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Fix the issue of wrong diagnosis for extern pub fn

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This commit is contained in:
yukang 2023-07-05 16:25:46 +08:00
parent b7bc6f88ac
commit f25463e848
3 changed files with 25 additions and 1 deletions
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6
compiler/rustc_parse/src/parser/item.rs
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@ -2182,7 +2182,11 @@ impl<'a> Parser<'a> {
// `extern ABI fn`
|| self.check_keyword_case(kw::Extern, case)
&& self.look_ahead(1, |t| t.can_begin_literal_maybe_minus())
&& self.look_ahead(2, |t| t.is_keyword_case(kw::Fn, case))
&& (self.look_ahead(2, |t| t.is_keyword_case(kw::Fn, case)) ||
// this branch is only for better diagnostic in later, `pub` is not allowed here
(self.may_recover()
&& self.look_ahead(2, |t| t.is_keyword(kw::Pub))
&& self.look_ahead(3, |t| t.is_keyword_case(kw::Fn, case))))
}
/// Parses all the "front matter" (or "qualifiers") for a `fn` declaration,