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Rollup merge of #103418 - Aaron1011:macro-semicolon-future-incompat, r=davidtwco
Add `SEMICOLON_IN_EXPRESSIONS_FROM_MACROS` to future-incompat report See #79813 for a discussion of this lint. This has been warn-by-default for over a year, so adding it to the future-incompat report should help to find libraries that haven't yet updated.
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‎compiler/rustc_lint_defs/src/builtin.rs‎

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@@ -2948,6 +2948,7 @@ declare_lint! {
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"trailing semicolon in macro body used as expression",
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@future_incompatible = FutureIncompatibleInfo {
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reference: "issue #79813 <https://github.com/rust-lang/rust/issues/79813>",
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reason: FutureIncompatibilityReason::FutureReleaseErrorReportNow,
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};
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}
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‎tests/ui/lint/semicolon-in-expressions-from-macros/semicolon-in-expressions-from-macros.stderr‎

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@@ -46,3 +46,140 @@ LL | let _ = #[allow(semicolon_in_expressions_from_macros)] foo!(allow_does_
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warning: 3 warnings emitted
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Future incompatibility report: Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | foo!(first)
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| ----------- in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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= note: macro invocations at the end of a block are treated as expressions
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= note: to ignore the value produced by the macro, add a semicolon after the invocation of `foo`
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:24:13
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|
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LL | #[allow(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | let _ = foo!(second);
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| ------------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:29:13
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|
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LL | #[allow(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | let _ = foo!(third);
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| ----------- in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:32:13
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|
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LL | #[allow(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | let _ = foo!(fourth);
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| ------------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:37:13
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|
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LL | #[allow(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | foo!(warn_in_block)
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| ------------------- in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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= note: macro invocations at the end of a block are treated as expressions
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= note: to ignore the value produced by the macro, add a semicolon after the invocation of `foo`
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:4:9
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|
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LL | #![warn(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | let _ = foo!(warn_in_expr);
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| ------------------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:4:9
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|
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LL | #![warn(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/semicolon-in-expressions-from-macros.rs:9:13
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|
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LL | true;
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| ^
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...
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LL | let _ = #[allow(semicolon_in_expressions_from_macros)] foo!(allow_does_not_work);
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| ------------------------- in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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note: the lint level is defined here
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--> $DIR/semicolon-in-expressions-from-macros.rs:4:9
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|
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LL | #![warn(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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‎tests/ui/lint/semicolon-in-expressions-from-macros/warn-semicolon-in-expressions-from-macros.stderr‎

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@@ -14,3 +14,18 @@ LL | _ => foo!()
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warning: 1 warning emitted
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Future incompatibility report: Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/warn-semicolon-in-expressions-from-macros.rs:6:13
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|
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LL | true;
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| ^
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...
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LL | _ => foo!()
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| ------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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= note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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‎tests/ui/macros/issue-84195-lint-anon-const.stderr‎

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@@ -18,3 +18,22 @@ LL | #![deny(semicolon_in_expressions_from_macros)]
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error: aborting due to previous error
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Future incompatibility report: Future breakage diagnostic:
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error: trailing semicolon in macro used in expression position
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--> $DIR/issue-84195-lint-anon-const.rs:8:14
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|
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LL | () => { 0; };
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| ^
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...
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LL | let val: [u8; len!()] = [];
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| ------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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note: the lint level is defined here
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--> $DIR/issue-84195-lint-anon-const.rs:5:9
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|
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LL | #![deny(semicolon_in_expressions_from_macros)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: this error originates in the macro `len` (in Nightly builds, run with -Z macro-backtrace for more info)
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‎tests/ui/macros/lint-trailing-macro-call.stderr‎

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@@ -16,3 +16,20 @@ LL | expand_it!()
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warning: 1 warning emitted
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Future incompatibility report: Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/lint-trailing-macro-call.rs:9:25
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|
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LL | #[cfg(FALSE)] 25;
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| ^
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...
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LL | expand_it!()
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| ------------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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= note: macro invocations at the end of a block are treated as expressions
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= note: to ignore the value produced by the macro, add a semicolon after the invocation of `expand_it`
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= note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
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= note: this warning originates in the macro `expand_it` (in Nightly builds, run with -Z macro-backtrace for more info)
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‎tests/ui/macros/macro-context.stderr‎

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@@ -82,3 +82,18 @@ error: aborting due to 6 previous errors; 1 warning emitted
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Some errors have detailed explanations: E0412, E0425.
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For more information about an error, try `rustc --explain E0412`.
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Future incompatibility report: Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/macro-context.rs:3:15
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|
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LL | () => ( i ; typeof );
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| ^
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...
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LL | let i = m!();
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| ---- in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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= note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
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= note: this warning originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
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‎tests/ui/macros/macro-in-expression-context.stderr‎

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@@ -31,3 +31,20 @@ LL | foo!()
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error: aborting due to previous error; 1 warning emitted
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Future incompatibility report: Future breakage diagnostic:
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warning: trailing semicolon in macro used in expression position
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--> $DIR/macro-in-expression-context.rs:5:29
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|
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LL | assert_eq!("A", "A");
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| ^
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...
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LL | foo!()
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| ------ in this macro invocation
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|
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= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
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= note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
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= note: macro invocations at the end of a block are treated as expressions
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= note: to ignore the value produced by the macro, add a semicolon after the invocation of `foo`
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= note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
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= note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)
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