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// PR target/70098
// { dg-do compile }
// { dg-options -O2 }
// { dg-require-effective-target c++11 }
template < typename > struct traits;
template < typename, int _Rows, int _Cols, int = 0, int = _Rows,
int = _Cols > class Matrix;
template < typename > class G;
template < typename Derived > struct A {
typedef G < Derived > type;
};
template < typename Derived > class C {
public:
enum { RowsAtCompileTime =
traits < Derived >::RowsAtCompileTime } static Zero;
};
template < typename Derived > class G:public C < Derived > {
};
template < int _Rows > class D {
public:
long rows() {
return _Rows;
}
};
template < typename Derived > class PlainObjectBase:public A < Derived >::type {
typedef typename A < Derived >::type Base;
D < Base::RowsAtCompileTime > m_storage;
public:
long rows() {
return m_storage.rows();
}
};
int fn1();
struct B {
static long run(long x, long) {
int offset(fn1());
return x + offset;
}};
long fn2(int x)
{
return B::run(x, 0);
}
template < typename _Scalar, int _Rows, int _Cols, int _Options, int _MaxRows,
int _MaxCols >
struct traits <Matrix < _Scalar, _Rows, _Cols, _Options, _MaxRows, _MaxCols >> {
enum { RowsAtCompileTime = _Rows };
};
template < typename, int, int, int, int _MaxRows, int _MaxCols >
class Matrix:public PlainObjectBase < Matrix < double, _MaxRows,
_MaxCols >> {
public:
template < typename OtherDerived > Matrix(OtherDerived);
};
struct F {
static Matrix < double, 2, 2 > run(long size) {
Matrix < double, 2, 2 > diag = Matrix < double, 2, 2 >::Zero;
long i = 0;
while (i < size) {
long randomInt = fn2(-1);
if (randomInt == 0)
++i;
else {
double alpha(randomInt);
diag = alpha;
i = 2;
}
}
return diag;
}
};
void fn3(Matrix < double, 2, 2 > m)
{
long size = m.rows();
F::run(size);
}
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