Don't crash on Sizeof of undefined type.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167883 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index 844ff66..4f6e4ed 100644 (file)
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -6722,7 +6722,7 @@ Builtin_call_expression::do_integer_constant_value(bool iota_is_constant,
       if (arg == NULL)
        return false;
       Type* arg_type = arg->type();
-      if (arg_type->is_error_type())
+      if (arg_type->is_error_type() || arg_type->is_undefined())
        return false;
       if (arg_type->is_abstract())
        return false;