A very simple exception test case results in an abort trap:

host% cat exctest.cpp
struct StackThing {
    ~StackThing() { }
};
struct Thrower {
    static void Throw() {
        StackThing obj;
        throw -1;
    }
};
int main() {
    try {
        Thrower::Throw();
    } catch (...) { }
}

host% g++-4.4.3 exctest.cpp && ./a.out
Abort trap
host%

The problem is absent if the exception and stack object are not in a thrower function, or if the stack object has no destructor.

This is using an all-defaults build of the 4.4.3 tarball on MacOS X 10.6.2 (Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386 i386)