Dear maintainer:

During a rebuild of all packages in unstable, this package failed to build.
Full build log is available here:

https://people.debian.org/~sanvila/build-logs/202610/

Note 1: The sample build log I'm providing happened on a system with 2 CPUs,
but, according to my tests, the probability of failure is a lot higher
on systems with 1 CPU, therefore I recommend GRUB_CMDLINE_LINUX="nr_cpus=1"
to reproduce. If this does not work I can offer a VM, as always.

Note 2: The failure seems to happen because of a race condition.
No claim of correctness, but the attached patch makes the package to build
ok again for me on the systems where it failed before.

Note 3: Trixie is also affected.


About the archive rebuild: The build was made on virtual machines from AWS,
using sbuild and a reduced chroot with only build-essential packages.

If you cannot reproduce the bug please contact me privately, as I
am willing to provide ssh access to a virtual machine where the bug is
fully reproducible.

If this is really a bug in one of the build-depends, please use
reassign and add an affects on src:process-cpp, so that this is still
visible in the BTS web page for this package.

Thanks.
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[...]
80% tests passed, 1 tests failed out of 5

Total Test time (real) =   0.54 sec

The following tests FAILED:
	  1 - posix_process_test (Failed)
Errors while running CTest
make[1]: *** [Makefile:74: test] Error 8
make[1]: Leaving directory '/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu'
dh_auto_test: error: cd obj-x86_64-linux-gnu && make -j2 test ARGS\+=--verbose ARGS\+=-j2 returned exit code 2
make: *** [debian/rules:8: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess failed with exit status 2
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