Fix missing virtual destructors

README.md

@@ -100,7 +100,7 @@ $ git submodule add [email protected]:ethz-asl/lpp.git
 ```cmake
 add_subdirectory(my_submodule_dir/lpp)
 add_executable(my_executable main.cpp)
-target_link_libraries(my_executable Log++)
+target_link_libraries(my_executable lpp)
 ```
 
 3. To update Log++ to the latest commit, execute the following commands:

include/log++.h

@@ -671,6 +671,7 @@ class InternalCondLog : public InternalLog {
       : InternalLog(severity) {
     should_print_ = cond;
   }
+  ~InternalCondLog() override = default;
 };
 
 
@@ -679,12 +680,14 @@ class LogPolicyBase {
   virtual void update() = 0;
   [[nodiscard]] virtual bool shouldLog() const = 0;
   virtual void onLog() {};
+  virtual ~LogPolicyBase() = default;
 };
 
 template<typename T>
 class LogPolicy : public LogPolicyBase {
 public:
   explicit LogPolicy(T max) : max_(max) {}
+  ~LogPolicy() override = default;
 protected:
   T max_{0};
 };
@@ -716,7 +719,7 @@ class OccasionPolicy : public CountableLogPolicy {
     return should_log_;
   }
 
-  virtual ~OccasionPolicy() = default;
+  ~OccasionPolicy() override = default;
  private:
   bool should_log_{false};
 };
@@ -738,7 +741,7 @@ class FirstNOccurrencesPolicy : public CountableLogPolicy {
     return !is_n_occurences_reached;
   }
 
-  virtual ~FirstNOccurrencesPolicy() = default;
+  ~FirstNOccurrencesPolicy() override = default;
  private:
   bool is_n_occurences_reached = false;
 };
@@ -764,7 +767,7 @@ class TimePolicy : public LogPolicy<float> {
     last_ = now_;
   }
 
-  virtual ~TimePolicy() = default;
+  ~TimePolicy() override = default;
  private:
   long now_{0};
   long last_{0};

package.xml

@@ -3,7 +3,7 @@
   <name>lpp</name>
   <version>0.1.0</version>
   <description>Log++ Logging framework</description>
-  <maintainer email="[email protected]">4c3y</maintainer>
+  <maintainer email="[email protected]">4c3y</maintainer>
   <license>BSD</license>
   <buildtool_depend>catkin</buildtool_depend>
   <depend>roscpp</depend>