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54 lines
1.3 KiB
Rust
54 lines
1.3 KiB
Rust
// aux-build:test-macros.rs
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// gate-test-proc_macro_hygiene
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#![feature(stmt_expr_attributes)]
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#[macro_use]
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extern crate test_macros;
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fn _test_inner() {
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#![empty_attr] //~ ERROR: inner macro attributes are unstable
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}
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mod _test2_inner {
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#![empty_attr] //~ ERROR: inner macro attributes are unstable
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}
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#[empty_attr = "y"] //~ ERROR: key-value macro attributes are not supported
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fn _test3() {}
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fn attrs() {
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// Statement, item
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#[empty_attr] // OK
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struct S;
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// Statement, macro
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#[empty_attr] //~ ERROR: custom attributes cannot be applied to statements
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println!();
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// Statement, semi
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#[empty_attr] //~ ERROR: custom attributes cannot be applied to statements
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S;
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// Statement, local
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#[empty_attr] //~ ERROR: custom attributes cannot be applied to statements
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let _x = 2;
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// Expr
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let _x = #[identity_attr] 2; //~ ERROR: custom attributes cannot be applied to expressions
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// Opt expr
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let _x = [#[identity_attr] 2]; //~ ERROR: custom attributes cannot be applied to expressions
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// Expr macro
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let _x = #[identity_attr] println!();
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//~^ ERROR: custom attributes cannot be applied to expressions
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}
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fn test_case() {
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#![test] //~ ERROR inner macro attributes are unstable
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//~| WARN this was previously accepted
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}
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fn main() {}
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