[Bug 1955044] Re: [SRU] /usr/include/glibmm-2.4/glibmm/variant.h:956:24: error: expected unqualified-id before ‘)’ token (with GCC 11 in C++20 mode)
Jeremy Bicha
1955044 at bugs.launchpad.net
Sun Feb 13 07:39:56 UTC 2022
** Changed in: glibmm2.4 (Ubuntu)
Status: New => Fix Released
** Also affects: glibmm2.4 (Ubuntu Impish)
Importance: Undecided
Status: New
** Changed in: glibmm2.4 (Ubuntu Impish)
Status: New => Triaged
** Description changed:
- There are compilation errors when I try to include the <glibmm.h> header under C++20 and run default compiler, GCC 11.
- This is reproducible in Ubuntu 21.10 (Impish Indri) or Ubuntu devel (Jammy Jellyfish) but not in Ubuntu 21.04 (Impish Indri) or Debian unstable. And this is effecting building of the telegram-desktop package.
+ Impact
+ ======
+ It's not possible to build using the <glibmm.h> header under C++20 with the default compiler, GCC 11. This is interfering with being able to build telegram-desktop.
- mymedia at barberry:~$ g++ -x c++ -std=gnu++20 -include glibmm.h - <<< 'int main(){}' `pkg-config --cflags --libs glibmm-2.4` -o /dev/null
+ This was fixed for Ubuntu 22.04 LTS with 2.66.1
+
+ Demonstration of the Issue
+ ==========================
+ $ g++ -x c++ -std=gnu++20 -include glibmm.h - <<< 'int main(){}' `pkg-config --cflags --libs glibmm-2.4` -o /dev/null
In file included from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant.h:956:24: error: expected unqualified-id before ‘)’ token
956 | Variant<VariantBase>();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1017:25: error: expected unqualified-id before ‘)’ token
1017 | Variant< Variant<T> >();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1070:26: error: expected unqualified-id before ‘)’ token
1070 | Variant<Glib::ustring>();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1240:24: error: expected unqualified-id before ‘)’ token
1240 | Variant<std::string>();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1286:30: error: expected unqualified-id before ‘)’ token
1286 | Variant< std::pair<K, V> >()
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1335:29: error: expected unqualified-id before ‘)’ token
1335 | Variant< std::vector<T> >()
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1404:41: error: expected unqualified-id before ‘)’ token
1404 | Variant< std::vector<Glib::ustring> >();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1530:39: error: expected unqualified-id before ‘)’ token
1530 | Variant< std::vector<std::string> >();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1606:29: error: expected unqualified-id before ‘)’ token
1606 | Variant< std::map<K, V> >()
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1679:33: error: expected unqualified-id before ‘)’ token
1679 | Variant<std::tuple<Types...>>()
| ^
In file included from /usr/include/glibmm-2.4/glibmm/variant.h:1742,
from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:23:17: error: expected unqualified-id before ‘)’ token
23 | Variant<bool>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:66:26: error: expected unqualified-id before ‘)’ token
66 | Variant<unsigned char>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:109:19: error: expected unqualified-id before ‘)’ token
109 | Variant<gint16>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:152:20: error: expected unqualified-id before ‘)’ token
152 | Variant<guint16>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:195:19: error: expected unqualified-id before ‘)’ token
195 | Variant<gint32>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:244:20: error: expected unqualified-id before ‘)’ token
244 | Variant<guint32>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:287:19: error: expected unqualified-id before ‘)’ token
287 | Variant<gint64>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:330:20: error: expected unqualified-id before ‘)’ token
330 | Variant<guint64>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:373:19: error: expected unqualified-id before ‘)’ token
373 | Variant<double>()
| ^
In file included from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant.h:1751:1: error: no declaration matches ‘Glib::Variant<Glib::Variant<T> >::Variant()’
1751 | Variant< Variant<T> >::Variant()
| ^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant.h:1026:12: note: candidate is: ‘Glib::Variant<Glib::Variant<T> >::Variant(GVariant*, bool)’
1026 | explicit Variant< Variant<T> >(GVariant* castitem, bool take_a_reference = false);
| ^~~~~~~~~~~~~~~~~~~~~
/usr/include/glibmm-2.4/glibmm/variant.h:1009:7: note: ‘class Glib::Variant<Glib::Variant<T> >’ defined here
1009 | class Variant< Variant<T> > : public VariantContainerBase
| ^~~~~~~~~~~~~~~~~~~~~
- [Test Plan]
+ Test Plan
+ =========
Run the following two terminal commands in Bash:
1. sudo apt-get satisfy libglibmm-2.4-dev 'build-essential | g++'
2. g++ -x c++ -std=gnu++20 -include glibmm.h - <<< 'int main(){}' `pkg-config --cflags --libs glibmm-2.4` -o /dev/null
Make sure the latter command produced no output and ended with zero exit
code.
- [Where problems could occur]
+ Where problems could occur
+ ===========================
The proposed patch only modifies C++ headers. It may affect only building other packages from source or developer experience.
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https://bugs.launchpad.net/bugs/1955044
Title:
[SRU] /usr/include/glibmm-2.4/glibmm/variant.h:956:24: error: expected
unqualified-id before ‘)’ token (with GCC 11 in C++20 mode)
Status in glibmm2.4 package in Ubuntu:
Fix Released
Status in glibmm2.4 source package in Impish:
Triaged
Bug description:
Impact
======
It's not possible to build using the <glibmm.h> header under C++20 with the default compiler, GCC 11. This is interfering with being able to build telegram-desktop.
This was fixed for Ubuntu 22.04 LTS with 2.66.1
Demonstration of the Issue
==========================
$ g++ -x c++ -std=gnu++20 -include glibmm.h - <<< 'int main(){}' `pkg-config --cflags --libs glibmm-2.4` -o /dev/null
In file included from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant.h:956:24: error: expected unqualified-id before ‘)’ token
956 | Variant<VariantBase>();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1017:25: error: expected unqualified-id before ‘)’ token
1017 | Variant< Variant<T> >();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1070:26: error: expected unqualified-id before ‘)’ token
1070 | Variant<Glib::ustring>();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1240:24: error: expected unqualified-id before ‘)’ token
1240 | Variant<std::string>();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1286:30: error: expected unqualified-id before ‘)’ token
1286 | Variant< std::pair<K, V> >()
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1335:29: error: expected unqualified-id before ‘)’ token
1335 | Variant< std::vector<T> >()
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1404:41: error: expected unqualified-id before ‘)’ token
1404 | Variant< std::vector<Glib::ustring> >();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1530:39: error: expected unqualified-id before ‘)’ token
1530 | Variant< std::vector<std::string> >();
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1606:29: error: expected unqualified-id before ‘)’ token
1606 | Variant< std::map<K, V> >()
| ^
/usr/include/glibmm-2.4/glibmm/variant.h:1679:33: error: expected unqualified-id before ‘)’ token
1679 | Variant<std::tuple<Types...>>()
| ^
In file included from /usr/include/glibmm-2.4/glibmm/variant.h:1742,
from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:23:17: error: expected unqualified-id before ‘)’ token
23 | Variant<bool>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:66:26: error: expected unqualified-id before ‘)’ token
66 | Variant<unsigned char>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:109:19: error: expected unqualified-id before ‘)’ token
109 | Variant<gint16>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:152:20: error: expected unqualified-id before ‘)’ token
152 | Variant<guint16>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:195:19: error: expected unqualified-id before ‘)’ token
195 | Variant<gint32>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:244:20: error: expected unqualified-id before ‘)’ token
244 | Variant<guint32>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:287:19: error: expected unqualified-id before ‘)’ token
287 | Variant<gint64>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:330:20: error: expected unqualified-id before ‘)’ token
330 | Variant<guint64>()
| ^
/usr/include/glibmm-2.4/glibmm/variant_basictypes.h:373:19: error: expected unqualified-id before ‘)’ token
373 | Variant<double>()
| ^
In file included from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant.h:1751:1: error: no declaration matches ‘Glib::Variant<Glib::Variant<T> >::Variant()’
1751 | Variant< Variant<T> >::Variant()
| ^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/glibmm-2.4/glibmm/containerhandle_shared.h:23,
from /usr/include/glibmm-2.4/glibmm/arrayhandle.h:21,
from /usr/include/glibmm-2.4/glibmm.h:92,
from <command-line>:
/usr/include/glibmm-2.4/glibmm/variant.h:1026:12: note: candidate is: ‘Glib::Variant<Glib::Variant<T> >::Variant(GVariant*, bool)’
1026 | explicit Variant< Variant<T> >(GVariant* castitem, bool take_a_reference = false);
| ^~~~~~~~~~~~~~~~~~~~~
/usr/include/glibmm-2.4/glibmm/variant.h:1009:7: note: ‘class Glib::Variant<Glib::Variant<T> >’ defined here
1009 | class Variant< Variant<T> > : public VariantContainerBase
| ^~~~~~~~~~~~~~~~~~~~~
Test Plan
=========
Run the following two terminal commands in Bash:
1. sudo apt-get satisfy libglibmm-2.4-dev 'build-essential | g++'
2. g++ -x c++ -std=gnu++20 -include glibmm.h - <<< 'int main(){}' `pkg-config --cflags --libs glibmm-2.4` -o /dev/null
Make sure the latter command produced no output and ended with zero
exit code.
Where problems could occur
===========================
The proposed patch only modifies C++ headers. It may affect only building other packages from source or developer experience.
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https://bugs.launchpad.net/ubuntu/+source/glibmm2.4/+bug/1955044/+subscriptions
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