void
String_index_expression::do_check_types(Gogo*)
{
- if (this->start_->type()->integer_type() == NULL)
+ Numeric_constant nc;
+ unsigned long v;
+ if (this->start_->type()->integer_type() == NULL
+ && !this->start_->type()->is_error()
+ && (!this->start_->numeric_constant_value(&nc)
+ || nc.to_unsigned_long(&v) == Numeric_constant::NC_UL_NOTINT))
this->report_error(_("index must be integer"));
if (this->end_ != NULL
&& this->end_->type()->integer_type() == NULL
- && !this->end_->is_nil_expression())
+ && !this->end_->type()->is_error()
+ && !this->end_->is_nil_expression()
+ && !this->end_->is_error_expression()
+ && (!this->end_->numeric_constant_value(&nc)
+ || nc.to_unsigned_long(&v) == Numeric_constant::NC_UL_NOTINT))
this->report_error(_("slice end must be integer"));
std::string sval;