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compiler: accept integral float constants as string indices. 

From-SVN: r203452
This commit is contained in:
Ian Lance Taylor 2013-10-11 17:45:29 +00:00
parent 8d28e3fc18
commit 0213a547b0
1 changed files with 11 additions and 2 deletions
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13
gcc/go/gofrontend/expressions.cc
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@ -10888,11 +10888,20 @@ String_index_expression::do_determine_type(const Type_context*)
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;