git
/
gcc
mirror of git://gcc.gnu.org/git/gcc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

compiler: Don't crash on append with single argument. 

Instead of allocating an empty slice literal, use a slice
value with a nil pointer.

From-SVN: r218806
This commit is contained in:
Ian Lance Taylor 2014-12-17 01:04:39 +00:00
parent 03625f0717
commit d8a99c7c6b
1 changed files with 7 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gcc/go/gofrontend/expressions.cc
View File

@ -6878,7 +6878,11 @@ Builtin_call_expression::do_flatten(Gogo*, Named_object*,
++pa)
{
if ((*pa)->is_nil_expression())
*pa = Expression::make_slice_composite_literal(at, NULL, loc);
{
Expression* nil = Expression::make_nil(loc);
Expression* zero = Expression::make_integer_ul(0, NULL, loc);
*pa = Expression::make_slice_value(at, nil, zero, zero, loc);
}
if (!(*pa)->is_variable())
{
Temporary_statement* temp =
@ -14087,7 +14091,8 @@ class Slice_value_expression : public Expression
int
Slice_value_expression::do_traverse(Traverse* traverse)
{
if (Expression::traverse(&this->valptr_, traverse) == TRAVERSE_EXIT
if (Type::traverse(this->type_, traverse) == TRAVERSE_EXIT
|| Expression::traverse(&this->valptr_, traverse) == TRAVERSE_EXIT
|| Expression::traverse(&this->len_, traverse) == TRAVERSE_EXIT
|| Expression::traverse(&this->cap_, traverse) == TRAVERSE_EXIT)
return TRAVERSE_EXIT;