The -DSQLITE_MXFILENAMESZ=N option for some non-negative integer value N

The -DSQLITE_MXFILENAMESZ=N option for some non-negative integer value N
prevents SQLite from ever creating a hole larger than N bytes in a named
file for which a size hint has been issued.  The exception code never
runs, except for cases when the application deliberately corrupts the
size hint.

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