::trans_call_inner::hd16d8c5fe60896ffbG2
  68:        0x109e429a7 - middle::trans::callee::trans_call::hc740554d018cb851wA2
  69:        0x109e52201 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  70:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  71:        0x109e11e9c - middle::trans::controlflow::trans_stmt_semi::h690085bf4cf7dcecUCZ
  72:        0x109e11520 - middle::trans::controlflow::trans_stmt::hf3294d619d4310c2HyZ
  73:        0x109e12df8 - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  74:        0x109ec399e - middle::trans::base::trans_closure::h7f2921f1f179d268ezf
  75:        0x109e0508a - middle::trans::base::trans_fn::hac9c962286515c42CKf
  76:        0x109e06f5e - middle::trans::monomorphize::monomorphic_fn::h96fb22308c4a0853u5Y
  77:        0x109e3dbcf - middle::trans::callee::trans_fn_ref_with_substs::hdc5652548ed88225tk2
  78:        0x109e3a3ab - middle::trans::callee::trans_fn_ref::hf590bd91aa7c0fd4181
  79:        0x109e1c24d - middle::trans::meth::trans_method_callee::h321387808d989836SRk
  80:        0x109e439bb - middle::trans::callee::trans_method_call::closure.123984
  81:        0x109e1a754 - middle::trans::callee::trans_call_inner::hd16d8c5fe60896ffbG2
  82:        0x109e43814 - middle::trans::callee::trans_method_call::haf484f13878df218EB2
  83:        0x109e51646 - middle::trans::expr::trans_rvalue_dps_unadjusted::hc9fadfddd28f4d57KO4
  84:        0x109e12b9d - middle::trans::expr::trans_into::h61ab769bf22fa7c9iq3
  85:        0x109e11e9c - middle::trans::controlflow::trans_stmt_semi::h690085bf4cf7dcecUCZ
  86:        0x109e11520 - middle::trans::controlflow::trans_stmt::hf3294d619d4310c2HyZ
  87:        0x109e12df8 - middle::trans::controlflow::trans_block::haf894db31e0a118dNDZ
  88:        0x109ec399e - middle::trans::base::trans_closure::h7f2921f1f179d268ezf
  89:        0x109e0508a - middle::trans::base::trans_fn::hac9c962286515c42CKf
  90:        0x109e02805 - middle::trans::base::trans_item::h35195f56acc36a8eV3f
  91:        0x109ecd4d8 - middle::trans::base::trans_crate::h6442820c0a274264r2g
  92:        0x10a308615 - driver::driver::phase_4_translate_to_llvm::h8e1e0d5a654b87d1kAx
  93:        0x10a300718 - driver::driver::compile_input::h1f2de5081accd1dcf7w
  94:        0x10a389084 - driver::run_compiler::h00e7e552333d10b3yVA
  95:        0x10a3871b6 - driver::run::closure.147372
  96:        0x109a7034b - task::TaskBuilder<S>::try_future::closure.101547
  97:        0x109a70233 - task::TaskBuilder<S>::spawn_internal::closure.101518
  98:        0x10ad2179d - task::spawn_opts::closure.8528
  99:        0x10d19495c - rust_try_inner
  100:        0x10d194946 - rust_try
 ... <frames omitted>

I tried to debug this with @eddyb on IRC a few days ago, but haven't been able to make any progress.
@kmcallister kmcallister added the I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ label Oct 15, 2014
@reem
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reem commented Oct 25, 2014

This is fixed in iron/master, but reproducible in https://github.com/reem/iron/tree/feat/taskpool HEAD.

Narrowing the code led to this:

Actual code from the feat/taskpool branch, src/iron.rs, lines 123-125:

// Dispatch the request
let res = handler.call(&mut req).map_err(|e| {
    handler.catch(&mut req, e)
});

ICES:

let res = handler.call(&mut req);

Fine:

let res: IronResult<Response> = fail!():

@ghost
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ghost commented Oct 30, 2014

Potentially a duplicate of #17810.

@reem
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reem commented Nov 5, 2014

This is currently holding back a PR that improves Iron's performance by 80%. I'd be willing to pursue a fix if somebody pointed me in the wrong direction, as I'd really like to land this change.

@reem
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reem commented Nov 5, 2014

I checked again just now and this actually appears to be fixed! Joyful times!

@reem reem closed this as completed Nov 5, 2014
lnicola pushed a commit to lnicola/rust that referenced this issue Sep 25, 2024
@bors
Auto merge of rust-lang#18093 - ShoyuVanilla:skip-dyn-trait-cast-chec…
7d8c5ad 
…k, r=Veykril

Skip checks for cast to dyn traits

It seems that chalk fails to solve some obvious goals when there are some recursiveness in trait environments.
And it doesn't support trait upcasting yet. rust-lang/chalk#796

This PR just skips for casting into types containing `dyn Trait` to prevent false positive diagnostics like rust-lang#18047 and rust-lang#18083
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I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
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@kmcallister @reem