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Always return a valid pointer in Exception::what()
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@ -27,7 +27,9 @@ char const* Exception::what() const noexcept
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if (string const* cmt = comment())
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return cmt->c_str();
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else
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return nullptr;
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/// Boost accepts nullptr, but the C++ standard doesn't
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/// and crashes on some platforms.
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return std::exception::what();
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}
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string Exception::lineInfo() const
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