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Rollup merge of #70540 - jonas-schievink:link-attr-template, r=varkor

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#[link]: mention wasm_import_module instead of cfg

`#[link(cfg)]` is perma-unstable and is not documented anywhere else. It makes more sense to mention `wasm_import_module` here since it's stable.

This makes it harder to hit https://github.com/rust-lang/rust/issues/70538 (if it weren't for this text, I wouldn't even know this feature existed).
This commit is contained in:
Dylan DPC 2020-03-29 21:23:53 +02:00 committed by GitHub
commit 1bf4873aac
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2 changed files with 3 additions and 3 deletions
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2
src/librustc_feature/builtin_attrs.rs
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@ -220,7 +220,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
// ABI, linking, symbols, and FFI
ungated!(
link, Whitelisted,
template!(List: r#"name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ cfg = "...""#),
template!(List: r#"name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...""#),
),
ungated!(link_name, Whitelisted, template!(NameValueStr: "name")),
ungated!(no_link, Normal, template!(Word)),

4
src/test/ui/malformed/malformed-regressions.stderr
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@ -26,7 +26,7 @@ LL | #[inline = ""]
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
error: attribute must be of the form `#[link(name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ cfg = "...")]`
error: attribute must be of the form `#[link(name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...")]`
--> $DIR/malformed-regressions.rs:7:1
|
LL | #[link]
@ -35,7 +35,7 @@ LL | #[link]
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #57571 <https://github.com/rust-lang/rust/issues/57571>
error: attribute must be of the form `#[link(name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ cfg = "...")]`
error: attribute must be of the form `#[link(name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...")]`
--> $DIR/malformed-regressions.rs:9:1
|
LL | #[link = ""]