Loading files larger than 2GB on Windows

[tknopp]

Sorry if this is a dump issue:

I tried to read a binary file which is larger than 2GB on Windows with the 64-bit Julia Version (3.1 from the Website). And I get the error:

ERROR: read: end of file
  in read! at iostream.jl:196

On my Macbook it works as expected. Thoughts? @tkelman @vtjnash @Keno

[vtjnash]

probably a bug somewhere in support/ios.c. all off_t types should be 64-bit. not much has been done to see that it actually handles 64-bit files on windows however

[tknopp]

Thanks Jameson, so then it really seems to be a bug.

[tknopp]

There seems to be an option -D_FILE_OFFSET_BITS=64 that allows to change the size of off_t to 64 bit. I currently do not have a Windows development environement. Would be great if someone could test putting the Option to the Makefile

[tkelman]

-D_FILE_OFFSET_BITS=64 is already set in JCFLAGS in Make.inc. Either that flag's not getting sent everywhere it should be, or there's some other problem.

[vtjnash]

off_t is still 32-bit with that flag, it only affects stat, AFAICT

The read function (like __APPLE__) only accepts int's: http://msdn.microsoft.com/en-us/library/wyssk1bs.aspx

[tkelman]

Ah, I think I mostly get what's going on in _os_read now. Should we change this line

julia/src/support/ios.c

Line 76 in 63ecbcb

#ifdef __APPLE__

to #if defined(__APPLE__) || defined(_OS_WINDOWS_) then?