MacOS filesystem test fails on Linux

[ccope]

It looks like this test should only run on macOS, but it's causing failures for me on Ubuntu Linux 18.04. Deleting these lines fixed the build for me.

bee.lua/test/test_filesystem.lua

Lines 571 to 574 in 5819270

	if platform.OS ~= "macOS" then
	--TODO
	lu.assertEquals(fs.path('temp2.txt'):permissions() & USER_WRITE, 0)
	end

Info from the end of my build:
OS: Linux
Arch: x86_64
Compiler: GCC 7.5.0
CRT: libstdc++ 20191114 glibc 2.27
DEBUG: false

[actboy168]

This is a bug in gcc, please upgrade your gcc.

[ccope]

Ah ok, if it's a known issue maybe you can specify a minimum gcc version in your ReadMe file? This version of gcc is the only one that's available in the Ubuntu 18.04 apt repository, so it would inform users what version of Ubuntu they need to build your project.

[actboy168]

ubuntu18.04 supports gcc9
https://github.com/actboy168/bee.lua/runs/3092368974