diff options
| -rw-r--r-- | components/selectors/parser.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/components/selectors/parser.rs b/components/selectors/parser.rs index 1548a6fdcab..74f4a48de04 100644 --- a/components/selectors/parser.rs +++ b/components/selectors/parser.rs @@ -2207,7 +2207,12 @@ where "nth-last-of-type" => return parse_nth_pseudo_class(parser, input, state, Component::NthLastOfType), "is" if parser.parse_is_and_where() => return parse_is_or_where(parser, input, state, Component::Is), "where" if parser.parse_is_and_where() => return parse_is_or_where(parser, input, state, Component::Where), - "host" => return Ok(Component::Host(Some(parse_inner_compound_selector(parser, input, state)?))), + "host" => { + if !state.allows_tree_structural_pseudo_classes() { + return Err(input.new_custom_error(SelectorParseErrorKind::InvalidState)); + } + return Ok(Component::Host(Some(parse_inner_compound_selector(parser, input, state)?))); + }, "not" => { if state.intersects(SelectorParsingState::INSIDE_NEGATION) { return Err(input.new_custom_error( |