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Crash "../src/librustc_typeck/collect.rs:1925: Self should not be the name of a regular parameter" #36688

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@alopatindev

Description

@alopatindev
Contributor

Nightly crashes with the following code:

impl<Self> A {}

Doesn't reproduce on 1.11.0.

$ rustc --version --verbose
rustc 1.13.0-nightly (4f9812a59 2016-09-21)
binary: rustc
commit-hash: 4f9812a59ab7247f0f52b01ca89b0793a2d289c3
commit-date: 2016-09-21
host: x86_64-unknown-linux-gnu
release: 1.13.0-nightly

$ RUST_BACKTRACE=1 rustc 1.rs
error: expected identifier, found keyword `Self`
 --> 1.rs:1:6
  |
1 | impl<Self> A {}
  |      ^^^^

error[E0412]: type name `A` is undefined or not in scope
 --> 1.rs:1:12
  |
1 | impl<Self> A {}
  |            ^ undefined or not in scope
  |
  = help: no candidates by the name of `A` found in your project; maybe you misspelled the name or forgot to import an external crate?

error: main function not found

error: internal compiler error: ../src/librustc_typeck/collect.rs:1925: `Self` should not be the name of a regular parameter
 --> 1.rs:1:6
  |
1 | impl<Self> A {}
  |      ^^^^

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: run with `RUST_BACKTRACE=1` for a backtrace

thread 'rustc' panicked at 'Box<Any>', ../src/librustc_errors/lib.rs:601
stack backtrace:
   1:     0x7fd351ce6612 - <unknown>
   2:     0x7fd351cf742d - <unknown>
   3:     0x7fd351cf487e - <unknown>
   4:     0x7fd351cf4f68 - std::panicking::rust_panic_with_hook::hb1322e5f2588b4db
   5:     0x7fd3500123b8 - <unknown>
   6:     0x7fd35013cac5 - <unknown>
   7:     0x7fd3500556f8 - <unknown>
   8:     0x7fd35006f83b - <unknown>
   9:     0x7fd35011c903 - <unknown>
  10:     0x7fd350116553 - <unknown>
  11:     0x7fd35011135b - rustc_typeck::collect::collect_item_types::ha4bc6b2aaead1c12
  12:     0x7fd350133e29 - rustc_typeck::check_crate::h56444fcd0efce52e
  13:     0x7fd3520a4941 - <unknown>
  14:     0x7fd35207199e - <unknown>
  15:     0x7fd35206340a - rustc_driver::driver::compile_input::hc0edbed7edb3eb18
  16:     0x7fd352090d41 - rustc_driver::run_compiler::h22d678d32fb7c300
  17:     0x7fd351fca763 - <unknown>
  18:     0x7fd351cff326 - __rust_maybe_catch_panic
  19:     0x7fd351fe97b9 - <unknown>
  20:     0x7fd351cf32d0 - <unknown>
  21:     0x7fd349f36493 - <unknown>
  22:     0x7fd3519c391c - __clone
  23:                0x0 - <unknown>

Activity

TimNN

TimNN commented on Sep 24, 2016

@TimNN
Contributor

Duplicate of #36638 and should be fixed in the next nightly (by #36649).

Aatch

Aatch commented on Sep 24, 2016

@Aatch
Contributor

Closing as duplicate

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          Crash "../src/librustc_typeck/collect.rs:1925: `Self` should not be the name of a regular parameter" · Issue #36688 · rust-lang/rust