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 from6609892a2d68e07da3e5092507a730Information 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.