Hi i.e. very large spreadsheets of up to 16 million rows.
So I did some more investigation into this. In various places, we need to accumulate things like row-heights and other things, numbers which, with jumbo sheets, easily exceed 32-bits. HOWEVER All over the place, we pass these values through sal_uLong/sal_Long/long/unsigned long. Which is 32-bits on Windows. Doh! Honestly, the only solution I can think of (and one I confidently expect us to reject), is that we declare a flag day, and search and replace sal_Long/sal_uLong/long/unsigned long with a 64-bit type across the ENTIRE code base. Regards, Noel Grandin.
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