2GB limit on file size when using fwrite in C?

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On a 32 bits system (i.e. the OS is 32 bits), by default, fopen and co are limited to 32 bits size/offset/etc… You need to enable the large file support, or use the *64 bits option:

http://www.gnu.org/software/libc/manual/html_node/Opening-Streams.html#index-fopen64-931

Then your fs needs to support this, but except fat and other primitive fs, all of them support creating files > 2 gb.

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