#include <exception>
  #include <stdexcept>
  #include <cassert>
  #include <cstring>
  
  int main() {
    using namespace std;
    exception lhs;
    bad_exception rhs;
    lhs = rhs;
    assert( strcmp(lhs.what(), rhs.what()) == 0 );
  }

t: t.cpp:12: int main(): Assertion `strcmp(lhs.what(), rhs.what()) == 0' failed.

Disallowed system call: SYS_kill