Fix C++ atomic.

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Status Job ID Name Coverage
  Build
passed #5547
docker
build:container

00:00:21

passed #5546
cmake
build:prrt

00:00:33

 
  Test
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bash
test:prrt_functional

00:00:06

passed #5548
valgrind
test:prrt_mem

00:00:20

passed #5550
python3 bash
test:prrt_python_bindings

00:00:17

 
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python3
deploy:pypi

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