45 lines
881 B
Rust
45 lines
881 B
Rust
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fn main() {}
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macro_rules! expand_to_enum {
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() => {
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enum BadE {}
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//~^ ERROR enum is not supported in `trait`s or `impl`s
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//~| ERROR enum is not supported in `trait`s or `impl`s
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//~| ERROR enum is not supported in `extern` blocks
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};
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}
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macro_rules! mac_impl {
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($($i:item)*) => {
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struct S;
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impl S { $($i)* }
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}
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}
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mac_impl! {
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struct BadS; //~ ERROR struct is not supported in `trait`s or `impl`s
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expand_to_enum!();
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}
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macro_rules! mac_trait {
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($($i:item)*) => {
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trait T { $($i)* }
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}
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}
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mac_trait! {
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struct BadS; //~ ERROR struct is not supported in `trait`s or `impl`s
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expand_to_enum!();
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}
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macro_rules! mac_extern {
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($($i:item)*) => {
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extern "C" { $($i)* }
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}
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}
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mac_extern! {
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struct BadS; //~ ERROR struct is not supported in `extern` blocks
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expand_to_enum!();
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}
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