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21 lines
756 B
Rust
21 lines
756 B
Rust
// compile-flags:--test
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// comments, both doc comments and regular ones, used to trick rustdoc's doctest parser into
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// thinking that everything after it was part of the regular program. combined with the librustc_ast
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// parser loop failing to detect the manual main function, it would wrap everything in `fn main`,
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// which would cause the doctest to fail as the "extern crate" declaration was no longer valid.
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// oddly enough, it would pass in 2018 if a crate was in the extern prelude. see
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// https://github.com/rust-lang/rust/issues/56727
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//! ```
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//! // crate: proc-macro-test
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//! //! this is a test
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//!
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//! // used to pull in proc-macro specific items
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//! extern crate proc_macro;
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//!
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//! use proc_macro::TokenStream;
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//!
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//! # fn main() {}
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//! ```
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