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-rw-r--r--src/engine/machina/Problem.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/engine/machina/Problem.hpp b/src/engine/machina/Problem.hpp
index fcb7874..e25c5a1 100644
--- a/src/engine/machina/Problem.hpp
+++ b/src/engine/machina/Problem.hpp
@@ -29,6 +29,7 @@ namespace Machina {
class Problem : public Eugene::Problem<Machine> {
public:
Problem(TimeUnit unit, const std::string& target_midi, SharedPtr<Machine> seed = SharedPtr<Machine>());
+ virtual ~Problem() {}
void seed(SharedPtr<Machine> parent) { _seed = parent; }