--- test.cc ------------------
struct A { ~A() {} };

A f(const A& a);

struct B {
        bool g(const A&);
        int i;
};

bool B::g(const A& a) {
        g(f(a));
        g(a);
        i = 0;
}
-------------------------------
> g++ -fmudflap test.cc
test.cc: In member function 'bool B::g(const A&)':
test.cc:10: internal compiler error: Segmentation fault

> g++ --version
g++ (GCC) 4.0.3 20060115 (prerelease) (Debian 4.0.2-7)


I can't reproduce this with '4.0.1' or with '4.2.0 20060124'. So possibly the bug is already fixed.