id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5325,boost::uuids::detail::sha1 computes incorrect result on vs2010sp1.iso,frankrq2009@…,Andy Tompkins,"I wrote a program to compute the CRC32 and sha1 checksum, I found it can generate correct sha1 result only if the size of the checked file is not too big(e.g.,the size of virtualbox or linux kernel source), but when I checked vs2010sp1.iso which is around 1.6GB, the crc32 is correct, the sha1 is not the same as the output of sha1sum. The version of boost that I tested are 1.45.0,1.46.0 and 1.46.1, both on windows 7 and linux 2.6.36.
I attach my source code here.

#include <stdio.h>
#ifdef WIN32
#include <io.h>
#else
#include <sys/types.h>
#endif
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <exception>
#include <boost/crc.hpp>
#include <boost/uuid/sha1.hpp>

const int bufSize = 4096;
int main(int argc, char**argv)
{
    if(argc < 2)
    {
        printf(""Useage:\t%s FileName1 FileName2 ...\n"",argv[0]);
        return 1;
    }   
	char buf[bufSize];    
    try
    {
        for(int i = 1; i < argc; ++i)
        {
            boost::crc_32_type crc;
            boost::uuids::detail::sha1 sha;

            int fd=::open(argv[i], O_RDONLY);
            if(fd<0)
            {
				printf(""Failed to open file %s, error:%s\n"", argv[i], strerror(errno));
				continue;
			}
			while(1)
			{
				int n=::read(fd, buf, bufSize);
				if(n<=0)
					break;
				crc.process_bytes(buf, n);
				sha.process_bytes(buf, n);
			};
			::close(fd);
			unsigned int dig[5];
            sha.get_digest(dig);
			printf(""%s :\nCRC32 = %08x\nSHA1  = "",argv[i], crc.checksum());
			for(i=0; i<5; ++i)
                printf(""%04x"",dig[i]);
            printf(""\n"");
        }
        return 0;
    }
    catch(std::exception &e)
    {
        printf(""Found an exception with '%s'\n"",e.what());
        return 2;
    }
    catch(...)
    {
        printf(""Found an unknown exception.\n"");
        return 3;
    }
}

",Bugs,closed,To Be Determined,uuid,Boost 1.45.0,Problem,fixed,sha1,