Public bug reported:
$ gcc -v
...
gcc version 8.1.0 (Ubuntu 8.1.0-1ubuntu1)
$ sudo apt update && sudo apt upgrade
...
The following packages will be upgraded:
binutils binutils-common binutils-x86-64-linux-gnu cpp cpp-7 cpp-8 g++ g++-7
g++-8 gcc gcc-7 gcc-7-base gcc-8 gcc-8-base gdm3 gir1.2-gdm-1.0 lib32gcc1
lib32stdc++6 libasan4 libasan5 libatomic1 libbinutils libcc1-0 libcilkrts5
libgcc-7-dev libgcc-8-dev libgcc1 libgdm1 libgomp1 libitm1 liblsan0 libmpx2
libnautilus-extension1a libobjc-7-dev libobjc4 libquadmath0 libstdc++-7-dev
libstdc++-8-dev libstdc++6 libtsan0 libubsan0 libubsan1 nautilus
nautilus-data python3-distupgrade tzdata ubuntu-release-upgrader-core
ubuntu-release-upgrader-gtk
...
Setting up gcc-7 (7.3.0-27ubuntu1~18.04) ...
Setting up g++-7 (7.3.0-27ubuntu1~18.04) ...
Setting up gcc (4:7.3.0-3ubuntu2.1) ...
Setting up gcc-8 (8.2.0-1ubuntu2~18.04) ...
Setting up g++-8 (8.2.0-1ubuntu2~18.04) ...
Setting up g++ (4:7.3.0-3ubuntu2.1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
$ gcc -v
...
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
$ update-alternatives --display gcc
gcc - auto mode
link best version is /usr/bin/gcc-8
link currently points to /usr/bin/gcc-8
link gcc is /usr/bin/gcc
slave g++ is /usr/bin/g++
/usr/bin/gcc-7 - priority 700
slave g++: /usr/bin/g++-7
/usr/bin/gcc-8 - priority 800
slave g++: /usr/bin/g++-8
$ $ ll /usr/bin/gcc
lrwxrwxrwx 1 root root 5 Sep 17 09:07 /usr/bin/gcc -> gcc-7*
So after the upgrades update-alternatives shows that /usr/bin/gcc points
to /usr/bin/gcc-8 as it was before the upgrades, when in fact it points
to gcc-7.
** Affects: apt (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1794949
Title:
update-alternatives inconsistent after package upgrade
Status in apt package in Ubuntu:
New
Bug description:
$ gcc -v
...
gcc version 8.1.0 (Ubuntu 8.1.0-1ubuntu1)
$ sudo apt update && sudo apt upgrade
...
The following packages will be upgraded:
binutils binutils-common binutils-x86-64-linux-gnu cpp cpp-7 cpp-8 g++ g++-7
g++-8 gcc gcc-7 gcc-7-base gcc-8 gcc-8-base gdm3 gir1.2-gdm-1.0 lib32gcc1
lib32stdc++6 libasan4 libasan5 libatomic1 libbinutils libcc1-0 libcilkrts5
libgcc-7-dev libgcc-8-dev libgcc1 libgdm1 libgomp1 libitm1 liblsan0 libmpx2
libnautilus-extension1a libobjc-7-dev libobjc4 libquadmath0 libstdc++-7-dev
libstdc++-8-dev libstdc++6 libtsan0 libubsan0 libubsan1 nautilus
nautilus-data python3-distupgrade tzdata ubuntu-release-upgrader-core
ubuntu-release-upgrader-gtk
...
Setting up gcc-7 (7.3.0-27ubuntu1~18.04) ...
Setting up g++-7 (7.3.0-27ubuntu1~18.04) ...
Setting up gcc (4:7.3.0-3ubuntu2.1) ...
Setting up gcc-8 (8.2.0-1ubuntu2~18.04) ...
Setting up g++-8 (8.2.0-1ubuntu2~18.04) ...
Setting up g++ (4:7.3.0-3ubuntu2.1) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
$ gcc -v
...
gcc version 7.3.0 (Ubuntu 7.3.0-27ubuntu1~18.04)
$ update-alternatives --display gcc
gcc - auto mode
link best version is /usr/bin/gcc-8
link currently points to /usr/bin/gcc-8
link gcc is /usr/bin/gcc
slave g++ is /usr/bin/g++
/usr/bin/gcc-7 - priority 700
slave g++: /usr/bin/g++-7
/usr/bin/gcc-8 - priority 800
slave g++: /usr/bin/g++-8
$ $ ll /usr/bin/gcc
lrwxrwxrwx 1 root root 5 Sep 17 09:07 /usr/bin/gcc -> gcc-7*
So after the upgrades update-alternatives shows that /usr/bin/gcc
points to /usr/bin/gcc-8 as it was before the upgrades, when in fact
it points to gcc-7.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1794949/+subscriptions
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