Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Mattias Gaertner]

On Mon, 1 May 2017 10:46:50 +0200
Florian Klämpfl  wrote:

>[...]
> 3.0.x is broken in this regard (stack back trace on x86-64 elf targets), see 
> other threads on the
> fpc mailing lists regarding this. This is why we discussing a quick as 
> possibile 3.0.4 release.

Any news here?

Mattias
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Marco van de Voort]

In our previous episode, Bernd Mueller said:
> > Please test with the fixes branches.
> 
> I tested yesterdays fixes branch and it worked for me now.

Good. Most mass merging now have been done. Some dots-on-i and a rereading
of various threads for unmerged requests still have to be done.
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Bernd Mueller]

On 05/01/2017 02:34 PM, Marco van de Voort wrote:

In our previous episode, Bernd Mueller said:

Only 3.0.2 linux for i386 CPU has the problem. 64-bit is OK.


hmm, I don't get the lineinfo on x86-64 (Ubuntu 16.04/Mate, 64-Bit).
armel and armhf are affected too.


Please test with the fixes branches.


I tested yesterdays fixes branch and it worked for me now.

Regards, Bernd.
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Florian Klämpfl]

Am 01.05.2017 um 17:10 schrieb Marco van de Voort:
> In our previous episode, Florian Kl?mpfl said:
>>> URL
>>> 'https://svn.freepascal.org/svn/fpc/branches/fixes_3_0':
>>
>> Just relocate the check out?
>>
>> For people using git-svn, the section 'General Case' here:
>> https://git.wiki.kernel.org/index.php/GitSvnSwitch should help.
> 
> I already fixed it immediately after the last msg, without coding even,
> since the urls were in an ini file. It was just confusing that I recompiled
> the app with minor mods after a long time, and it bombed. Then you don't
> immediately expect a server config change :-)
> 
> The viewvc revs are also live. Clicking on them might be a bit hard though
> (depending on browser) because the javascript fold old out code is also
> active on that part of the line. JS is not my forte.
> 
> http://www.stack.nl/~marcov/mergelogs26/backtrace.html

Nice :)

Mine should probably not be merged, but maybe r33038 and most likely r35886?

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Marco van de Voort]

In our previous episode, Florian Kl?mpfl said:
> > URL
> > 'https://svn.freepascal.org/svn/fpc/branches/fixes_3_0':
> 
> Just relocate the check out?
> 
> For people using git-svn, the section 'General Case' here:
> https://git.wiki.kernel.org/index.php/GitSvnSwitch should help.

I already fixed it immediately after the last msg, without coding even,
since the urls were in an ini file. It was just confusing that I recompiled
the app with minor mods after a long time, and it bombed. Then you don't
immediately expect a server config change :-)

The viewvc revs are also live. Clicking on them might be a bit hard though
(depending on browser) because the javascript fold old out code is also
active on that part of the line. JS is not my forte.

http://www.stack.nl/~marcov/mergelogs26/backtrace.html


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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Florian Klämpfl]

Am 01.05.2017 um 15:16 schrieb Marco van de Voort:
> In our previous episode, Marco van de Voort said:
 http://www.stack.nl/~marcov/mergelogs26/backtrace.txt
>>>
>>> BTW: Could you extend your scripts to include links for the revs to ViewVC?
>>> Pattern is: 
>>> https://svn.freepascal.org/cgi-bin/viewvc.cgi?view=revision=35495
>>
>> I tried, and it is now totally fubarred ;-)
> 
> I guess it is something with the apache https changes also working for svn
> now.
> 
> Redirecting
> to
> URL
> 'https://svn.freepascal.org/svn/fpc/branches/fixes_3_0':

Just relocate the check out?

For people using git-svn, the section 'General Case' here:
https://git.wiki.kernel.org/index.php/GitSvnSwitch should help.

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Marco van de Voort]

In our previous episode, Marco van de Voort said:
> > > http://www.stack.nl/~marcov/mergelogs26/backtrace.txt
> > 
> > BTW: Could you extend your scripts to include links for the revs to ViewVC?
> > Pattern is: 
> > https://svn.freepascal.org/cgi-bin/viewvc.cgi?view=revision=35495
> 
> I tried, and it is now totally fubarred ;-)

I guess it is something with the apache https changes also working for svn
now.

Redirecting
to
URL
'https://svn.freepascal.org/svn/fpc/branches/fixes_3_0':

which messes with my program.
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Marco van de Voort]

In our previous episode, Florian Kl?mpfl said:
> > bugreport has been merged, but there are still backtrace related fixes
> > unmerged:
> > 
> > http://www.stack.nl/~marcov/mergelogs26/backtrace.txt
> 
> BTW: Could you extend your scripts to include links for the revs to ViewVC?
> Pattern is: 
> https://svn.freepascal.org/cgi-bin/viewvc.cgi?view=revision=35495

I tried, and it is now totally fubarred ;-)
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Florian Klämpfl]

Am 01.05.2017 um 14:34 schrieb Marco van de Voort:
> In our previous episode, Bernd Mueller said:
>>> Only 3.0.2 linux for i386 CPU has the problem. 64-bit is OK.
>>
>> hmm, I don't get the lineinfo on x86-64 (Ubuntu 16.04/Mate, 64-Bit). 
>> armel and armhf are affected too.
> 
> Please test with the fixes branches. The series of revisions in the
> bugreport has been merged, but there are still backtrace related fixes
> unmerged:
> 
> http://www.stack.nl/~marcov/mergelogs26/backtrace.txt

BTW: Could you extend your scripts to include links for the revs to ViewVC?
Pattern is: 
https://svn.freepascal.org/cgi-bin/viewvc.cgi?view=revision=35495
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Nikolai Zhubr]

01.05.2017 14:35, Bernd Mueller:

On 05/01/2017 11:36 AM, Michael Van Canneyt wrote:


Only 3.0.2 linux for i386 CPU has the problem. 64-bit is OK.


hmm, I don't get the lineinfo on x86-64 (Ubuntu 16.04/Mate, 64-Bit).
armel and armhf are affected too.


Personally, for now I'll stick to 2.6.4 -- it works as expected at least 
on x86_64 linux here.


Besides, I've found my own mistake: when building an rpm package (with 
pascal program in this case), by default rpmbuild would choose to 
automagically strip the resulting binaries too much so this behaviour 
has to be suppressed (E.g. by __os_install_post %{nil} or whatever)



Thank you,
Nikolai



Regards, Bernd.

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Bernd Mueller]

On 05/01/2017 11:36 AM, Michael Van Canneyt wrote:


Only 3.0.2 linux for i386 CPU has the problem. 64-bit is OK.


hmm, I don't get the lineinfo on x86-64 (Ubuntu 16.04/Mate, 64-Bit). 
armel and armhf are affected too.


Regards, Bernd.

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Florian Klaempfl]

Am 01.05.2017 um 11:36 schrieb Michael Van Canneyt:
> 
> 
> On Mon, 1 May 2017, Nikolai Zhubr wrote:
> 
>> 01.05.2017 11:46, Florian Klämpfl:
>> [...]
 And I'm still getting just an address anyway...
>>>
>>>
>>> 3.0.x is broken in this regard (stack back trace on x86-64 elf targets), 
>> see other threads on the
>>> fpc mailing lists regarding this. This is why we discussing a quick as 
>> possibile 3.0.4 release.
>>
>> Ah, ok. Couldn't find any mentions of the issue (bad googling or
>> whatever) but anyway I'll probably have to wait for 3.0.4 then.
> 
> You don't need to wait:
> 
> Only 3.0.2 linux for i386 CPU has the problem. 64-bit is OK. And 3.0.0
> is OK in this aspect for all platforms.
> 
> So you can continue to work.

OPs, sorry, then I was wrong. I thought x86-64 elf is affected ...

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Michael Van Canneyt]

On Mon, 1 May 2017, Nikolai Zhubr wrote:


01.05.2017 11:46, Florian Klämpfl:
[...]

And I'm still getting just an address anyway...



3.0.x is broken in this regard (stack back trace on x86-64 elf targets), 

see other threads on the
fpc mailing lists regarding this. This is why we discussing a quick as 

possibile 3.0.4 release.

Ah, ok. Couldn't find any mentions of the issue (bad googling or 
whatever) but anyway I'll probably have to wait for 3.0.4 then.


You don't need to wait:

Only 3.0.2 linux for i386 CPU has the problem. 64-bit is OK. 
And 3.0.0 is OK in this aspect for all platforms.


So you can continue to work.

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Nikolai Zhubr]

01.05.2017 11:46, Florian Klämpfl:
[...]

And I'm still getting just an address anyway...



3.0.x is broken in this regard (stack back trace on x86-64 elf targets), see 
other threads on the
fpc mailing lists regarding this. This is why we discussing a quick as 
possibile 3.0.4 release.


Ah, ok. Couldn't find any mentions of the issue (bad googling or 
whatever) but anyway I'll probably have to wait for 3.0.4 then.


Thank you,
Nikolai



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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Florian Klämpfl]

Am 01.05.2017 um 10:40 schrieb Nikolai Zhubr:
> 01.05.2017 11:21, Michael Van Canneyt:
> [...]
>> No, but the units that we distribute do not have debug information
>> included.
>> So if the error is in the RTL, then there is no debug information.
> 
> Ok, right, but then I suppose it should show line number as soon as the 
> example is modified like this:
> 
> procedure Test3;
> var a, b: integer;
> begin
>   a := 1; b := 0;
>   writeln(a/b);
> end;
> 
> And I'm still getting just an address anyway...


3.0.x is broken in this regard (stack back trace on x86-64 elf targets), see 
other threads on the
fpc mailing lists regarding this. This is why we discussing a quick as 
possibile 3.0.4 release.

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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Nikolai Zhubr]

01.05.2017 11:21, Michael Van Canneyt:
[...]

No, but the units that we distribute do not have debug information
included.
So if the error is in the RTL, then there is no debug information.


Ok, right, but then I suppose it should show line number as soon as the 
example is modified like this:


procedure Test3;
var a, b: integer;
begin
  a := 1; b := 0;
  writeln(a/b);
end;

And I'm still getting just an address anyway...


Thank you,
Nikolai



If I run your program with a RTL compiled with debug info, I get:

home: >./st
Started...
Exception: $0046F571 CHECKINDEX, line 56 of
../objpas/classes/lists.inc
Done.

Michael.
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Re: [fpc-devel] BacktraceStrFunc on linux x86_64?

[Michael Van Canneyt]

On Mon, 1 May 2017, Nikolai Zhubr wrote:


Hello all,

I'm having some trouble to get BacktraceStrFunc to find line numbers.
This is with fpc 3.0.0 on linux x86_64 (Centos 7 if it matters).
If I compile the following example with

#fpc -gl tt.pas

I only get this output:

Started...
Exception:   $00455540
Done.

Evidently line info is somehow not present here.
Am I doing smth wrong or maybe lineinfo is not yet implemented for x86_64?


No, but the units that we distribute do not have debug information included.
So if the error is in the RTL, then there is no debug information.

If I run your program with a RTL compiled with debug info, I get:

home: >./st
Started...
Exception:   $0046F571  CHECKINDEX,  line 56 of 
../objpas/classes/lists.inc
Done.

Michael.
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