Re: Heap corruption by vector argument

From:

Ulrich Eckhardt <eckhardt@satorlaser.com>

Newsgroups:

microsoft.public.vc.stl

Date:

Thu, 26 Jul 2007 11:08:47 +0200

Message-ID:

<0u4mn4-8nn.ln1@satorlaser.homedns.org>

Maik Hauguth wrote:

I've got a heap corruption when passing a std::vector<double> by value to
a method within a dll.

I guess that the application and the DLL use different heaps. Make sure that
you are linking both to the same version of the dynamically linked runtime
library.

The problem occurs only in the release version of our project.

Mixing debug and release heaps won't work either. Also, objects of the C++
standard library are binary incompatible between debug and release builds.

Since the B library comes from another project partner, the interface
might not be changed to a call by reference, which would probably solve
the issue.

Possibly, but what if the DLL changes the vector?

I also read many articles about heap corruption which state, that memory
should be deallocated in the same module there it was allocated.

Not necessarily, you only must release memory to the exact same heap that it
was allocated from. Hence the advise to use a dynamic runtime, so both the
DLL and the application use the same heap.

Uli