[Bug target/83970] -mindirect-branch=thunk -fno-plt generates CET-incompatible thunk

[fw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83970

--- Comment #1 from Florian Weimer <fw at gcc dot gnu.org> ---
Bug 87412 is a related issue, but without -fno-plt.