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PODoing file operations with 64-bit addresses in C + MinGW32
 

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    <p>I'm trying to read in a 24 GB XML file in C, but it won't work. I'm printing out the current position using ftell() as I read it in, but once it gets to a big enough number, it goes back to a small number and starts over, never even getting 20% through the file. I assume this is a problem with the range of the variable that's used to store the position (long), which can go up to about 4,000,000,000 according to <a href="http://msdn.microsoft.com/en-us/library/s3f49ktz(VS.80).aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/s3f49ktz(VS.80).aspx</a>, while my file is 25,000,000,000 bytes in size. A long long should work, but how would I change what my compiler(<a href="http://en.wikipedia.org/wiki/Cygwin" rel="nofollow noreferrer">Cygwin</a>/<a href="http://en.wikipedia.org/wiki/MinGW" rel="nofollow noreferrer">mingw32</a>) uses or get it to have fopen64?</p>
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    1. COwow, a 24GB XML file.
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    3. COOut of curiosity, why?
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