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Avoid 32-bit overflow when calculating the byte offset of an overflow page in SQLITE_DIRECT_OVERFLOW_READ code. Fix for [ac0ff496b7].

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FossilOrigin-Name: c5256b59ad70104c1e181b9f49d1d712cf4cc9f6
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dan
2011-12-21 17:00:16 +00:00
parent 4120994fdf
commit 27d47fbe6e
4 changed files with 69 additions and 9 deletions
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src/btree.c
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@@ -3979,7 +3979,7 @@ static int accessPayload(
u8 aSave[4];
u8 *aWrite = &pBuf[-4];
memcpy(aSave, aWrite, 4);
rc = sqlite3OsRead(fd, aWrite, a+4, pBt->pageSize * (nextPage-1));
rc = sqlite3OsRead(fd, aWrite, a+4, (i64)pBt->pageSize*(nextPage-1));
nextPage = get4byte(aWrite);
memcpy(aWrite, aSave, 4);
}else