[boost] [regex] bad_expression changed interface

From: Lorenzo Bettini (bettini_at_[hidden])
Date: 2005-08-16 05:26:27

Hi

in 1.31 bad_expression was

class bad_expression : public bad_pattern
{
public:
    bad_expression(const std::string& s) : bad_pattern(s) {}
};

now in 1.33 it is

class regex_error : public std::runtime_error
{
public:
    explicit regex_error(const std::string& s, 
regex_constants::error_type err, std::ptrdiff_t pos);
    explicit regex_error(boost::regex_constants::error_type err);
    boost::regex_constants::error_type code()const;
    std::ptrdiff_t position()const;
};

typedef regex_error bad_pattern; // for backwards compatibility
typedef regex_error bad_expression; // for backwards compatibility

so I was wondering if there's a way to make

throw boost::bad_expression("internal error");

compile on both versions of the library (this statement was reported not 
to compile with 1.33 by a user of one of my programs)

many thanks in advance
        Lorenzo

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