compare you application with test_simple_class. This application saves and restores every data type suppported by the compiler/library/platform. This should include wstring. Robert Ramey Jeffrey Faust wrote:
We've discovered an issue Boost has writing and reading wide character strings (wchar_t* and std::wstrings) to non-wide character file streams (std::ifstream and std::ofstream). The issue stems from the fact that wide characters are written and read as a sequence of characters (in text_oarchive_impl.ipp and text_iarchive_impl.ipp, respectively). For text streams, an EOF character terminates the reading of a file on Windows. Some wide characters have EOF (value = 26 decimal) as one of the bytes so reading that byte causes early termination of the read. We have worked around the issue by deriving our own input and output archives from text_i|oarchive_impl<Archive> and overriding load_override() and save_override for std::wstring and wchar_t*. Our implementation just sequences through the wide characters and writes them 1 by 1 as wchar_t to the archive. This isn't very elegant and is even less readable in the file than the current implementation but does resolve the problem.
I looked at both Boost 1.34.1 and 1.35 and didn't see a difference in the implementation here so I'm assuming 1.35 still has the issue. I've been working with 1.34.1. Is this a known issue? Does 1.35 solve it in some other subtle way? Is there a better way that doesn't require us to derive our own streams? If not, is there a more elegant way of implementing the reading and writing of wide characters ourselves?
Thanks in advance.
Jeff Faust
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