rust/tests/ui/macros/macro-invalid-fragment-spec.rs

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macro_rules! foo(
    ($x:foo) => ()
    //~^ ERROR invalid fragment specifier
);

fn main() {
    foo!(foo);
}
Make sure that macros that didn't pass LHS checking are not expanded. This avoids duplicate errors for things like invalid fragment specifiers, or parsing errors for ambiguous macros. Fixes #29231. 2016-05-18 13:08:19 +00:00			`macro_rules! foo(`
			`($x:foo) => ()`
			`//~^ ERROR invalid fragment specifier`
			`);`

			`fn main() {`
			`foo!(foo);`
			`}`