1 files changed, 7 insertions, 1 deletions
diff --git a/src/CaseFolder.h b/src/CaseFolder.h
index 45abe4d8f..4f16ed69c 100644
--- a/src/CaseFolder.h
+++ b/src/CaseFolder.h
@@ -12,7 +12,13 @@ namespace Scintilla::Internal {
 
 class CaseFolder {
 public:
-	virtual ~CaseFolder();
+	CaseFolder() = default;
+	// Deleted so CaseFolder objects can not be copied.
+	CaseFolder(const CaseFolder &source) = delete;
+	CaseFolder(CaseFolder &&) = delete;
+	CaseFolder &operator=(const CaseFolder &) = delete;
+	CaseFolder &operator=(CaseFolder &&) = delete;
+	virtual ~CaseFolder() = default;
 	virtual size_t Fold(char *folded, size_t sizeFolded, const char *mixed, size_t lenMixed) = 0;
 };