Improve pod_vector, also reused by byte_buffer #18

	name: freebsd

	on: push

	jobs:
	build:
	# The CMake configure and build commands are platform agnostic and should work equally
	# well on Windows or Mac. You can convert this to a matrix build if you need
	# cross-platform coverage.
	# See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
	runs-on: macos-12

	steps:
	- uses: actions/checkout@v3
	with:
	submodules: 'recursive'
	- name: Build
	uses: vmactions/freebsd-vm@main
	with:
	usesh: true
	sync: rsync
	copyback: false
	prepare: \|
	pkg install -y git
	pkg install -y cmake
	pkg install -y python3
	# required by mbedtls-3.3.0
	pkg install -y py39-pip
	pip install jsonschema jinja2
	# install perl5, localtion: /usr/local/bin
	pkg search perl5
	pkg search perl5 \| cut -d' ' -f1 \| head -n 1 \| xargs pkg install -y
	perl -v
	run: \|
	echo Building on freebsd...
	cmake -G "Unix Makefiles" -S . -Bbuild -DYASIO_SSL_BACKEND=2
	cmake --build build --config Release
	echo run test icmp on freebsd...
	./build/tests/icmp/icmptest

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