Index: src/ResolvExpr/AlternativeFinder.cc
===================================================================
--- src/ResolvExpr/AlternativeFinder.cc	(revision 5fe35d604ff44afc2ac1fbd0310797d09fa78823)
+++ src/ResolvExpr/AlternativeFinder.cc	(revision 83882e9be425bcbc142e8249eb8a86cafa148895)
@@ -186,4 +186,7 @@
 		expr->accept( *this );
 		if ( failFast && alternatives.empty() ) {
+			PRINT(
+				std::cerr << "No reasonable alternatives for expression " << expr << std::endl;
+			)
 			throw SemanticError( "No reasonable alternatives for expression ", expr );
 		}