On Mon, Aug 03, 2020 at 05:01:18PM +0200, Florian Weimer wrote:
> * Daniel P. Berrangé:
>
> > Disabling LTO in the RPM spec confirms this and makes things pass
> > again. Hacking the makefiles to remove the -fno-lto option when
> > building the test suite binaries also fixes things.
> >
> > I don't see any mention of LD_PRELOAD being impacted by LTO in the
> > Fedora feature change page, but I can imagine how it would be.
>
> LTO should still export the same functions as before, and should not
> imply -fno-semantic-interposition by default. The linker plugin
> provides the necessary information to GCC. What you are observing could
> be the result of a toolchain bug.
Yeah (unless it is Clang which only supports -fno-semantic-interposition and
not anything else. LD_PRELOAD will simply not work with it).
Jakub
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