X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=tbb%2Finclude%2Ftbb%2Fparallel_for_each.h;h=59200b1ebb1d33d8395abb817f3f7428a26b8aed;hb=4c96b4064a92f65beead3cb2453d727187bed40f;hp=e59ee76bf807c61139301ef085fef9e9de76e317;hpb=46ab0514ba58ee00183ff0584c7ea7c9e3d76494;p=casparcg

diff --git a/tbb/include/tbb/parallel_for_each.h b/tbb/include/tbb/parallel_for_each.h
index e59ee76bf..59200b1eb 100644
--- a/tbb/include/tbb/parallel_for_each.h
+++ b/tbb/include/tbb/parallel_for_each.h
@@ -43,7 +43,7 @@ namespace internal {
         parallel_for_each_body(const Function &_func) : my_func(_func) {}
         parallel_for_each_body(const parallel_for_each_body<Function, Iterator> &_caller) : my_func(_caller.my_func) {}
 
-        void operator() ( typename std::iterator_traits<Iterator>::value_type& value ) const {
+        void operator() ( typename std::iterator_traits<Iterator>::reference value ) const {
             my_func(value);
         }
     };
@@ -55,18 +55,18 @@ namespace internal {
 //@{
 //! Calls function f for all items from [first, last) interval using user-supplied context
 /** @ingroup algorithms */
+#if __TBB_TASK_GROUP_CONTEXT
 template<typename InputIterator, typename Function>
 void parallel_for_each(InputIterator first, InputIterator last, const Function& f, task_group_context &context) {
     internal::parallel_for_each_body<Function, InputIterator> body(f);
-
     tbb::parallel_do (first, last, body, context);
 }
+#endif /* __TBB_TASK_GROUP_CONTEXT */
 
 //! Uses default context
 template<typename InputIterator, typename Function>
 void parallel_for_each(InputIterator first, InputIterator last, const Function& f) {
     internal::parallel_for_each_body<Function, InputIterator> body(f);
-
     tbb::parallel_do (first, last, body);
 }