fix type mismatch on aarch64-darwin #63

	name: Linux

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	jobs:
	build:
	strategy:
	matrix:
	compiler: [g++-10, clang++-10]

	runs-on: ubuntu-latest
	env:
	CXX: ${{matrix.compiler}}

	steps:
	- uses: actions/checkout@v2

	- name: Check environment
	run: \|
	g++-10 --version
	clang++-10 --version
	cmake --version
	make --version

	- name: Make build directory
	run: cmake -E make_directory build

	- name: CMake
	env:
	CXXFLAGS: -Wall -Wpedantic -Wextra -Werror
	run: cmake -B build -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=$CXX

	- name: Make
	shell: bash
	run: make -C build

	- name: Test
	run: build/test/voxelio-test

Provide feedback