22 lines
565 B
Rust
22 lines
565 B
Rust
// Regression test for issue #115780.
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// Ensure that we don't emit a parse error for the token sequence `Ident "<" Ty` in pattern position
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// if we are inside a macro call since it can be valid input for a subsequent macro rule.
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// See also #103534.
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// check-pass
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macro_rules! mdo {
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($p: pat =<< $e: expr ; $( $t: tt )*) => {
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$e.and_then(|$p| mdo! { $( $t )* })
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};
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(ret<$ty: ty> $e: expr;) => { Some::<$ty>($e) };
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}
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fn main() {
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mdo! {
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x_val =<< Some(0);
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y_val =<< Some(1);
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ret<(i32, i32)> (x_val, y_val);
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};
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}
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