#13 Compilation error in Visual C++ 2005 - missing typename

[Anonymous]

I have quite complex project, where I include first my
Base.hpp header (which includes cmath, string,
algorithm, limits and windows.h with
WIN32_LEAN_AND_MEAN and NOMINMAX and muse be included
first because it is precompiled header) and then
sigslot.h. I encounter compilation error:

sigslot.h(419) : warning C4346:

'std::set<sigslot::_signal_base<mt_policy>*>::const_iterator'

dependent name is not a type
prefix with 'typename' to indicate a type
sigslot.h(476) : see reference to class template
instantiation 'sigslot::has_slots<mt_policy>' being
compiled
sigslot.h(419) : error C2146: syntax error : missing
';' before identifier 'const_iterator'
sigslot.h(419) : error C4430: missing type specifier -
int assumed. Note: C++ does not support default-int

in line 419:

typedef sender_set::const_iterator const_iterator;

Description of this error:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccore/html/vcerrCompilerWarningLevel1C4346.asp

When I change this line into:

typedef typename sender_set::const_iterator const_iterator;

everything is OK.

--
Adam Sawicki
regedit@risp.pl
www.regedit.risp.pl

[Nobody/Anonymous]

Logged In: NO

The same error occurs in MSVC 2003 and the fix is also the same.

--
Mark Rebane

[Nobody/Anonymous]

Logged In: NO

Line 414:
template<class mt_policy = SIGSLOT_DEFAULT_MT_POLICY>
class has_slots : public mt_policy
{
private:
typedef std::set<_signal_base<mt_policy> *> sender_set;
//###

public:
has_slots()
{
;
}

has_slots(const has_slots& hs)

mt_policy(hs)
{
lock_block<mt_policy> lock(this);
sender_set::const_iterator it = hs.m_senders.begin();
sender_set::const_iterator itEnd = hs.m_senders.end();

while(it != itEnd)
{
(*it)->slot_duplicate(&hs, this);
m_senders.insert(*it);
++it;
}
}

void signal_connect(_signal_base<mt_policy>* sender)
{
lock_block<mt_policy> lock(this);
m_senders.insert(sender);
}

void signal_disconnect(_signal_base<mt_policy>* sender)
{
lock_block<mt_policy> lock(this);
m_senders.erase(sender);
}

virtual ~has_slots()
{
disconnect_all();
}

void disconnect_all()
{
lock_block<mt_policy> lock(this);
sender_set::const_iterator it = m_senders.begin();
sender_set::const_iterator itEnd = m_senders.end();

while(it != itEnd)
{
(*it)->slot_disconnect(this);
++it;
}

m_senders.erase(m_senders.begin(), m_senders.end());
}

private:
sender_set m_senders;
};