Index: src/AST/Type.hpp
===================================================================
--- src/AST/Type.hpp	(revision a00a2c125ed6c98b9dd8952920e10c8e5c2a5846)
+++ src/AST/Type.hpp	(revision b185ed299b893492040b93d780fef55a4e7c251c)
@@ -398,6 +398,6 @@
 	// a zero value of formal_usage indicates an actual type (referenced inside body of parametric structs and functions)
 	TypeDecl::Kind kind;
-	int formal_usage;
-	int expr_id;
+	int formal_usage = 0;
+	int expr_id = 0;
 
 	// compact representation used for map lookups.