commit e00d350bbdf86bbcd3ed84aebd7c007b12ebd5a1
author Marshall Clow <mclow.lists@gmail.com> Wed Jul 05 16:37:19 2017 +0000
committer Marshall Clow <mclow.lists@gmail.com> Wed Jul 05 16:37:19 2017 +0000
tree 30d9157868a3b55de0e3fa1b81dc20f8abc1fba6
parent 530ad8eb203ccb4ae1bcdd72c4f4205c2a9cf3d8

Fix a bug in regex_Iterator where it would report zero-length matches forever. Reported as http://llvm.org/PR33681. Thanks to Karen Arutyunov for the report.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@307171 91177308-0d34-0410-b5e6-96231b3b80d8

include/regex

diff --git a/include/regex b/include/regex
index 443c2e3..77ca648 100644
--- a/include/regex
+++ b/include/regex
@@ -6142,7 +6142,7 @@
 {
     __flags_ |= regex_constants::__no_update_pos;
     _BidirectionalIterator __start = __match_[0].second;
-    if (__match_.empty())
+    if (__match_[0].first == __match_[0].second)
     {
         if (__start == __end_)
         {