From 2fc1ca4e9c0b4827cff565342c5b9c50529a6cfc Mon Sep 17 00:00:00 2001
From: Adam Wulkiewicz <adam.wulkiewicz@gmail.com>
Date: Mon, 31 Mar 2014 09:41:17 +0200
Subject: [PATCH] [relate] Fix for_each_disjoint_geometry_if return value for
 Multi Geometries

Fix GCC warnings.
---
 .../algorithms/detail/overlay/get_turn_info_for_endpoint.hpp | 5 ++++-
 .../geometry/algorithms/detail/overlay/get_turn_info_la.hpp  | 4 ++--
 .../geometry/algorithms/detail/relate/follow_helpers.hpp     | 5 +----
 .../geometry/algorithms/detail/relate/linear_linear.hpp      | 2 +-
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/boost/geometry/algorithms/detail/overlay/get_turn_info_for_endpoint.hpp b/include/boost/geometry/algorithms/detail/overlay/get_turn_info_for_endpoint.hpp
index d960dd0aa..3ecb80f69 100644
--- a/include/boost/geometry/algorithms/detail/overlay/get_turn_info_for_endpoint.hpp
+++ b/include/boost/geometry/algorithms/detail/overlay/get_turn_info_for_endpoint.hpp
@@ -134,7 +134,7 @@ struct get_turn_info_for_endpoint
                              bool is_q_first, bool is_q_last,
                              TurnInfo const& tp_model,
                              IntersectionResult const& result,
-                             method_type method,
+                             method_type /*method*/,
                              OutputIterator out)
     {
         std::size_t ip_count = result.template get<0>().count;
@@ -389,6 +389,9 @@ struct get_turn_info_for_endpoint
                                        IntersectionResult const& result,
                                        operation_type & op1, operation_type & op2)
     {
+        boost::ignore_unused_variable_warning(ip);
+        boost::ignore_unused_variable_warning(tp_model);
+
         if ( !first2 && !last2 )
         {
             if ( first1 )
diff --git a/include/boost/geometry/algorithms/detail/overlay/get_turn_info_la.hpp b/include/boost/geometry/algorithms/detail/overlay/get_turn_info_la.hpp
index 73b811aea..8034c5db8 100644
--- a/include/boost/geometry/algorithms/detail/overlay/get_turn_info_la.hpp
+++ b/include/boost/geometry/algorithms/detail/overlay/get_turn_info_la.hpp
@@ -364,7 +364,7 @@ struct get_turn_info_linear_areal
         method_type m_method;
     };
 
-    static inline void replace_operations_i(operation_type & op0, operation_type & op1)
+    static inline void replace_operations_i(operation_type & /*op0*/, operation_type & op1)
     {
         // assuming Linear is always the first one
         op1 = operation_union;
@@ -385,7 +385,7 @@ struct get_turn_info_linear_areal
                             bool is_q_first, bool is_q_last,
                             TurnInfo const& tp_model,
                             IntersectionResult const& result,
-                            method_type method,
+                            method_type /*method*/,
                             OutputIterator out)
     {
         namespace ov = overlay;
diff --git a/include/boost/geometry/algorithms/detail/relate/follow_helpers.hpp b/include/boost/geometry/algorithms/detail/relate/follow_helpers.hpp
index 10977f8b4..eed9a8228 100644
--- a/include/boost/geometry/algorithms/detail/relate/follow_helpers.hpp
+++ b/include/boost/geometry/algorithms/detail/relate/follow_helpers.hpp
@@ -70,20 +70,17 @@ struct for_each_disjoint_geometry_if<OpId, Geometry, Tag, true>
     {
         typedef typename boost::range_iterator<Geometry const>::type iterator;
 
-        bool found = false;
-
         // O(N)
         // check predicate for each contained geometry without generated turn
         for ( iterator it = boost::begin(geometry) ;
               it != boost::end(geometry) ; ++it )
         {
-            found = true;
             bool cont = pred(*it);
             if ( !cont )
                 break;
         }
         
-        return true;
+        return !boost::empty(geometry);
     }
 
     template <typename TurnIt, typename Pred>
diff --git a/include/boost/geometry/algorithms/detail/relate/linear_linear.hpp b/include/boost/geometry/algorithms/detail/relate/linear_linear.hpp
index ddc7332e2..ba9e0f137 100644
--- a/include/boost/geometry/algorithms/detail/relate/linear_linear.hpp
+++ b/include/boost/geometry/algorithms/detail/relate/linear_linear.hpp
@@ -335,7 +335,7 @@ struct linear_linear
         void apply(Result & res,
                    TurnIt first, TurnIt it, TurnIt last,
                    Geometry const& geometry,
-                   OtherGeometry const& other_geometry,
+                   OtherGeometry const& /*other_geometry*/,
                    BoundaryChecker const& boundary_checker,
                    OtherBoundaryChecker const& other_boundary_checker)
         {