Matthias Krüger f1e180451b Rollup merge of #116496 - estebank:question-method-chain-context, r=compiler-errors ... Provide context when `?` can't be called because of `Result<_, E>` When a method chain ending in `?` causes an E0277 because the expression's `Result::Err` variant doesn't have a type that can be converted to the `Result<_, E>` type parameter in the return type, provide additional context of which parts of the chain can and can't support the `?` operator. ``` error[E0277]: `?` couldn't convert the error to `String` --> $DIR/question-mark-result-err-mismatch.rs:27:25 | LL | fn bar() -> Result<(), String> { | ------------------ expected `String` because of this LL | let x = foo(); | ----- this has type `Result<_, String>` ... LL | .map_err(|_| ())?; | ---------------^ the trait `From<()>` is not implemented for `String` | | | this can't be annotated with `?` because it has type `Result<_, ()>` | = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait = help: the following other types implement trait `From<T>`: <String as From<char>> <String as From<Box<str>>> <String as From<Cow<'a, str>>> <String as From<&str>> <String as From<&mut str>> <String as From<&String>> = note: required for `Result<(), String>` to implement `FromResidual<Result<Infallible, ()>>` ``` Fix #72124.		2023-12-06 17:21:56 +01:00
..
rustc	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00
rustc_abi	Rename LayoutCalculator::delay_bug as LayoutCalculator::delayed_bug.	2023-12-02 09:01:34 +11:00
rustc_arena	Document reentrancy in *Arena::alloc_from_iter	2023-12-04 02:24:10 +01:00
rustc_ast	Address code review feedback	2023-12-04 14:33:46 -08:00
rustc_ast_lowering	Address code review feedback	2023-12-04 14:33:46 -08:00
rustc_ast_passes	Address code review feedback	2023-12-04 14:33:46 -08:00
rustc_ast_pretty	Option<CoroutineKind>	2023-12-04 13:03:37 -08:00
rustc_attr	Use Session::diagnostic in more places.	2023-12-02 09:01:35 +11:00
rustc_baked_icu_data	Bump cfg(bootstrap)s	2023-11-15 19:41:28 -05:00
rustc_borrowck	Provide more suggestions for cloning immutable bindings	2023-12-04 21:54:34 +00:00
rustc_builtin_macros	Auto merge of #118655 - compiler-errors:rollup-vrngyzn, r=compiler-errors	2023-12-06 04:20:51 +00:00
rustc_codegen_cranelift	Give Handler::fatal and Session::fatal the same return type.	2023-12-04 15:42:06 +11:00
rustc_codegen_gcc	Rename some arguments.	2023-12-04 18:57:41 +11:00
rustc_codegen_llvm	Rollup merge of #118587 - nnethercote:cleanup-error-handlers-2, r=compiler-errors	2023-12-05 14:52:44 -05:00
rustc_codegen_ssa	Rollup merge of #118573 - petrochenkov:pathdatakind, r=TaKO8Ki	2023-12-04 21:19:45 +09:00
rustc_const_eval	Rollup merge of #118565 - RalfJung:numeric_intrinsic, r=davidtwco	2023-12-04 20:46:09 +01:00
rustc_data_structures	jobserver: check file descriptors	2023-11-29 18:00:03 +03:00
rustc_driver	Bump cfg(bootstrap)s	2023-11-15 19:41:28 -05:00
rustc_driver_impl	rustc_driver_impl: Address all rustc::potential_query_instability lints	2023-12-05 06:19:14 +01:00
rustc_error_codes	Yeet E0744	2023-11-28 20:40:38 +00:00
rustc_error_messages	Remove rustc_error_messages/messages.ftl.	2023-11-26 08:37:27 +11:00
rustc_errors	Inline and remove fatal_no_raise.	2023-12-04 18:57:42 +11:00
rustc_expand	Auto merge of #118655 - compiler-errors:rollup-vrngyzn, r=compiler-errors	2023-12-06 04:20:51 +00:00
rustc_feature	Rollup merge of #118123 - RalfJung:internal-lib-features, r=compiler-errors	2023-12-05 14:52:41 -05:00
rustc_fluent_macro	Add a useful comment.	2023-11-26 08:38:02 +11:00
rustc_fs_util	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00
rustc_graphviz	remove unused pub fn	2023-11-23 14:11:02 +03:00
rustc_hir	Lower return types for gen fn to impl Iterator	2023-12-04 11:23:05 -08:00
rustc_hir_analysis	Auto merge of #117661 - TheLazyDutchman:point_out_shadowed_associated_types, r=petrochenkov	2023-12-06 10:59:24 +00:00
rustc_hir_pretty	Add never_patterns feature gate	2023-11-29 03:58:29 +01:00
rustc_hir_typeck	Auto merge of #118655 - compiler-errors:rollup-vrngyzn, r=compiler-errors	2023-12-06 04:20:51 +00:00
rustc_incremental	Rename HandlerInner::delayed_span_bugs as HandlerInner::span_delayed_bugs.	2023-12-02 09:01:34 +11:00
rustc_index	Replace no_ord_impl with orderable.	2023-11-22 18:38:17 +11:00
rustc_index_macros	Put backticks around some attributes in doc comments.	2023-11-27 09:37:01 +11:00
rustc_infer	Add print_trait_sugared	2023-12-05 17:15:46 +00:00
rustc_interface	rustc_interface: Address all rustc::potential_query_instability lints	2023-12-05 06:33:38 +01:00
rustc_lexer	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00
rustc_lint	Option<CoroutineKind>	2023-12-04 13:03:37 -08:00
rustc_lint_defs	vis note for no pub reexports glob import	2023-12-01 12:10:07 +08:00
rustc_llvm	Auto merge of #113923 - DianQK:restore-no-builtins-lto, r=pnkfelix	2023-12-01 21:45:18 +00:00
rustc_log	rustc_log: provide a way to init logging based on the values, not names, of the env vars	2023-11-11 15:24:33 +01:00
rustc_macros	Unify HashStable implementations	2023-11-21 05:49:45 +00:00
rustc_metadata	Auto merge of #118488 - andjo403:remove_deadlock, r=SparrowLii	2023-12-05 14:02:15 +00:00
rustc_middle	Add print_trait_sugared	2023-12-05 17:15:46 +00:00
rustc_mir_build	Rollup merge of #118598 - Nadrieril:remove_precise_pointer_size_matching, r=davidtwco	2023-12-05 16:08:35 +01:00
rustc_mir_dataflow	Deparameterize Results and ResultsCursor.	2023-11-27 10:35:43 +11:00
rustc_mir_transform	Auto merge of #118595 - Zalathar:visible-macro, r=TaKO8Ki	2023-12-06 14:01:21 +00:00
rustc_monomorphize	merge DefKind::Coroutine into DefKind::Closure	2023-11-26 21:05:08 +08:00
rustc_parse	Auto merge of #118655 - compiler-errors:rollup-vrngyzn, r=compiler-errors	2023-12-06 04:20:51 +00:00
rustc_parse_format	Auto merge of #117819 - fmease:rustc_parse_format-stable-rustc, r=Nilstrieb	2023-11-15 14:55:35 +00:00
rustc_passes	Rename HandlerInner::delay_span_bug as HandlerInner::span_delayed_bug.	2023-12-02 09:01:19 +11:00
rustc_privacy	Auto merge of #118470 - nnethercote:cleanup-error-handlers, r=compiler-errors	2023-12-02 02:48:34 +00:00
rustc_query_impl	QueryContext: rename try_collect_active_jobs -> collect_active_jobs and change it's return type from Option<QueryMap> to QueryMap	2023-11-27 18:13:15 +03:00
rustc_query_system	Rollup merge of #118123 - RalfJung:internal-lib-features, r=compiler-errors	2023-12-05 14:52:41 -05:00
rustc_resolve	Auto merge of #118457 - eholk:genfn, r=compiler-errors	2023-12-05 18:37:15 +00:00
rustc_serialize	Call FileEncoder::finish in rmeta encoding	2023-11-22 22:49:22 -05:00
rustc_session	Rollup merge of #118587 - nnethercote:cleanup-error-handlers-2, r=compiler-errors	2023-12-05 14:52:44 -05:00
rustc_smir	Add more information to stable Instance	2023-12-01 16:22:06 -08:00
rustc_span	Detect incorrect ; in Option::ok_or_else and Result::map_err	2023-12-05 22:24:29 +00:00
rustc_symbol_mangling	rustc_symbol_mangling: Address all rustc::potential_query_instability lints	2023-12-05 06:41:23 +01:00
rustc_target	Auto merge of #117072 - betrusted-io:unwinding-crate-support, r=cuviper	2023-12-06 02:23:01 +00:00
rustc_trait_selection	Rollup merge of #116496 - estebank:question-method-chain-context, r=compiler-errors	2023-12-06 17:21:56 +01:00
rustc_traits	Auto merge of #118120 - compiler-errors:closure-kind, r=lcnr	2023-11-22 21:09:01 +00:00
rustc_transmute	Update itertools to 0.11.	2023-11-22 08:13:21 +11:00
rustc_ty_utils	Rollup merge of #118573 - petrochenkov:pathdatakind, r=TaKO8Ki	2023-12-04 21:19:45 +09:00
rustc_type_ir	Auto merge of #118120 - compiler-errors:closure-kind, r=lcnr	2023-11-22 21:09:01 +00:00
stable_mir	Add more information to stable Instance	2023-12-01 16:22:06 -08:00