https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64163
--- Comment #7 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Here is another reduced testcase. This time hopefully without and ODR issues.
% cat qmimeglobpattern.ii
class A
{
public:
bool deref ();
};
class QString;
struct B
{
A ref;
};
template <typename> class QList
{
B d;
public:
~QList ();
class const_iterator
{
};
const_iterator constBegin ();
void clear ();
void dealloc ();
};
template <typename T> QList<T>::~QList ()
{
if (d.ref.deref ())
dealloc ();
}
template <typename T>
void
QList<T>::clear ()
{
QList ();
}
class A1 : public QList<QString>
{
};
class B1
{
public:
B1 (A1);
};
struct F
{
void addMatch (const QString &&);
A1 m_matchingMimeTypes;
};
class G
{
A1 matchingGlobs (const QString &) const;
};
void
F::addMatch (const QString &&)
{
m_matchingMimeTypes.clear ();
}
A1
G::matchingGlobs (const QString &) const
{
A1 a;
for (B1 b (a);;)
;
}
% cat qmimeprovider.ii
class A
{
public:
bool deref ();
};
class QString;
struct B
{
A ref;
};
template <typename> class QList
{
B d;
public:
~QList ();
class const_iterator
{
};
const_iterator constBegin ();
void clear ();
void dealloc ();
};
class C
{
QList<QString> c;
QList<QString>::const_iterator i;
public:
C (QList<QString>) : i (c.constBegin ()) {}
};
template <typename T> QList<T>::~QList ()
{
if (d.ref.deref ())
dealloc ();
}
void
fn1 ()
{
QList<QString> a;
C b (a);
}
% g++ -fuse-ld=bfd -shared -fPIC -O3 -fvisibility=hidden -std=c++0x
qmimeglobpattern.ii qmimeprovider.ii
% g++ -fuse-ld=gold -shared -fPIC -O3 -fvisibility=hidden -std=c++0x
qmimeglobpattern.ii qmimeprovider.ii
/usr/bin/ld.gold: error: /tmp/ccRfiSrB.o: requires dynamic R_X86_64_PC32 reloc
against '_ZN5QListI7QStringED1Ev' which may overflow at runtime; recompile with
-fPIC
/tmp/ccRfiSrB.o:qmimeprovider.ii:function fn1(): warning: relocation refers to
discarded section
/tmp/ccRfiSrB.o:qmimeprovider.ii:function fn1(): warning: relocation refers to
discarded section
/tmp/ccRfiSrB.o:qmimeprovider.ii:function fn1(): warning: relocation refers to
discarded section
collect2: error: ld returned 1 exit status
