Fix warnings generated when running pytest #1789

Job	Run time
Windows Latest (Generator: Visual Studio 17 2022, Shared Library: true)	1m 41s
macOS	10m 25s
Test Big Endian	10m 23s
Ubuntu 20.04 (Build: Debug, Compilers: gcc-7/g++-7, Shared Library: false)	10m 5s
Ubuntu 20.04 (Build: Debug, Compilers: gcc-7/g++-7, Shared Library: true)	10m 10s
Ubuntu 20.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	10m 12s
Bazel	6m 48s
Ubuntu 20.04 (Build: Release, Compilers: gcc-7/g++-7, Shared Library: false)	10m 12s
Ubuntu 20.04 (Build: Release, Compilers: gcc-7/g++-7, Shared Library: true)	10m 11s
Ubuntu 20.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	10m 14s
Ubuntu 20.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	9m 55s
Ubuntu 20.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	10m 15s
ASAN	7m 40s
Windows Latest (Generator: MinGW Makefiles, Shared Library: true)	1m 48s
UBSAN	7m 40s
Windows Latest (Generator: Visual Studio 17 2022, Shared Library: false)	1m 26s
Windows Latest (Generator: MinGW Makefiles, Shared Library: false)	1m 34s
	2h 10m 39s

Provide feedback