Index: src/InitTweak/InitTweak.h
===================================================================
--- src/InitTweak/InitTweak.h	(revision c1ed2eed49812bcfa4987e47ccc9eda7d2fbf8c0)
+++ src/InitTweak/InitTweak.h	(revision ce12e2b15f088274daa97c991566ae160ca9a8fa)
@@ -26,9 +26,9 @@
 // helper functions for initialization
 namespace InitTweak {
-	FunctionDecl * isAssignment( Declaration * decl );
-	FunctionDecl * isDestructor( Declaration * decl );
-	FunctionDecl * isDefaultConstructor( Declaration * decl );
-	FunctionDecl * isCopyConstructor( Declaration * decl );
-	FunctionDecl * isCopyFunction( Declaration * decl, const std::string & fname );
+	const FunctionDecl * isAssignment( const Declaration * decl );
+	const FunctionDecl * isDestructor( const Declaration * decl );
+	const FunctionDecl * isDefaultConstructor( const Declaration * decl );
+	const FunctionDecl * isCopyConstructor( const Declaration * decl );
+	const FunctionDecl * isCopyFunction( const Declaration * decl, const std::string & fname );
 	bool isCopyFunction( const ast::FunctionDecl * decl );
 
@@ -153,6 +153,6 @@
 		InitExpander_new & operator++ ();
 
-		/// builds statement which has the same semantics as a C-style list initializer (for array 
-		/// initializers) using callExpr as the base expression to perform initialization. 
+		/// builds statement which has the same semantics as a C-style list initializer (for array
+		/// initializers) using callExpr as the base expression to perform initialization.
 		/// Mutates callExpr
 		ast::ptr< ast::Stmt > buildListInit( ast::UntypedExpr * callExpr );