[Boost-commit] svn:boost r58988 - sandbox/gtl/boost/polygon/detail

Subject: [Boost-commit] svn:boost r58988 - sandbox/gtl/boost/polygon/detail
From: lucanus.j.simonson_at_[hidden]
Date: 2010-01-13 17:21:25

Author: ljsimons
Date: 2010-01-13 17:21:24 EST (Wed, 13 Jan 2010)
New Revision: 58988
URL: http://svn.boost.org/trac/boost/changeset/58988

Log:
fix for crash on empty input to property merge algorithm
Text files modified: 
   sandbox/gtl/boost/polygon/detail/scan_arbitrary.hpp |     1 +                                       
   1 files changed, 1 insertions(+), 0 deletions(-)

Modified: sandbox/gtl/boost/polygon/detail/scan_arbitrary.hpp
==============================================================================
--- sandbox/gtl/boost/polygon/detail/scan_arbitrary.hpp	(original)
+++ sandbox/gtl/boost/polygon/detail/scan_arbitrary.hpp	2010-01-13 17:21:24 EST (Wed, 13 Jan 2010)
@@ -1535,6 +1535,7 @@
     //or std::map<std::vector<property_type>, polygon_set_type>
     template <typename result_type>
     void merge(result_type& result) {
+      if(pmd.empty()) return;
       //intersect data
       property_merge_data tmp_pmd;
       line_intersection<Unit>::validate_scan(tmp_pmd, pmd.begin(), pmd.end());