3db93c351d
Most Linux distributions are enabling this these days and it does protect against real world vulnerabilities as demonstrated by CVE-2018-16864 and CVE-2018-16865. Fix #53753. Information on llvm version support gleaned from https://github.com/llvm/llvm-project/commit/6609892a2dcdd1a4f6adefe191b55524861f020c https://github.com/llvm/llvm-project/commit/68e07da3e5d5175e24caa309e2b13cb333365c8c https://github.com/llvm/llvm-project/commit/092507a730fa4fad6dbe544cd139cfb7e8179aa4 Information on gcc version support a lot harder to gather, but both 32bit and 64bit arm do appear to be supported based on the test suite.