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Bill Fisher: This patch fixes a bug where regex_iterator doesn't indicate when it's restarting in the middle of a string. This bug causes /^a/ to match in the middle of the string "aaaaaaa", during iteration.

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My patch uses  to communicate when  is false.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185950 91177308-0d34-0410-b5e6-96231b3b80d8
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Howard Hinnant
2013-07-09 17:29:09 +00:00
parent 171771a9f5
commit 7670f7d1ed
2 changed files with 40 additions and 1 deletions
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3
include/regex
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@@ -5773,7 +5773,8 @@ basic_regex<_CharT, _Traits>::__search(
{
__m.__init(1 + mark_count(), __first, __last,
__flags & regex_constants::__no_update_pos);
if (__match_at_start(__first, __last, __m, __flags, true))
if (__match_at_start(__first, __last, __m, __flags,
!(__flags & regex_constants::__no_update_pos)))
{
__m.__prefix_.second = __m[0].first;
__m.__prefix_.matched = __m.__prefix_.first != __m.__prefix_.second;