compiler: Don't assign to embedded builtins in imported struct composite

literals.

Fixes https://github.com/golang/go/issues/6832.

From-SVN: r219313

diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index d386b81..323ce16 100644 (file)
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -12937,7 +12937,8 @@ Composite_literal_expression::lower_struct(Gogo* gogo, Type* type)
               pf != st->fields()->end();
               ++pf)
            {
-             if (Gogo::is_hidden_name(pf->field_name()))
+             if (Gogo::is_hidden_name(pf->field_name())
+                 || pf->is_embedded_builtin(gogo))
                error_at(this->location(),
                         "assignment of unexported field %qs in %qs literal",
                         Gogo::message_name(pf->field_name()).c_str(),
@@ -13114,7 +13115,8 @@ Composite_literal_expression::lower_struct(Gogo* gogo, Type* type)
 
       if (type->named_type() != NULL
          && type->named_type()->named_object()->package() != NULL
-         && Gogo::is_hidden_name(sf->field_name()))
+         && (Gogo::is_hidden_name(sf->field_name())
+             || sf->is_embedded_builtin(gogo)))
        error_at(name_expr->location(),
                 "assignment of unexported field %qs in %qs literal",
                 Gogo::message_name(sf->field_name()).c_str(),