32 lines
553 B
Rust
32 lines
553 B
Rust
// Check that we do not ICE when compiling this
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// macro, which reuses the expression `$id`
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#[feature(macro_rules)];
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struct Foo {
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a: int
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}
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pub enum Bar {
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Bar1, Bar2(int, ~Bar),
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}
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impl Foo {
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fn elaborate_stm(&mut self, s: ~Bar) -> ~Bar {
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macro_rules! declare(
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($id:expr, $rest:expr) => ({
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self.check_id($id);
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~Bar2($id, $rest)
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})
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);
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match s {
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~Bar2(id, rest) => declare!(id, self.elaborate_stm(rest)),
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_ => fail!()
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}
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}
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fn check_id(&mut self, s: int) { fail!() }
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}
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pub fn main() { }
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