cxx features: add check for override

2 files changed, 21 insertions, 0 deletions

diff --git a/Source/Checks/cm_cxx_features.cmake b/Source/Checks/cm_cxx_features.cmake
index e550e64..18dbaf8 100644
--- a/Source/Checks/cm_cxx_features.cmake
+++ b/Source/Checks/cm_cxx_features.cmake
@@ -32,6 +32,7 @@ function(cm_check_cxx_feature name)
 endfunction()
 
 if(CMAKE_CXX_STANDARD)
+  cm_check_cxx_feature(override)
   cm_check_cxx_feature(unordered_map)
   cm_check_cxx_feature(unordered_set)
 endif()
diff --git a/Source/Checks/cm_cxx_override.cxx b/Source/Checks/cm_cxx_override.cxx
new file mode 100644
index 0000000..9395a0a
--- /dev/null
+++ b/Source/Checks/cm_cxx_override.cxx
@@ -0,0 +1,20 @@
+struct Foo
+{
+  virtual int test() const = 0;
+};
+
+struct Bar : Foo
+{
+  int test() const override { return 0; }
+};
+
+int test(Foo const& foo)
+{
+  return foo.test();
+}
+
+int main()
+{
+  Bar const bar;
+  return test(bar);
+}