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. 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
diff --git a/include/regex b/include/regex index 312ca11..36d5677 100644 --- a/include/regex +++ b/include/regex
@@ -5773,7 +5773,8 @@ { __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; 