Hi List!
So, we're finally out there in closed beta. One of the most annyoing
issues is a client side crash. The call stack doesn't say all that much,
but still: it always happens in the Purge command in the destructor of
CUtlVector:
template< typename T, class A >
inline CUtlVector<T, A>::~CUtlVector()
{
Purge();
}
more precisely, in the CUtlVector< screenshake_t * > . [ There's only
one of those, in CViewEffects ].
Now, some questions:
1) any idea why this happens? [ had to ask :D ]
2) if no, any idea on how to debug?
3) Is the following normal? :
// Retire this shake.
delete m_ShakeList.Element( nShake );
m_ShakeList.FastRemove( nShake );
continue;
where:
template< typename T, class A >
void CUtlVector<T, A>::FastRemove( int elem )
{
Assert( IsValidIndex(elem) );
Destruct( &Element(elem) );
if (m_Size > 0)
{
memcpy( &Element(elem), &Element(m_Size-1), sizeof(T) );
--m_Size;
}
}
and
template <class T>
inline void Destruct( T* pMemory )
{
pMemory->~T();
#ifdef _DEBUG
memset( pMemory, 0xDD, sizeof(T) );
#endif
}
Concretely: how come it is allowed to first delete a pointer, and
afterwards still call the destructor on it? Is that not dangerous? [
Probably a c++ finesse I'm missing ]
Shake works fine most of the time though ( I tried with the console
cheat command ), so it's not a reproducible crash yet - but happens very
often in online games.
Thanks in advance for any lights shed in the darkness!
-- Maarten
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