de-fuzz: make sure recursion stack always has a valid start location for the recursion.

2017-02-21 19:38:36 +00:00
parent b0a83dc8d9
commit b65bf1b459
2 changed files with 2 additions and 0 deletions
--- a/include/boost/regex/v4/perl_matcher_non_recursive.hpp
+++ b/include/boost/regex/v4/perl_matcher_non_recursive.hpp
@ -1719,6 +1719,7 @@ bool perl_matcher<BidiIterator, Allocator, traits>::unwind_recursion(bool r)
      recursion_stack.back().idx = pmp->recursion_id;
      recursion_stack.back().preturn_address = pmp->preturn_address;
      recursion_stack.back().results = pmp->results;
+      recursion_stack.back().location_of_start = position;
   }
   boost::BOOST_REGEX_DETAIL_NS::inplace_destroy(pmp++);
   m_backup_state = pmp;