mirror of https://github.com/rust-lang/rust
36 lines
724 B
Rust
36 lines
724 B
Rust
#![crate_type = "lib"]
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fn lbv_macro_test_hygiene_respected() {
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macro_rules! mac2 {
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($val:expr) => {
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break 'a $val; //~ ERROR undeclared label `'a` [E0426]
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};
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}
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let x: u8 = 'a: {
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'b: {
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if true {
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mac2!(2);
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}
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};
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0
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};
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assert_eq!(x, 2);
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macro_rules! mac3 {
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($val:expr) => {
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'a: {
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$val
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}
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};
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}
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let x: u8 = mac3!('b: {
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if true {
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break 'a 3; //~ ERROR undeclared label `'a` [E0426]
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}
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0
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});
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assert_eq!(x, 3);
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let x: u8 = mac3!(break 'a 4); //~ ERROR undeclared label `'a` [E0426]
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assert_eq!(x, 4);
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}
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