Michael J Gruber <michaeljgruber+grubix+git@gmail.com> writes:

>
> Yes, lto-wrapper calls make.
>
> Are we compiling test functions on the fly during the test? In that
> case we need to make sure that each test depends on the build
> products, or else the test helper compilation and its users might run
> in parallel ...

Yes, we compile C code on the fly during the run of the tests. I'm not
really clear on what race condition you are anticipating, as neither the
compilation nor the other parts of the test are directly run by make.
Execution is sequential within each T*.sh file. Unless gcc is returning
before it has finished compilation (which I think we'd all agree would
be gcc bug), I don't see how a race can arise there. One thing I can
imagine happening is gcc's recursive invocation of make somehow fails
under make -j, possibly something to do with violated assumptions about
the jobserver and/or environment variables.

d

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