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#3519 test-host failures in snapshot only
As can be seen on the snapshots page, test-host results in some failures for aarch64-linux-gnu (a Raspi 4 running Debian GNU/Linux).
Weirdly, it fails for the snapshot _only_: when I do an svn checkout on that machine, configure and do "make test-host" in support/regression, all tests pass.
While I have seen build failures for snapshots that did not happen during a "normal" in-tree build, this is the first time I actually see host regression tests failing for snapshots, but pass otherwise.
Looking at this a bit closer, apparently inline functions do not get inlined, so linking fails. The host compiler is allowed to not inline inline functions, so the test failing is fine.
But why does it make a difference for snapshots vs. non-snapshot?