hi,

I am in windows xp sp2 and the compiler is GNU Make 3.80 (gcc 3.4.2)
I am trying to use a multiset iterator to update the content of each element in a multiset. The content is a vector of pointer.

Here is the partial code:

Entity.h
---

class Trade{
...
};

class Meeting{
...
vector<Trade*> trades;
...
};

And in global, I have code like this:

main.cpp
---

multiset<Meeting> meetings;

void update_meetings()
{
multiset<Meeting>::iterator it;
for( it = meetings.begin ; it != meetings.end(); it++ )
{
(it->trades).push_back( new Trade() );
}
}

int main()
{
(read data and create meetings)
...
update_meetings();
}

Then I got a compiler error like this

error: passing `const std::vector<Trade*, std::allocator<Trade*> >' as `this' argument of
`void std::vector<_Tp, _Alloc>::push_back(const _Tp&)
[with _Tp = Trade*, _Alloc = std::allocator<Trade*>]' discards qualifiers
The reason I want to initialize multiset<Meeting> first, then update it later is that it has to wait for another data to be read in. I guess I could integrate the update into the intialization. But I want to figure out where this error comes from. Seems like it has no problem in vc 2005.
does anybody have any idea?