Thread: vector iterators incompatible

there like that, I do not see blatant error, therefore, apart from the fact that you assume that Boundary_ contains at least one element.

Beware of side effects may be? Is that changing ptrArc (intersection, assigning a new value) does not invalidate your iterators?

Code:

Loop:: const_iterator toBeTested = boundary_.begin () -> end ();

You retrieve the iterator end of the first list contained in Boundary_ gold crossing can belong to any of these lists. Comparing an iterator to a list with an iterator from another list is undefined behavior.

Could you detail a little for your answer I see stp not well "Comparing an iterator to a list with an iterator from another list is undefined behavior." ?

And another question, if this type of comparison is not allowed in C + +, why the tests passed successfully under GCC?


Thank you

Because an AC undefined behavior can be anything. Including this is what you expect at least until the demo to the client.

VC + + has a way of validating that detects the problem and you indicated. g + + has a way of validating able to detect this kind of problem but you're not using it.