Closed
Description
Code
code from ./src/test/ui/associated-types/associated-types-path-1.rs
// Test that we have one and only one associated type per ref.
pub trait Foo {
type A;
}
pub trait Bar {
type A;
}
pub fn f1<T>(a: T, x: T::A) {} //~ERROR associated type `A` not found
pub fn f2<T: Foo + Bar>(a: T, x: T::A) {} //~ERROR ambiguous associated type `A`
pub fn main() {}Meta
rustc --version --verbose:
rustdoc 1.50.0-nightly (1c389ffef 2020-11-24)
binary: rustdoc
commit-hash: 1c389ffeff814726dec325f0f2b0c99107df2673
commit-date: 2020-11-24
host: x86_64-unknown-linux-gnu
release: 1.50.0-nightly
Error output
error[E0220]: associated type `A` not found for `T`
--> ./src/test/ui/associated-types/associated-types-path-1.rs:10:26
|
10 | pub fn f1<T>(a: T, x: T::A) {} //~ERROR associated type `A` not found
| ^ associated type `A` not found
error[E0221]: ambiguous associated type `A` in bounds of `T`
--> ./src/test/ui/associated-types/associated-types-path-1.rs:11:34
|
4 | type A;
| ------- ambiguous `A` from `Foo`
...
7 | type A;
| ------- ambiguous `A` from `Bar`
...
11 | pub fn f2<T: Foo + Bar>(a: T, x: T::A) {} //~ERROR ambiguous associated type `A`
| ^^^^ ambiguous associated type `A`
|
help: use fully qualified syntax to disambiguate
|
11 | pub fn f2<T: Foo + Bar>(a: T, x: <T as Bar>::A) {} //~ERROR ambiguous associated type `A`
| ^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
11 | pub fn f2<T: Foo + Bar>(a: T, x: <T as Foo>::A) {} //~ERROR ambiguous associated type `A`
| ^^^^^^^^^^^^^
thread 'rustc' panicked at 'attempted .def_id() on invalid res: Err', /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/compiler/rustc_hir/src/def.rs:408:32
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.50.0-nightly (1c389ffef 2020-11-24) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0220, E0221.
For more information about an error, try `rustc --explain E0220`.
Backtrace
error[E0220]: associated type `A` not found for `T`
--> ./src/test/ui/associated-types/associated-types-path-1.rs:10:26
|
10 | pub fn f1<T>(a: T, x: T::A) {} //~ERROR associated type `A` not found
| ^ associated type `A` not found
error[E0221]: ambiguous associated type `A` in bounds of `T`
--> ./src/test/ui/associated-types/associated-types-path-1.rs:11:34
|
4 | type A;
| ------- ambiguous `A` from `Foo`
...
7 | type A;
| ------- ambiguous `A` from `Bar`
...
11 | pub fn f2<T: Foo + Bar>(a: T, x: T::A) {} //~ERROR ambiguous associated type `A`
| ^^^^ ambiguous associated type `A`
|
help: use fully qualified syntax to disambiguate
|
11 | pub fn f2<T: Foo + Bar>(a: T, x: <T as Bar>::A) {} //~ERROR ambiguous associated type `A`
| ^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
11 | pub fn f2<T: Foo + Bar>(a: T, x: <T as Foo>::A) {} //~ERROR ambiguous associated type `A`
| ^^^^^^^^^^^^^
thread 'rustc' panicked at 'attempted .def_id() on invalid res: Err', /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/compiler/rustc_hir/src/def.rs:408:32
stack backtrace:
0: 0x7fbb8f223e30 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
1: 0x7fbb8f223e30 - std::backtrace_rs::backtrace::trace_unsynchronized::h86340908ff889faa
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fbb8f223e30 - std::sys_common::backtrace::_print_fmt::h43f85f9b18230404
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7fbb8f223e30 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc132ae1a5b5aa7cd
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/sys_common/backtrace.rs:46:22
4: 0x7fbb8f296c4c - core::fmt::write::hdf023a0036d2a25f
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/core/src/fmt/mod.rs:1078:17
5: 0x7fbb8f2159a2 - std::io::Write::write_fmt::h8580846154bcb66a
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/io/mod.rs:1519:15
6: 0x7fbb8f227a95 - std::sys_common::backtrace::_print::h7ee55fed88d107a3
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/sys_common/backtrace.rs:49:5
7: 0x7fbb8f227a95 - std::sys_common::backtrace::print::h54a7d3e52a524177
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/sys_common/backtrace.rs:36:9
8: 0x7fbb8f227a95 - std::panicking::default_hook::{{closure}}::h60921e857bf55a40
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/panicking.rs:208:50
9: 0x7fbb8f2275ea - std::panicking::default_hook::hf0f9afb1017317fc
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/panicking.rs:225:9
10: 0x7fbb8fab4bb8 - rustc_driver::report_ice::ha25ae86a5858acc3
11: 0x7fbb8f228396 - std::panicking::rust_panic_with_hook::h8d66bf42b407aaea
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/panicking.rs:595:17
12: 0x7fbb8f227eb7 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/panicking.rs:497:13
13: 0x7fbb8f2242ec - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/sys_common/backtrace.rs:141:18
14: 0x7fbb8f227e19 - rust_begin_unwind
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/panicking.rs:493:5
15: 0x7fbb8f227dcb - std::panicking::begin_panic_fmt::hee67ce14b77d0396
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/panicking.rs:435:5
16: 0x55d873ee0428 - rustc_hir::def::Res<Id>::def_id::{{closure}}::h06aeb0acc3e82fae
17: 0x55d8740cda3d - rustdoc::clean::utils::register_res::h9cf2ca016844dce1
18: 0x55d8740cd5b1 - rustdoc::clean::utils::resolve_type::hc4dd6a14930238e2
19: 0x55d8740412af - <rustc_hir::hir::Ty as rustdoc::clean::Clean<rustdoc::clean::types::Type>>::clean::h7e12b892841ced7b
20: 0x55d873e61dcf - <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold::h64c59269cd1e2f54
21: 0x55d87403e666 - <(&rustc_hir::hir::FnDecl,A) as rustdoc::clean::Clean<rustdoc::clean::types::FnDecl>>::clean::h0d96c315d7646885
22: 0x55d8740ce18e - rustdoc::clean::utils::enter_impl_trait::h89ecd5f85c6cf117
23: 0x55d874046339 - <(&rustc_hir::hir::Item,core::option::Option<rustc_span::symbol::Ident>) as rustdoc::clean::Clean<alloc::vec::Vec<rustdoc::clean::types::Item>>>::clean::h6efe2622d62f0879
24: 0x55d87415201f - <alloc::vec::Vec<T,A> as alloc::vec::SpecExtend<T,I>>::spec_extend::hbf27f2437fec8031
25: 0x55d8740cede8 - <rustdoc::doctree::Module as rustdoc::clean::Clean<rustdoc::clean::types::Item>>::clean::hee8955bac14e83bc
26: 0x55d8740c8153 - rustdoc::clean::utils::krate::h68bb50ab032123ce
27: 0x55d873e43b3b - rustdoc::core::run_global_ctxt::h7cf39be6ea65128e
28: 0x55d873ebdece - rustc_interface::passes::QueryContext::enter::hedb615e17429b641
29: 0x55d873fb3917 - rustc_interface::interface::create_compiler_and_run::h25fa5935e40978f2
30: 0x55d873e5a0d3 - rustdoc::main_options::h8a5cda9c1c8c625b
31: 0x55d873fa4a68 - rustc_span::with_session_globals::h7a83fbbd64fb6823
32: 0x55d873e8b30e - std::sys_common::backtrace::__rust_begin_short_backtrace::h50722f4a01515f7b
33: 0x55d873fbd03a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h22276985fb540191
34: 0x7fbb8f23765a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hea1090dbdcecbf5a
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/alloc/src/boxed.rs:1318:9
35: 0x7fbb8f23765a - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8d5723d3912bd325
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/alloc/src/boxed.rs:1318:9
36: 0x7fbb8f23765a - std::sys::unix::thread::Thread::new::thread_start::hc17a425ca2995724
at /rustc/1c389ffeff814726dec325f0f2b0c99107df2673/library/std/src/sys/unix/thread.rs:71:17
37: 0x7fbb8f1133e9 - start_thread
38: 0x7fbb8eef9293 - __GI___clone
39: 0x0 - <unknown>
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.50.0-nightly (1c389ffef 2020-11-24) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0220, E0221.
For more information about an error, try `rustc --explain E0220`.