Problem using gcov

Problem using gcov

[Alexander Fichtinger]

Hi guys,

 
we have faced an error while using the gcov tool.

We have the following C-code:



    LC_TD_DINT caseSelector;

    caseSelector = LC_this->LC_VD_X;

    if ((caseSelector==(LC_TD_DINT)1L)||(caseSelector==(LC_TD_DINT)2L)||((caseSelector>=(LC_TD_DINT)33L) && (caseSelector<=(LC_TD_DINT)44L)))

    {

      LC_this->LC_VD_X = (LC_TD_INT)3;

      if ((LC_TD_BOOL)(LC_this->LC_VD_INPUT_VAR == (LC_TD_INT)2))

      {

        LC_this->LC_VD_Y = (LC_TD_INT)666;

      }

    }

    else

    {

      LC_this->LC_VD_X = (LC_TD_INT)4;

    }

 
 
 
 
 
When we use gcov (with options –bcfu) we got the following result (in the c.gcov file):

 
 
-:   19:    LC_TD_DINT caseSelector;

        1:   20:    caseSelector = LC_this->LC_VD_X;

        1:   21:    if ((caseSelector==(LC_TD_DINT)1L)||(caseSelector==(LC_TD_DINT)2L)||((caseSelector>=(LC_TD_DINT)33L) && (caseSelector<=(LC_TD_DINT)44L)))

branch  0 taken 1 (fallthrough)

branch  1 taken 0

branch  2 taken 0 (fallthrough)

branch  3 taken 1

branch  4 never executed

branch  5 never executed

branch  6 never executed

branch  7 never executed

        -:   22:    {

        1:   23:      LC_this->LC_VD_X = (LC_TD_INT)3;

        2:   24:      if ((LC_TD_BOOL)(LC_this->LC_VD_INPUT_VAR == (LC_TD_INT)2))

branch  0 taken 1 (fallthrough)

branch  1 taken 0

unconditional  2 taken 1

        -:   25:      {

        1:   26:        LC_this->LC_VD_Y = (LC_TD_INT)666;

unconditional  0 taken 1

        -:   27:      }

        -:   28:    }

        -:   29:    else

        -:   30:    {

    #####:   31:      LC_this->LC_VD_X = (LC_TD_INT)4;

unconditional  0 never executed

        -:   32:    }

 
 
 
 
 
When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
We already looked in the disassembly but did not see a reason why the line should be executed 2 times.

Can anyone help here, please?

Kind regards,
Alex



 

Re: Problem using gcov

[Martin Liška]

On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
> 
> Can anyone help here, please?
> 
> Kind regards,
> Alex

Hi.

Sure, can you please send a self-contained test-case that I can run?

Thank you,
Martin

Re: AW: Problem using gcov

[Martin Liška]

On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
> Hi Martin,
> 
> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
> 
> 
> We can reproduce the strange behavior in a standalone scenario.
> 
> I've provided it in the attachments.
> In the ZIP-file there is also a README.txt which contains the commands which I called.
> 
> And the line with the "strange" execution count is also mentioned.
> 
> Thank you and kind regards,
> 
> Alexander
> 
> 
> -----UrsprĂźngliche Nachricht-----
> Von: Martin Liška [mailto:mliska@suse.cz] 
> Gesendet: Donnerstag, 22. Februar 2018 10:43
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
> Betreff: Re: Problem using gcov
> 
> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>
>> Can anyone help here, please?
>>
>> Kind regards,
>> Alex
> 
> Hi.
> 
> Sure, can you please send a self-contained test-case that I can run?
> 
> Thank you,
> Martin
> 

No problem, I can confirm the problem:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572

Martin

AW: AW: Problem using gcov

[Alexander Fichtinger]

Thanks Martin!

I've seen that the target milestone for this bug is 8.0.

When is 8.0 going to be released?

Thanks and kind regards,
Alexander

-----Ursprüngliche Nachricht-----
Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
Gesendet: Montag, 26. Februar 2018 14:57
An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
Betreff: Re: AW: Problem using gcov

On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
> Hi Martin,
> 
> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
> 
> 
> We can reproduce the strange behavior in a standalone scenario.
> 
> I've provided it in the attachments.
> In the ZIP-file there is also a README.txt which contains the commands which I called.
> 
> And the line with the "strange" execution count is also mentioned.
> 
> Thank you and kind regards,
> 
> Alexander
> 
> 
> -----Ursprüngliche Nachricht-----
> Von: Martin Liška [mailto:mliska@suse.cz] 
> Gesendet: Donnerstag, 22. Februar 2018 10:43
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
> Betreff: Re: Problem using gcov
> 
> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>
>> Can anyone help here, please?
>>
>> Kind regards,
>> Alex
> 
> Hi.
> 
> Sure, can you please send a self-contained test-case that I can run?
> 
> Thank you,
> Martin
> 

No problem, I can confirm the problem:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572

Martin

Re: AW: Problem using gcov

[Jonathan Wakely]

On 26 February 2018 at 14:02, Alexander Fichtinger wrote:
> Thanks Martin!
>
> I've seen that the target milestone for this bug is 8.0.
>
> When is 8.0 going to be released?

The version number 8.0 is used for snapshots from trunk in version
control, the actual release will be 8.1, see
https://gcc.gnu.org/develop.html#num_scheme
(Bugzilla doesn't know this though, and so "8.0" means "before the 8.1
release").

GCC major releases happen annually, some time around April.

Re: AW: AW: Problem using gcov

[Martin Liška]

On 02/26/2018 03:02 PM, Alexander Fichtinger wrote:
> Thanks Martin!
> 
> I've seen that the target milestone for this bug is 8.0.

I did, but as described in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572#c1
I'm not planning to fix it in the next releases. It's just a minor issue in GCOV
infrastructure.

Thank you for understanding,
Martin

> 
> When is 8.0 going to be released?
> 
> Thanks and kind regards,
> Alexander
> 
> -----UrsprĂźngliche Nachricht-----
> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
> Gesendet: Montag, 26. Februar 2018 14:57
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
> Betreff: Re: AW: Problem using gcov
> 
> On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
>> Hi Martin,
>>
>> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
>>
>>
>> We can reproduce the strange behavior in a standalone scenario.
>>
>> I've provided it in the attachments.
>> In the ZIP-file there is also a README.txt which contains the commands which I called.
>>
>> And the line with the "strange" execution count is also mentioned.
>>
>> Thank you and kind regards,
>>
>> Alexander
>>
>>
>> -----UrsprĂźngliche Nachricht-----
>> Von: Martin Liška [mailto:mliska@suse.cz] 
>> Gesendet: Donnerstag, 22. Februar 2018 10:43
>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
>> Betreff: Re: Problem using gcov
>>
>> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>>
>>> Can anyone help here, please?
>>>
>>> Kind regards,
>>> Alex
>>
>> Hi.
>>
>> Sure, can you please send a self-contained test-case that I can run?
>>
>> Thank you,
>> Martin
>>
> 
> No problem, I can confirm the problem:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572
> 
> Martin
> 

AW: AW: AW: Problem using gcov

[Alexander Fichtinger]

Ok, thanks for the info.

I just saw the description in the bug-report.
When we document this for our customers, it's ok, I think. 

Thanks and kind regards,
Alexander

-----Ursprüngliche Nachricht-----
Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
Gesendet: Montag, 26. Februar 2018 15:36
An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
Betreff: Re: AW: AW: Problem using gcov

On 02/26/2018 03:02 PM, Alexander Fichtinger wrote:
> Thanks Martin!
> 
> I've seen that the target milestone for this bug is 8.0.

I did, but as described in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572#c1
I'm not planning to fix it in the next releases. It's just a minor issue in GCOV infrastructure.

Thank you for understanding,
Martin

> 
> When is 8.0 going to be released?
> 
> Thanks and kind regards,
> Alexander
> 
> -----Ursprüngliche Nachricht-----
> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
> von Martin Liška
> Gesendet: Montag, 26. Februar 2018 14:57
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
> gcc@gcc.gnu.org
> Betreff: Re: AW: Problem using gcov
> 
> On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
>> Hi Martin,
>>
>> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
>>
>>
>> We can reproduce the strange behavior in a standalone scenario.
>>
>> I've provided it in the attachments.
>> In the ZIP-file there is also a README.txt which contains the commands which I called.
>>
>> And the line with the "strange" execution count is also mentioned.
>>
>> Thank you and kind regards,
>>
>> Alexander
>>
>>
>> -----Ursprüngliche Nachricht-----
>> Von: Martin Liška [mailto:mliska@suse.cz]
>> Gesendet: Donnerstag, 22. Februar 2018 10:43
>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
>> gcc@gcc.gnu.org
>> Betreff: Re: Problem using gcov
>>
>> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>>
>>> Can anyone help here, please?
>>>
>>> Kind regards,
>>> Alex
>>
>> Hi.
>>
>> Sure, can you please send a self-contained test-case that I can run?
>>
>> Thank you,
>> Martin
>>
> 
> No problem, I can confirm the problem:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572
> 
> Martin
> 

Re: AW: AW: AW: Problem using gcov

[Martin Liška]

On 02/26/2018 03:41 PM, Alexander Fichtinger wrote:
> Ok, thanks for the info.
> 
> I just saw the description in the bug-report.
> When we document this for our customers, it's ok, I think. 

Thanks for understanding. I would just note that there's couple of similar issues
you probably want to be aware of:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83434
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83505
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83587
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83616
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83678
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813

Martin

> 
> Thanks and kind regards,
> Alexander
> 
> -----UrsprĂźngliche Nachricht-----
> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
> Gesendet: Montag, 26. Februar 2018 15:36
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
> Betreff: Re: AW: AW: Problem using gcov
> 
> On 02/26/2018 03:02 PM, Alexander Fichtinger wrote:
>> Thanks Martin!
>>
>> I've seen that the target milestone for this bug is 8.0.
> 
> I did, but as described in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572#c1
> I'm not planning to fix it in the next releases. It's just a minor issue in GCOV infrastructure.
> 
> Thank you for understanding,
> Martin
> 
>>
>> When is 8.0 going to be released?
>>
>> Thanks and kind regards,
>> Alexander
>>
>> -----UrsprĂźngliche Nachricht-----
>> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
>> von Martin Liška
>> Gesendet: Montag, 26. Februar 2018 14:57
>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
>> gcc@gcc.gnu.org
>> Betreff: Re: AW: Problem using gcov
>>
>> On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
>>> Hi Martin,
>>>
>>> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
>>>
>>>
>>> We can reproduce the strange behavior in a standalone scenario.
>>>
>>> I've provided it in the attachments.
>>> In the ZIP-file there is also a README.txt which contains the commands which I called.
>>>
>>> And the line with the "strange" execution count is also mentioned.
>>>
>>> Thank you and kind regards,
>>>
>>> Alexander
>>>
>>>
>>> -----UrsprĂźngliche Nachricht-----
>>> Von: Martin Liška [mailto:mliska@suse.cz]
>>> Gesendet: Donnerstag, 22. Februar 2018 10:43
>>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
>>> gcc@gcc.gnu.org
>>> Betreff: Re: Problem using gcov
>>>
>>> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>>>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>>>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>>>
>>>> Can anyone help here, please?
>>>>
>>>> Kind regards,
>>>> Alex
>>>
>>> Hi.
>>>
>>> Sure, can you please send a self-contained test-case that I can run?
>>>
>>> Thank you,
>>> Martin
>>>
>>
>> No problem, I can confirm the problem:
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572
>>
>> Martin
>>
> 
> 

AW: AW: AW: AW: Problem using gcov

[Alexander Fichtinger]

Ok, thanks for the information.

Do we get all coverage-related problems when we monitor the Bugs with the Component "gcov-profile"?
Or are there other components concerning coverage?

We are using gcov in our Testframework (used for Automotive software) in order to determine the Code-Coverage, 
so it is important for us to know if there are any bugs which could compromise the reported test coverage.


Thanks and kind regards,
Alexander

-----Ursprüngliche Nachricht-----
Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
Gesendet: Dienstag, 27. Februar 2018 09:01
An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
Betreff: Re: AW: AW: AW: Problem using gcov

On 02/26/2018 03:41 PM, Alexander Fichtinger wrote:
> Ok, thanks for the info.
> 
> I just saw the description in the bug-report.
> When we document this for our customers, it's ok, I think. 

Thanks for understanding. I would just note that there's couple of similar issues you probably want to be aware of:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83434
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83505
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83587
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83616
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83678
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813

Martin

> 
> Thanks and kind regards,
> Alexander
> 
> -----Ursprüngliche Nachricht-----
> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
> von Martin Liška
> Gesendet: Montag, 26. Februar 2018 15:36
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
> gcc@gcc.gnu.org
> Betreff: Re: AW: AW: Problem using gcov
> 
> On 02/26/2018 03:02 PM, Alexander Fichtinger wrote:
>> Thanks Martin!
>>
>> I've seen that the target milestone for this bug is 8.0.
> 
> I did, but as described in 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572#c1
> I'm not planning to fix it in the next releases. It's just a minor issue in GCOV infrastructure.
> 
> Thank you for understanding,
> Martin
> 
>>
>> When is 8.0 going to be released?
>>
>> Thanks and kind regards,
>> Alexander
>>
>> -----Ursprüngliche Nachricht-----
>> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
>> von Martin Liška
>> Gesendet: Montag, 26. Februar 2018 14:57
>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>> gcc@gcc.gnu.org
>> Betreff: Re: AW: Problem using gcov
>>
>> On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
>>> Hi Martin,
>>>
>>> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
>>>
>>>
>>> We can reproduce the strange behavior in a standalone scenario.
>>>
>>> I've provided it in the attachments.
>>> In the ZIP-file there is also a README.txt which contains the commands which I called.
>>>
>>> And the line with the "strange" execution count is also mentioned.
>>>
>>> Thank you and kind regards,
>>>
>>> Alexander
>>>
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: Martin Liška [mailto:mliska@suse.cz]
>>> Gesendet: Donnerstag, 22. Februar 2018 10:43
>>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>>> gcc@gcc.gnu.org
>>> Betreff: Re: Problem using gcov
>>>
>>> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>>>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>>>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>>>
>>>> Can anyone help here, please?
>>>>
>>>> Kind regards,
>>>> Alex
>>>
>>> Hi.
>>>
>>> Sure, can you please send a self-contained test-case that I can run?
>>>
>>> Thank you,
>>> Martin
>>>
>>
>> No problem, I can confirm the problem:
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572
>>
>> Martin
>>
> 
> 

Re: AW: AW: AW: AW: Problem using gcov

[Martin Liška]

On 02/27/2018 09:13 AM, Alexander Fichtinger wrote:
> Ok, thanks for the information.
> 
> Do we get all coverage-related problems when we monitor the Bugs with the Component "gcov-profile"?
> Or are there other components concerning coverage?

Yes, I mark all gcov bugs with this component.

> 
> We are using gcov in our Testframework (used for Automotive software) in order to determine the Code-Coverage, 
> so it is important for us to know if there are any bugs which could compromise the reported test coverage.

Understand that!
Martin

> 
> 
> Thanks and kind regards,
> Alexander
> 
> -----UrsprĂźngliche Nachricht-----
> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
> Gesendet: Dienstag, 27. Februar 2018 09:01
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
> Betreff: Re: AW: AW: AW: Problem using gcov
> 
> On 02/26/2018 03:41 PM, Alexander Fichtinger wrote:
>> Ok, thanks for the info.
>>
>> I just saw the description in the bug-report.
>> When we document this for our customers, it's ok, I think. 
> 
> Thanks for understanding. I would just note that there's couple of similar issues you probably want to be aware of:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83434
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83505
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83587
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83616
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83678
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813
> 
> Martin
> 
>>
>> Thanks and kind regards,
>> Alexander
>>
>> -----UrsprĂźngliche Nachricht-----
>> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
>> von Martin Liška
>> Gesendet: Montag, 26. Februar 2018 15:36
>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
>> gcc@gcc.gnu.org
>> Betreff: Re: AW: AW: Problem using gcov
>>
>> On 02/26/2018 03:02 PM, Alexander Fichtinger wrote:
>>> Thanks Martin!
>>>
>>> I've seen that the target milestone for this bug is 8.0.
>>
>> I did, but as described in 
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572#c1
>> I'm not planning to fix it in the next releases. It's just a minor issue in GCOV infrastructure.
>>
>> Thank you for understanding,
>> Martin
>>
>>>
>>> When is 8.0 going to be released?
>>>
>>> Thanks and kind regards,
>>> Alexander
>>>
>>> -----UrsprĂźngliche Nachricht-----
>>> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
>>> von Martin Liška
>>> Gesendet: Montag, 26. Februar 2018 14:57
>>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>>> gcc@gcc.gnu.org
>>> Betreff: Re: AW: Problem using gcov
>>>
>>> On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
>>>> Hi Martin,
>>>>
>>>> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
>>>>
>>>>
>>>> We can reproduce the strange behavior in a standalone scenario.
>>>>
>>>> I've provided it in the attachments.
>>>> In the ZIP-file there is also a README.txt which contains the commands which I called.
>>>>
>>>> And the line with the "strange" execution count is also mentioned.
>>>>
>>>> Thank you and kind regards,
>>>>
>>>> Alexander
>>>>
>>>>
>>>> -----UrsprĂźngliche Nachricht-----
>>>> Von: Martin Liška [mailto:mliska@suse.cz]
>>>> Gesendet: Donnerstag, 22. Februar 2018 10:43
>>>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>>>> gcc@gcc.gnu.org
>>>> Betreff: Re: Problem using gcov
>>>>
>>>> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>>>>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>>>>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>>>>
>>>>> Can anyone help here, please?
>>>>>
>>>>> Kind regards,
>>>>> Alex
>>>>
>>>> Hi.
>>>>
>>>> Sure, can you please send a self-contained test-case that I can run?
>>>>
>>>> Thank you,
>>>> Martin
>>>>
>>>
>>> No problem, I can confirm the problem:
>>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572
>>>
>>> Martin
>>>
>>
>>
> 
> 

AW: AW: AW: AW: AW: Problem using gcov

[Alexander Fichtinger]

Ok, thank you.

Alexander

-----Ursprüngliche Nachricht-----
Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag von Martin Liška
Gesendet: Dienstag, 27. Februar 2018 13:39
An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; gcc@gcc.gnu.org
Betreff: Re: AW: AW: AW: AW: Problem using gcov

On 02/27/2018 09:13 AM, Alexander Fichtinger wrote:
> Ok, thanks for the information.
> 
> Do we get all coverage-related problems when we monitor the Bugs with the Component "gcov-profile"?
> Or are there other components concerning coverage?

Yes, I mark all gcov bugs with this component.

> 
> We are using gcov in our Testframework (used for Automotive software) 
> in order to determine the Code-Coverage, so it is important for us to know if there are any bugs which could compromise the reported test coverage.

Understand that!
Martin

> 
> 
> Thanks and kind regards,
> Alexander
> 
> -----Ursprüngliche Nachricht-----
> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
> von Martin Liška
> Gesendet: Dienstag, 27. Februar 2018 09:01
> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>; 
> gcc@gcc.gnu.org
> Betreff: Re: AW: AW: AW: Problem using gcov
> 
> On 02/26/2018 03:41 PM, Alexander Fichtinger wrote:
>> Ok, thanks for the info.
>>
>> I just saw the description in the bug-report.
>> When we document this for our customers, it's ok, I think. 
> 
> Thanks for understanding. I would just note that there's couple of similar issues you probably want to be aware of:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83434
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83505
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83587
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83616
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83678
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83813
> 
> Martin
> 
>>
>> Thanks and kind regards,
>> Alexander
>>
>> -----Ursprüngliche Nachricht-----
>> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
>> von Martin Liška
>> Gesendet: Montag, 26. Februar 2018 15:36
>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>> gcc@gcc.gnu.org
>> Betreff: Re: AW: AW: Problem using gcov
>>
>> On 02/26/2018 03:02 PM, Alexander Fichtinger wrote:
>>> Thanks Martin!
>>>
>>> I've seen that the target milestone for this bug is 8.0.
>>
>> I did, but as described in
>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572#c1
>> I'm not planning to fix it in the next releases. It's just a minor issue in GCOV infrastructure.
>>
>> Thank you for understanding,
>> Martin
>>
>>>
>>> When is 8.0 going to be released?
>>>
>>> Thanks and kind regards,
>>> Alexander
>>>
>>> -----Ursprüngliche Nachricht-----
>>> Von: gcc-owner@gcc.gnu.org [mailto:gcc-owner@gcc.gnu.org] Im Auftrag 
>>> von Martin Liška
>>> Gesendet: Montag, 26. Februar 2018 14:57
>>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>>> gcc@gcc.gnu.org
>>> Betreff: Re: AW: Problem using gcov
>>>
>>> On 02/26/2018 11:30 AM, Alexander Fichtinger wrote:
>>>> Hi Martin,
>>>>
>>>> sorry that it took me so long to create the standalone sample, but I was very busy the last few days.
>>>>
>>>>
>>>> We can reproduce the strange behavior in a standalone scenario.
>>>>
>>>> I've provided it in the attachments.
>>>> In the ZIP-file there is also a README.txt which contains the commands which I called.
>>>>
>>>> And the line with the "strange" execution count is also mentioned.
>>>>
>>>> Thank you and kind regards,
>>>>
>>>> Alexander
>>>>
>>>>
>>>> -----Ursprüngliche Nachricht-----
>>>> Von: Martin Liška [mailto:mliska@suse.cz]
>>>> Gesendet: Donnerstag, 22. Februar 2018 10:43
>>>> An: Alexander Fichtinger <alexander.fichtinger@logicals.com>;
>>>> gcc@gcc.gnu.org
>>>> Betreff: Re: Problem using gcov
>>>>
>>>> On 02/21/2018 02:33 PM, Alexander Fichtinger wrote:
>>>>> When you look at line 23 it is called 1 time. Line 24 is called 2 times (the bold one).
>>>>> We already looked in the disassembly but did not see a reason why the line should be executed 2 times.
>>>>>
>>>>> Can anyone help here, please?
>>>>>
>>>>> Kind regards,
>>>>> Alex
>>>>
>>>> Hi.
>>>>
>>>> Sure, can you please send a self-contained test-case that I can run?
>>>>
>>>> Thank you,
>>>> Martin
>>>>
>>>
>>> No problem, I can confirm the problem:
>>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84572
>>>
>>> Martin
>>>
>>
>>
> 
>