I think all these are fixed. The flag isn't used anymore IIRC and there
are no such autopkgtest failures currently. I'll close the bugs.
** Changed in: libarchive (Ubuntu)
Status: New => Fix Released
** Changed in: libxml2 (Ubuntu)
Status: New => Fix Released
** Changed in: gnutls2
We were seeing various autopkgtest failures related to the packages
above.
Mostly stemming from the fact that valgrind throws errors when running
binaries compiled with the -fstack-clash-protection option.
There are earlier reports of this at:
https://bugzilla.redhat.com/show_bug.cgi?id=1522678