[Smartmontools-support] Re: Why is attribute 255 reported differently in -5.0-11 and -16

[<0...@pe...>]

On Wed, 30 Oct 2002, Bruce Allen wrote:

> > I did it. My first smartmontools version was 5.0-10, which it
> > also failed with "255" etc. It's miscompiling since smartsuite
> > 2.1.
>
> I didn't understand what you meant.  Does smartsuite 2.1
> produce the same effect, namely different output depending
> upon the compilation options?

Yes. A miscompiled (with default options) smartsuite 2.1:

smartd:

Device: /dev/hda, S.M.A.R.T. Attribute: 1 Changed -66

smartctl -a /dev/hda:

Revision Number: 3
...
SMART Error Log:
SMART Error Logging Version: 3
No Errors Logged

With GCC 2.95.4:

No erroneous smartd line.

smartctl -a /dev/hda:

Revision Number: 11
...
+(  1)Raw Read Error Rate     0x0029   100   253   020       0
SMART Error Log:
SMART Error Logging Version: 1
No Errors Logged

> > Brazil. BRT (GMT-3). 23:45 now.
>
> OK, I'm in Germany right now, GMT +1.
>
> I've had another idea about what is going wrong.  I use a varargs function
> in my code, to control where the printout goes.  The
>
>     [From
>     GLIBC Manual: Since the prototype doesn't specify types for
>     optional arguments, in a call to a variadic function the default
>     argument promotions are performed on the optional argument
>     values. This means the objects of type char or short int (whether
>     signed or not) are promoted to either int or unsigned int, as
>     appropriate.]
>
> So I've now explicitly converted all the print format statements into
> explicit integer types (except in a couple of places where I had to go to
> long longs.).  Could you try the latest code snapshot from CVS, 5.0-23,
> please?

Just tested. Still the same.

SMART Attributes Data Structure revision number: 23936
...
  5 Reallocated_Sector_Ct   0x6008   135   005   020    Old_age  In_the_past 847118427
  5 Reallocated_Sector_Ct   <== Data Page      |  WARNING: PREVIOUS ATTRIBUTE HAS TWO
  1 Raw_Read_Error_Rate     <== Threshold Page |  INCONSISTENT IDENTITIES IN THE DATA
...
SMART Error Log Version: 3
No Errors Logged

SMART Self-test log, version number 3
Warning - structure revision number does not match spec!
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Off-line            Completed                     00%     36192

> I'm off to sleep.

Me too.

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