Changeset 5c4d27f

Timestamp:

Nov 17, 2017, 5:38:36 PM (7 years ago)

Author:

Rob Schluntz <rschlunt@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

98a249fb, c0b23644

Parents:

48fa824

Message:

Add error check for unimplemented expression parameters for trait types [fixes #60]

File:

• src/SymTab/Validate.cc (modified) (1 diff)

src/SymTab/Validate.cc

@@ -535 +535 @@
                 // need to carry over the 'sized' status of each decl in the instance
                 for ( auto p : group_iterate( traitDecl->get_parameters(), traitInst->get_parameters() ) ) {
-                        TypeExpr * expr = strict_dynamic_cast< TypeExpr * >( std::get<1>(p) );
+                        TypeExpr * expr = dynamic_cast< TypeExpr * >( std::get<1>(p) );
+                        if ( ! expr ) {
+                                throw SemanticError( "Expression parameters for trait instances are currently unsupported: ", std::get<1>(p) );
+                        }
                         if ( TypeInstType * inst = dynamic_cast< TypeInstType * >( expr->get_type() ) ) {
                                 TypeDecl * formalDecl = std::get<0>(p);