Hi Greg, > > For us it seems applying the following 4 mainline patches makes 4.19.x > > branch perf compile with GCC-9: > > > > 4d0f16d059ddb91424480d88473f7392f24aebdc: perf ui helpline: Use > > strlcpy() as a shorter form of strncpy() + explicit set nul > > b6313899f4ed2e76b8375cf8069556f5b94fbff0: perf help: Remove needless > > use of strncpy() > > 5192bde7d98c99f2cd80225649e3c2e7493722f7: perf header: Fix unchecked > > usage of strncpy() > > 97acec7df172cd1e450f81f5e293c0aa145a2797: perf data: Fix 'strncat may > > truncate' build failure with recent gcc > > > > I also checked that 4.19.49 compiles fine with GCC 9, although with a > > lot of warnings, mostly from objtool, like "warning: objtool: > > sock_register()+0xd: sibling call from callable instruction with > > modified stack frame". But it's a start. > > > > Can we apply the above-mentioned patches, please? > I'll look into these after the next round of kernels are released. I Did you by any chance forget to queue these patches? :) (the build is still broken for GCC 9.1) > guess I'll go find a distro that has gcc9 on it to actually test > things... BTW, Arch already has GCC 9.1 package, so no need to compile your own anymore for testing: https://www.archlinux.org/packages/core/x86_64/gcc/ Regards, Ignat
