Viewing file:  pr97609.C (1.44 KB) -rw-r--r--
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// PR tree-optimization/97609
// { dg-do compile { target c++11 } }
// { dg-options "-O2 -fno-tree-fre -fnon-call-exceptions" }
struct _Fwd_list_node_base {
_Fwd_list_node_base *_M_next;
void _M_transfer_after() { _Fwd_list_node_base *__keep = _M_next = __keep; }
};
struct _Fwd_list_const_iterator {
_Fwd_list_const_iterator(_Fwd_list_node_base *__n) : _M_node(__n) {}
_Fwd_list_const_iterator(int);
_Fwd_list_node_base *_M_node;
};
template <typename, typename> struct forward_list {
_Fwd_list_node_base _M_head;
template <typename _InputIterator>
forward_list(_InputIterator, _InputIterator);
forward_list(int);
_Fwd_list_const_iterator cbefore_begin() { return &_M_head; }
void splice_after(_Fwd_list_const_iterator) noexcept;
void splice_after(_Fwd_list_const_iterator __pos, forward_list &) {
splice_after(__pos, 0);
}
using __remove_return_type = void;
__remove_return_type unique() { unique(0); }
template <typename _BinPred> __remove_return_type unique(_BinPred);
};
template <typename _Tp, typename _Alloc>
void forward_list<_Tp, _Alloc>::splice_after(_Fwd_list_const_iterator __pos)
noexcept {
__pos._M_node->_M_transfer_after();
}
template <typename _Tp, typename _Alloc>
template <typename _BinPred>
auto forward_list<_Tp, _Alloc>::unique(_BinPred) -> __remove_return_type {
forward_list __to_destroy(0);
splice_after(__to_destroy.cbefore_begin());
}
void
foo ()
{
forward_list<int, int> c1 (0, 0);
c1.unique ();
}
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