Do not issue E0071 if a type error has already been reported #88899
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Sep 17, 2021
…laumeGomez Rollup of 10 pull requests Successful merges: - rust-lang#86422 (Emit clearer diagnostics for parens around `for` loop heads) - rust-lang#87460 (Point to closure when emitting 'cannot move out' for captured variable) - rust-lang#87566 (Recover invalid assoc type bounds using `==`) - rust-lang#88666 (Improve build command for compiler docs) - rust-lang#88899 (Do not issue E0071 if a type error has already been reported) - rust-lang#88949 (Fix handling of `hir::GenericArg::Infer` in `wrong_number_of_generic_args.rs`) - rust-lang#88953 (Add chown functions to std::os::unix::fs to change the owner and group of files) - rust-lang#88954 (Allow `panic!("{}", computed_str)` in const fn.) - rust-lang#88964 (Add rustdoc version into the help popup) - rust-lang#89012 (Suggest removing `#![feature]` for library features that have been stabilized) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Fixes #88844. A suggested fix is already included in the error message for E0412, so with my changes, E0071 is simply not emitted anymore if the type in question is a "type error". This makes sense, I think, because we cannot confidently state that something is "not a struct" if we couldn't resolve it properly; and it's unnecessary to pollute the output with this additional error message, as it is a direct consequence of the former error.
I have also addressed the issue mentioned in #88844 (comment) by changing the fixed example in the documentation to more closely match the erroneous code example.