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Old 05-03-2011, 10:09 AM
Didier Raboud
 
Default Mass GCC 4.6 bug filling ( Bug#624997: writerperfect: FTBFS: Style.hxx:36:45: error: 'NULL' was not declared in this scope)

Sandro Tosi wrote:

> Who do you expect to send such communication? the gcc maintainer? good
> luck with that.

Do we really need that type of public bashing on -devel ? Your gripes with
Matthias are notorious enough to avoid the need to repeat them all over the
place, IHMO.


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Old 05-03-2011, 10:47 AM
Bernd Zeimetz
 
Default Mass GCC 4.6 bug filling ( Bug#624997: writerperfect: FTBFS: Style.hxx:36:45: error: 'NULL' was not declared in this scope)

On 05/03/2011 12:09 PM, Didier Raboud wrote:
> Sandro Tosi wrote:
>
>> Who do you expect to send such communication? the gcc maintainer? good
>> luck with that.
>
> Do we really need that type of public bashing on -devel ? Your gripes with
> Matthias are notorious enough to avoid the need to repeat them all over the
> place, IHMO.

While we don't need this kind of bashing, the issue needs to be fixed
somehow, indeed.


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http://bzed.de http://www.debian.org
GPG Fingerprints: ECA1 E3F2 8E11 2432 D485 DD95 EB36 171A 6FF9 435F


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Old 05-03-2011, 03:21 PM
Matthias Klose
 
Default Mass GCC 4.6 bug filling ( Bug#624997: writerperfect: FTBFS: Style.hxx:36:45: error: 'NULL' was not declared in this scope)

On 05/03/2011 11:32 AM, Charles Plessy wrote:

the recent archive rebuild uncovered a large number of GCC 4.6 build failures
(that could been already forseen from Launchpad). In the long run, I find very
impressive the contribution from the major Linux distribution to their upstreams
for keeping them up to date with recent toolchains.

However, given my experience of repetitive patching cycles with earlier GCC
updates, it would be pointless to spend a lot of energy updating our packages
now if it is only to realise in few weeks that the next GCC update would
require yet another header.


Please note that the bug reports for build failures with GCC 4.5 were filed 16
months ago [1]. So you had the chance to address these in the previous release
cycle too. Lucas only had the resources for a rebuild test now, so that's why
you didn't see these earlier (a rough list can be at [2]). Results from the
Ubuntu natty rebuild test did differ too much in package version numbers to be
used for a bug filing in Debian [3].


I am sure the QA team would welcome rebuild tests on other architectures too.
Feedback from some port maintainers about the usability of 4.6 is still
outstanding, so I can't say which architecture will end up with which compiler
version.


GCC usually has a twelve months release cycle, so you'll see the next set of
missing include headers in spring 2012, and in Debian, if unstable isn't frozen
by this time.


Matthias

[1]
http://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=ftbfs-gcc-4.5;users=debian-gcc@lists.debian.org
[2]
http://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=ftbfs-gcc-4.6;users=debian-gcc@lists.debian.org

[3] https://launchpad.net/ubuntu/+bugs?field.tag=ftbfs (covering all ftbfs)


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Old 05-03-2011, 10:10 PM
Charles Plessy
 
Default Mass GCC 4.6 bug filling ( Bug#624997: writerperfect: FTBFS: Style.hxx:36:45: error: 'NULL' was not declared in this scope)

Le Tue, May 03, 2011 at 05:21:06PM +0200, Matthias Klose a écrit :
>
> GCC usually has a twelve months release cycle, so you'll see the
> next set of missing include headers in spring 2012, and in Debian,
> if unstable isn't frozen by this time.

Thanks for the information.

I just got a bug from you explaining some changes (= more FTBFS) about 4.6.1.
Will there be similar 4.6.x changes in the future ? Is there a cross-distro
plan to focus on GCC 4.6, like linux-2.6.32 was singled out for long-term
maintaince ?

Perhpas these questions seem very basic, but I think that a bit of perspectives
would be helpful.

Cheers,

--
Charles


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Old 05-03-2011, 10:24 PM
Cyril Brulebois
 
Default Mass GCC 4.6 bug filling ( Bug#624997: writerperfect: FTBFS: Style.hxx:36:45: error: 'NULL' was not declared in this scope)

Hi,

(not a gcc maintainer)

Charles Plessy <plessy@debian.org> (04/05/2011):
> I just got a bug from you explaining some changes (= more FTBFS)
> about 4.6.1. Will there be similar 4.6.x changes in the future ?

my reading of it is that to prevent too many FTBFSes while introducing
4.6 in Debian, some changes were delayed (“reverted through Debian
patches”) until 4.6.1 is released and uploaded.

Assuming you're talking about -Wunused-*, those are mentioned on the
upstream upgrading / porting page:
http://gcc.gnu.org/gcc-4.6/changes.html

Quoting:
| New -Wunused-but-set-variable and -Wunused-but-set-parameter warnings
| were added for C, C++, Objective-C and Objective-C++. These warnings
| diagnose variables respective parameters which are only set in the
| code and never otherwise used. Usually such variables are useless and
| often even the value assigned to them is computed needlessly,
| sometimes expensively. The -Wunused-but-set-variable warning is
| enabled by default by -Wall flag and -Wunused-but-set-parameter by
| -Wall -Wextra flags.

I don't think more changes are planned for the 4.6.x series; you'll
have to wait for 4.7 to get more changes.

Mraw,
KiBi.
 
Old 05-03-2011, 10:42 PM
Matthias Klose
 
Default Mass GCC 4.6 bug filling ( Bug#624997: writerperfect: FTBFS: Style.hxx:36:45: error: 'NULL' was not declared in this scope)

On 05/04/2011 12:24 AM, Cyril Brulebois wrote:

Hi,

(not a gcc maintainer)

Charles Plessy<plessy@debian.org> (04/05/2011):

I just got a bug from you explaining some changes (= more FTBFS)
about 4.6.1. Will there be similar 4.6.x changes in the future ?


my reading of it is that to prevent too many FTBFSes while introducing
4.6 in Debian, some changes were delayed (“reverted through Debian
patches”) until 4.6.1 is released and uploaded.

Assuming you're talking about -Wunused-*, those are mentioned on the
upstream upgrading / porting page:
http://gcc.gnu.org/gcc-4.6/changes.html

Quoting:
| New -Wunused-but-set-variable and -Wunused-but-set-parameter warnings
| were added for C, C++, Objective-C and Objective-C++. These warnings
| diagnose variables respective parameters which are only set in the
| code and never otherwise used. Usually such variables are useless and
| often even the value assigned to them is computed needlessly,
| sometimes expensively. The -Wunused-but-set-variable warning is
| enabled by default by -Wall flag and -Wunused-but-set-parameter by
| -Wall -Wextra flags.

I don't think more changes are planned for the 4.6.x series; you'll
have to wait for 4.7 to get more changes.


yes, thanks for the clarification. bugs for these kind of errors are now filed,
see [1], although I was a bit sloppy scanning the build logs, so there are some
false positives.


Matthias

[1]
http://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=ftbfs-werror;users=debian-gcc@lists.debian.org



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