fix build and support interpreter frames inside getCurrentPythonLine()

src/codegen/irgen/irgenerator.cpp

@@ -299,7 +299,7 @@ private:
     }
 
     void checkAndPropagateCapiException(const UnwindInfo& unw_info, llvm::Value* returned_val, llvm::Value* exc_val,
-                                        bool double_check) {
+                                        bool double_check) override {
         assert(!double_check); // need to call PyErr_Occurred
 
         llvm::BasicBlock* normal_dest

src/codegen/unwinding.cpp

@@ -1188,8 +1188,8 @@ std::string getCurrentPythonLine() {
     if (frame_iter.get()) {
         std::ostringstream stream;
 
-        auto* cf = frame_iter->getCF();
-        auto source = cf->clfunc->source.get();
+        auto* clfunc = frame_iter->getCL();
+        auto source = clfunc->source.get();
 
         auto current_stmt = frame_iter->getCurrentStatement();