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23 lines
737 B
C++
23 lines
737 B
C++
//Copyright (c) 2006-2008 Emil Dotchevski and Reverge Studios, Inc.
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//Distributed under the Boost Software License, Version 1.0. (See accompanying
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//file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//This example shows how to enable cloning when throwing a boost::exception.
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#include <boost/exception/enable_exception_cloning.hpp>
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#include <boost/exception/info.hpp>
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#include <stdio.h>
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#include <errno.h>
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typedef boost::error_info<struct tag_errno,int> errno_info;
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class file_read_error: public boost::exception { };
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void
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file_read( FILE * f, void * buffer, size_t size )
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{
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if( size!=fread(buffer,1,size,f) )
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throw boost::enable_exception_cloning(file_read_error()) << errno_info(errno);
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}
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