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Fix regression #61475

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estebank committed Jun 3, 2019
1 parent 61d286e commit 288202ec29e125efe5ec8c1a031c9a2370d2f7b7
Showing with 11 additions and 7 deletions.
  1. +11 −7 src/libsyntax/parse/parser.rs
@@ -628,10 +628,10 @@ impl<'a> Parser<'a> {
}
_ => {
Err(if self.prev_token_kind == PrevTokenKind::DocComment {
self.span_fatal_err(self.prev_span, Error::UselessDocComment)
} else {
self.expected_ident_found()
})
self.span_fatal_err(self.prev_span, Error::UselessDocComment)
} else {
self.expected_ident_found()
})
}
}
}
@@ -1660,8 +1660,8 @@ impl<'a> Parser<'a> {
path = self.parse_path(PathStyle::Type)?;
path_span = path_lo.to(self.prev_span);
} else {
path = ast::Path { segments: Vec::new(), span: DUMMY_SP };
path_span = self.span.to(self.span);
path = ast::Path { segments: Vec::new(), span: path_span };
}

// See doc comment for `unmatched_angle_bracket_count`.
@@ -2847,7 +2847,11 @@ impl<'a> Parser<'a> {
// want to keep their span info to improve diagnostics in these cases in a later stage.
(true, Some(AssocOp::Multiply)) | // `{ 42 } *foo = bar;` or `{ 42 } * 3`
(true, Some(AssocOp::Subtract)) | // `{ 42 } -5`
(true, Some(AssocOp::Add)) => { // `{ 42 } + 42
(true, Some(AssocOp::LAnd)) | // `{ 42 } &&x` (#61475)
(true, Some(AssocOp::Add)) // `{ 42 } + 42
// If the next token is a keyword, then the tokens above *are* unambiguously incorrect:
// `if x { a } else { b } && if y { c } else { d }`
if !self.look_ahead(1, |t| t.is_reserved_ident()) => {
// These cases are ambiguous and can't be identified in the parser alone
let sp = self.sess.source_map().start_point(self.span);
self.sess.ambiguous_block_expr_parse.borrow_mut().insert(sp, lhs.span);
@@ -5298,7 +5302,7 @@ impl<'a> Parser<'a> {
let mut where_clause = WhereClause {
id: ast::DUMMY_NODE_ID,
predicates: Vec::new(),
span: DUMMY_SP,
span: self.prev_span.to(self.prev_span),
};

if !self.eat_keyword(kw::Where) {

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