ICE with cross-crate projection #37291
Description
Running rustdoc all testcases for this crate fails with an ICE. The relevant testcase is currently disabled. To enable it go to image/impl_core.rs:24 and remove the ignore marker.
rustc --version --verbose:
rustc 1.14.0-nightly (16eeeac78 2016-10-18)
binary: rustc
commit-hash: 16eeeac783d2ede28e09f2a433c612dea309fe33
commit-date: 2016-10-18
host: x86_64-pc-windows-msvc
release: 1.14.0-nightly
LLVM version: 3.9
This is the result of cargo test:
Finished debug [unoptimized + debuginfo] target(s) in 0.0 secs
Running target\debug\deps\img-7ec732e017a2f5eb.exe
running 4 tests
test px::test_arithmetic ... ok
test px::test_raw_buffer_funcs ... ok
test scalar::test_arithmetic ... ok
test image::test_image_buffer ... ok
test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured
Doc-tests img
running 8 tests
test px::generic::PixelArithmetic_0 ... ok
test image::generics::Image_0 ... ok
test image::impl_core::ImageVal_0 ... FAILED
test px::generic::Pixel::calc_minimum_pitch_0 ... ok
test px::generic::Pixel_0 ... ok
test scalar::generic::Scalar_0 ... ok
test px::impl_core::PixelVal_0 ... ok
test scalar::impl_core::ScalarVal_0 ... ok
failures:
---- image::impl_core::ImageVal_0 stdout ----
error: internal compiler error: ../src/librustc\traits\specialize/mod.rs:198: specializes: obligation `Obligation(predicate=Binder(ProjectionPredicate(ProjectionTy { trait_
ref: <_ as img::PixelArithmetic>, item_name: ScalarT(4511) }, _)),depth=1)` has inference types/regions
thread 'image::impl_core::ImageVal_0' panicked at 'Box<Any>', ../src/librustc_errors/lib.rs:656
stack backtrace:
0: 0x7fee2c7f804 - <u32 as std::sys::IsZero>::is_zero::hb501b477ff597565
1: 0x7fee2c7bca9 - std::panicking::Location::line::h756ee230b7a7fab3
2: 0x7fee2c7c6ed - std::panicking::rust_panic_with_hook::hcd9d05f53fa0dafc
3: 0x7fef3d128ea - <unknown>
4: 0x7fef3d2608d - rustc_errors::Handler::bug::haca77c19c882b432
5: 0x7fee197b2d5 - <rustc::util::ppaux::TraitAndProjections<'tcx> as core::fmt::Debug>::fmt::hb5d03a0e1370418a
6: 0x7fee189b262 - rustc::session::bug_fmt::hde22f071bf5a80ea
7: 0x7fee189af7c - rustc::session::bug_fmt::hde22f071bf5a80ea
8: 0x7fee1975d31 - <rustc::util::ppaux::TraitAndProjections<'tcx> as core::fmt::Debug>::fmt::hb5d03a0e1370418a
9: 0x7fee16c6dd7 - <unknown>
10: 0x7fee19165d5 - rustc::ty::context::TyCtxt::free_region_map::h82e8c7df0d75ed07
11: 0x7fee18d5cc6 - rustc::traits::specialize::specializes::hc06f881417f11f03
12: 0x7fee18c8ae0 - rustc::traits::select::SelectionContext::evaluate_obligation_conservatively::h7dc149b5b7563089
13: 0x7fee18c29da - rustc::traits::select::SelectionContext::evaluate_obligation_conservatively::h7dc149b5b7563089
14: 0x7fee18c0da7 - rustc::traits::select::SelectionContext::evaluate_obligation_conservatively::h7dc149b5b7563089
15: 0x7fee18c0430 - rustc::traits::select::SelectionContext::evaluate_obligation_conservatively::h7dc149b5b7563089
16: 0x7fee18bfc9a - rustc::traits::select::SelectionContext::evaluate_obligation::h918f689b79ed78ea
17: 0x7fee1da81e4 - rustc_typeck::check::method::<impl rustc_typeck::check::FnCtxt<'a, 'gcx, 'tcx>>::lookup_method_in_trait_adjusted::h23bf843644a86a1c
18: 0x7fee1dce0d8 - rustc_typeck::check::op::<impl rustc_typeck::check::FnCtxt<'a, 'gcx, 'tcx>>::check_user_unop::hccfdc1643ed36810
19: 0x7fee1dccd9c - rustc_typeck::check::op::<impl rustc_typeck::check::FnCtxt<'a, 'gcx, 'tcx>>::check_binop::h5fef06b12193950d
20: 0x7fee1dcc782 - rustc_typeck::check::op::<impl rustc_typeck::check::FnCtxt<'a, 'gcx, 'tcx>>::check_binop::h5fef06b12193950d
21: 0x7fee1dfa4ca - rustc_typeck::check::FnCtxt::check_struct_path::h0a3b8cb3a9a77f78
22: 0x7fee1dfa066 - rustc_typeck::check::FnCtxt::check_struct_path::h0a3b8cb3a9a77f78
23: 0x7fee1dfadf1 - rustc_typeck::check::FnCtxt::check_struct_path::h0a3b8cb3a9a77f78
24: 0x7fee1dfa066 - rustc_typeck::check::FnCtxt::check_struct_path::h0a3b8cb3a9a77f78
25: 0x7fee1e0accb - rustc_typeck::check::FnCtxt::check_stmt::he33c1a72110694ef
26: 0x7fee1e0b1ca - rustc_typeck::check::FnCtxt::check_block_no_value::h45608011ee74f15e
27: 0x7fee1dd5806 - <rustc_typeck::check::GatherLocalsVisitor<'a, 'gcx, 'tcx> as rustc::hir::intravisit::Visitor<'gcx>>::visit_ty::hd4c15b543ae85d6e
28: 0x7fee1dd38b0 - rustc_typeck::check::check_drop_impls::hf0fd3120466d7e2f
29: 0x7fee1dd7f79 - rustc_typeck::check::check_item_body::h3223fb19b212e96a
30: 0x7fee1dd072b - rustc_typeck::check::check_item_bodies::ha98a70a8fce7849f
31: 0x7fee1e4f563 - rustc_typeck::check_crate::hd5386d41de8aa25b
32: 0x7fee205b815 - <rustc_driver::Compilation as core::fmt::Debug>::fmt::hfc4845a68da21d3e
33: 0x7fee1f8a06e - <unknown>
34: 0x7fee2012353 - rustc_driver::driver::compile_input::h5b63ccd49eeeb98b
35: 0x7fee2144800 - <unknown>
36: 0x7fee2c81ce1 - _rust_maybe_catch_panic
37: 0x7fee227755e - rustdoc::test::run::hcc44ccd17e8a0827
38: 0x7fee2145a4f - <unknown>
39: 0x7fee2c81ce1 - _rust_maybe_catch_panic
40: 0x7fee5e63b4b - <unknown>
41: 0x7fee2c81ce1 - _rust_maybe_catch_panic
42: 0x7fee5e6b7fa - <unknown>
43: 0x7fee2c79b2e - std::sys::thread::Thread::new::hf599b376c47e7cb9
44: 0x76df59cc - BaseThreadInitThunk
thread 'image::impl_core::ImageVal_0' panicked at 'couldn't compile the test', ../src/librustdoc\test.rs:283
stack backtrace:
0: 0x7fee2c7f804 - <u32 as std::sys::IsZero>::is_zero::hb501b477ff597565
1: 0x7fee2c7bca9 - std::panicking::Location::line::h756ee230b7a7fab3
2: 0x7fee2c7c6ed - std::panicking::rust_panic_with_hook::hcd9d05f53fa0dafc
3: 0x7fee2142cd3 - <unknown>
4: 0x7fee2278e14 - rustdoc::test::run::hcc44ccd17e8a0827
5: 0x7fee2145a4f - <unknown>
6: 0x7fee2c81ce1 - _rust_maybe_catch_panic
7: 0x7fee5e63b4b - <unknown>
8: 0x7fee2c81ce1 - _rust_maybe_catch_panic
9: 0x7fee5e6b7fa - <unknown>
10: 0x7fee2c79b2e - std::sys::thread::Thread::new::hf599b376c47e7cb9
11: 0x76df59cc - BaseThreadInitThunk
failures:
image::impl_core::ImageVal_0
test result: FAILED. 7 passed; 1 failed; 0 ignored; 0 measured
error: test failed
This fails on stable and nightly. I do not have time to create a reduced test case right now. Hope this helps anyway.