Hi all I'm getting the following error in boost 1.35.0 on Solaris 10 using Sun Studio 12 : "/home/amoe/src/boost_1_35_0/boost/format/alt_sstream_impl.hpp", line 252: Error: Cannot assign void* to char*. Where: While instantiating "boost::io::basic_altstringbuf, std::allocator>::overflow(int)". Where: Instantiated from non-template code.1 Error(s) detected. I'd like to track down which part of my own code initiates the error, but frankly I'm not sure how to do that - the compiler output reports nothing but the above error. These are the relevant lines from alt_sstream_impl.hpp : add_size) { new_size += add_size; newptr = alloc_.allocate(new_size, is_allocated_? oldptr : 0); // ERROR } Regards, Anders