Add virtual destructors on base classes.

2 files changed, 3 insertions, 0 deletions

diff --git a/libevmasm/ConstantOptimiser.h b/libevmasm/ConstantOptimiser.h
index 9b60b26b..f0deb387 100644
--- a/libevmasm/ConstantOptimiser.h
+++ b/libevmasm/ConstantOptimiser.h
@@ -67,6 +67,7 @@ public:
 
 	explicit ConstantOptimisationMethod(Params const& _params, u256 const& _value):
 		m_params(_params), m_value(_value) {}
+	virtual ~ConstantOptimisationMethod() = default;
 	virtual bigint gasNeeded() const = 0;
 	/// Executes the method, potentially appending to the assembly and returns a vector of
 	/// assembly items the constant should be relpaced with in one sweep.
diff --git a/libevmasm/PeepholeOptimiser.h b/libevmasm/PeepholeOptimiser.h
index a74cc8b3..a651143d 100644
--- a/libevmasm/PeepholeOptimiser.h
+++ b/libevmasm/PeepholeOptimiser.h
@@ -34,6 +34,7 @@ using AssemblyItems = std::vector<AssemblyItem>;
 class PeepholeOptimisationMethod
 {
 public:
+	virtual ~PeepholeOptimisationMethod() = default;
 	virtual size_t windowSize() const;
 	virtual bool apply(AssemblyItems::const_iterator _in, std::back_insert_iterator<AssemblyItems> _out);
 };
@@ -42,6 +43,7 @@ class PeepholeOptimiser
 {
 public:
 	explicit PeepholeOptimiser(AssemblyItems& _items): m_items(_items) {}
+	virtual ~PeepholeOptimiser() = default;
 
 	bool optimise();