Index: src/ResolvExpr/AlternativeFinder.cc
===================================================================
--- src/ResolvExpr/AlternativeFinder.cc	(revision 452747a874e502a4fcc82e43921e6dc1fac67e6e)
+++ src/ResolvExpr/AlternativeFinder.cc	(revision f203a7a1eb56be0df147abdb42ec52c9a2c51be4)
@@ -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 );
 		}