Re: [Clax86list] Feedback please (Linux, NASM code)

Frank Kotler <spamtrap@xxxxxxxxxx> wrote:

Charles A. Crayne wrote:
On Wed, 22 Nov 2006 15:03:00 -0500
Frank Kotler <spamtrap@xxxxxxxxxx> wrote:

:(why the hell can't I find "itoa" in the man pages???)

Probably because the man pages spells it "sprintf",

Yipes! Isn't that dangerous? It was "sprintf" that allowed the buffer
overflow in Nasm - had to replace it with "snprintf". Well, won't be a
problem here...

If you are using sprintf to do the equivalent of itoa, then you have an
absolute upper bound on the size of the output string.

char xyz[12];
sprintf( xyz, "%d", i );

That can't overflow.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.

.

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