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William Fisher: A bug in __lookahead::exec causes /(?=^)b/ to match ab. When makes a recursive call to , it passes true for the value of . This causes a beginning-of-line anchor (^) inside a lookahead assertion to match anywhere in the text. This fixes http://llvm.org/bugs/show_bug.cgi?id=11118

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185196 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2013-06-28 19:11:23 +00:00
parent 918f2a80ab
commit e57b7c445b
2 changed files with 29 additions and 1 deletions
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2
include/regex
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@@ -2921,7 +2921,7 @@ __lookahead<_CharT, _Traits>::__exec(__state& __s) const
bool __matched = __exp_.__match_at_start_ecma(__s.__current_, __s.__last_,
__m,
__s.__flags_ | regex_constants::match_continuous,
true);
__s.__at_first_ && __s.__current_ == __s.__first_);
if (__matched != __invert_)
{
__s.__do_ = __state::__accept_but_not_consume;