Fix warning about unused variable

boostorg · Mar 29, 2019 · 89ce280 · 89ce280
1 parent 715d760
commit 89ce280
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/include/boost/gil/concepts/color_base.hpp b/include/boost/gil/concepts/color_base.hpp
@@ -13,6 +13,7 @@
 #include <boost/gil/concepts/concept_check.hpp>
 #include <boost/gil/concepts/fwd.hpp>
 
+#include <boost/core/ignore_unused.hpp>
 #include <boost/type_traits.hpp>
 
 #if defined(BOOST_CLANG)
@@ -237,6 +238,7 @@ struct HomogeneousColorBaseConcept
 
         using R0 = typename kth_element_const_reference_type<ColorBase, 0>::type;
         R0 r = dynamic_at_c(cb, 0);
+        boost::ignore_unused(r);
     }
     ColorBase cb;
 };
@@ -259,6 +261,7 @@ struct MutableHomogeneousColorBaseConcept
         gil_function_requires<HomogeneousColorBaseConcept<ColorBase>>();
         using R0 = typename kth_element_reference_type<ColorBase, 0>::type;
         R0 r = dynamic_at_c(cb, 0);
+        boost::ignore_unused(r);
         dynamic_at_c(cb, 0) = dynamic_at_c(cb, 0);
     }
     ColorBase cb;