Index: src/AST/Pass.proto.hpp
===================================================================
--- src/AST/Pass.proto.hpp	(revision 07d867b95a42cbafd020825e1507f8c956e32d21)
+++ src/AST/Pass.proto.hpp	(revision 0d070cacad00a72507dd2c167585d3eb6ccc9198)
@@ -248,10 +248,10 @@
 	template< typename pass_t >
 	static inline auto beginTrace(pass_t &, int) -> decltype( pass_t::traceId, void() ) {
-		Stats::Heap::stacktrace_push(pass_t::traceId);
+		// Stats::Heap::stacktrace_push(pass_t::traceId);
 	}
 
 	template< typename pass_t >
 	static inline auto endTrace(pass_t &, int) -> decltype( pass_t::traceId, void() ) {
-		Stats::Heap::stacktrace_pop();
+		// Stats::Heap::stacktrace_pop();
 	}
 
Index: src/AST/TypeSubstitution.cpp
===================================================================
--- src/AST/TypeSubstitution.cpp	(revision 07d867b95a42cbafd020825e1507f8c956e32d21)
+++ src/AST/TypeSubstitution.cpp	(revision 0d070cacad00a72507dd2c167585d3eb6ccc9198)
@@ -20,5 +20,5 @@
 
 
-size_t TypeSubstitution::Substituter::traceId = Stats::Heap::new_stacktrace_id("TypeSubstitution");
+// size_t TypeSubstitution::Substituter::traceId = Stats::Heap::new_stacktrace_id("TypeSubstitution");
 
 TypeSubstitution::TypeSubstitution() {