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Avoid using floating point arithmetic and rely on safe_emalloc

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for the multiplication.

The actual size requirement is spelled out as:

** The result is written into a preallocated output buffer "out".
** "out" must be able to hold at least 2 +(257*n)/254 bytes.
** In other words, the output will be expanded by as much as 3
** bytes for every 254 bytes of input plus 2 bytes of fixed overhead.
** (This is approximately 2 + 1.0118*n or about a 1.2% size increase.)
This commit is contained in:
Sascha Schumann 2004-03-07 22:35:26 +00:00
parent 70757063a7
commit 048e66b2a9
1 changed files with 1 additions and 1 deletions
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2
ext/sqlite/sess_sqlite.c
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@ -142,7 +142,7 @@ PS_WRITE_FUNC(sqlite)
t = time(NULL);
binary = emalloc(1 + 5 + vallen * ((float) 256 / (float) 253));
binary = safe_emalloc(1 + vallen / 254, 257, 3);
binlen = sqlite_encode_binary((const unsigned char*)val, vallen, binary);
rv = sqlite_exec_printf(db, "REPLACE INTO session_data VALUES('%q', '%q', %d)", NULL, NULL, &error, key, binary, t);