Re: [PATCH 12/13] gdb/remote: remove uses of sprintf

[Simon Marchi <simon.marchi@efficios.com>]

On 8/17/26 12:51 PM, Andrew Burgess wrote:
>> @@ -11532,35 +11533,42 @@ remote_add_target_side_condition (struct gdbarch *gdbarch,
>>    /* Send conditions to the target.  */
>>    for (agent_expr *aexpr : bp_tgt->conditions)
>>      {
>> -      xsnprintf (buf, buf_end - buf, "X%x,", (int) aexpr->buf.size ());
>> -      buf += strlen (buf);
>> +      buf += xsnprintf (buf, buf_end - buf, "X%x,", (int) aexpr->buf.size ());
>> +
>>        for (int i = 0; i < aexpr->buf.size (); ++i)
>>  	buf = pack_hex_byte (buf, aexpr->buf[i]);
>> +
> 
> I wonder if we should add an assert here either inside, or just after,
> the loop, to check that we've not blown past BUF_END?  Unless I'm
> misunderstanding this, these PACK_HEX_BYTE calls could overrun the
> buffer, right?

I noted in the commit message that I didn't do it, because I wanted to
focus just on the *printf calls, but I can always do it as a follow-up.

Simon