__libc_vfork not found in libpthread.so.0 for clangbackend

[KOLANICH]

KOLANICH@KOLANICH:~/$ /usr/lib/x86_64-linux-gnu/qtcreator/libexec/clangbackend
/usr/lib/x86_64-linux-gnu/qtcreator/libexec/clangbackend: symbol lookup error: /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../../libpthread.so.0: undefined symbol: __libc_vfork, version GLIBC_PRIVATE
KOLANICH@KOLANICH:~/$ dpkg -S /usr/lib/x86_64-linux-gnu/qtcreator/libexec/clangbackend
qtcreator: /usr/lib/x86_64-linux-gnu/qtcreator/libexec/clangbackend
KOLANICH@KOLANICH:~/$ readelf -s /usr/lib/x86_64-linux-gnu/qtcreator/libexec/../../libpthread.so.0 | grep __libc_vfork
    74: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __libc_vfork@GLIBC_PRIVATE (13)
   679: 0000000000000000 0 FUNC GLOBAL DEFAULT UND __libc_vfork@@GLIBC_PRIVA

[KOLANICH (kolanich)]

KOLANICH@KOLANICH:~$ readelf -d /lib/x86_64-linux-gnu/libc.so.6 | grep __libc_vfork
KOLANICH@KOLANICH:~$

[KOLANICH (kolanich)]

KOLANICH@KOLANICH:~$ readelf -s /lib/x86_64-linux-gnu/libc.so.6 | grep __libc_vfork
KOLANICH@KOLANICH:~$

[KOLANICH (kolanich)]

There were extra libs in my system (from previous version of Ubuntu). After I have fixed them, everything got OK.

[Kai Kasurinen (kai-kasurinen)]

This bug report is being closed due to your last comment regarding this being fixed. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.

[Ankur Singh (ankursingh2101)]

@kolanich: Kindly help and let me know how did you fix the issue. I am using Ubuntu 20.04 which is giving me the same error, but not in Ubuntu 18.04:
/lib/libpthread.so.0: undefined symbol: __libc_vfork, version GLIBC_PRIVATE