Comment 6 for bug 1861776
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0e1f616
(Get the code!)
(In reply to Andreas Schwab from comment #2)
> The read is required to sychronize the underlying file position, while
> keeping the stdio buffer aligned on a block boundary.
Though I don't know why it's necessary, but would it be possible in this case to at least only read just one block, that is the last block before the position a program is trying to set with fseek()? So at least, when a program tries to do fseek(…,0x80000000, SEEK_SET), it wouldn't hang on fseek trying to read half a terabyte of data.