diff options
Diffstat (limited to 'layout')
| -rw-r--r-- | layout/style/nsCSSParser.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/layout/style/nsCSSParser.cpp b/layout/style/nsCSSParser.cpp index 7775df29cd..c81de2d9f6 100644 --- a/layout/style/nsCSSParser.cpp +++ b/layout/style/nsCSSParser.cpp @@ -5492,8 +5492,15 @@ CSSParserImpl::ParseSelectorList(nsCSSSelectorList*& aListHead, } break; } - // add new list to the end of the selector list - list->mNext = newList; + // Replace the list head if: it's empty and we're a forgiving selector + // list. Otherwise, add the new list to the end of the selector list. + if (aIsForgiving && !aListHead->mSelectors) { + MOZ_ASSERT(newList->mSelectors, + "replacing empty list head with an empty selector list?"); + aListHead = newList; + } else { + list->mNext = newList; + } list = newList; continue; } else if (aStopChar == tk->mSymbol && aStopChar != char16_t(0)) { |