phoebewang wrote: > > > @phoebewang and @lvwr I also noticed that there is this code in LLVM: > > > https://github.com/llvm/llvm-project/blob/9ba6672b9f0e82a1f6d4100dc832c84447ea545c/llvm/lib/Transforms/Utils/ModuleUtils.cpp#L202-L214 > > > > > > . As far as I can tell, this code is not triggered when I build the Linux > > > kernel with `-fsanitize=kcfi`. > > > When is this code triggered? And do you think it is necessary to > > > additionally implement the arity-enhancement to this code? > > > > > > I'm not familar with KCFI. I find it's added by @samitolvanen in > > [e1c36bd](https://github.com/llvm/llvm-project/commit/e1c36bde0551977d4b2efae032af6dfc4b2b3936). > > I think you should triger it with attached test case. > > It looks to me like this code might be triggered in some LTO configurations, > and/or when linking code compiled from multiple source languages with the > expectation that the KCFI type IDs will be compatible. Is my understanding > correct?
Looks like the latter, see https://github.com/llvm/llvm-project/commit/71c7313f42d2b6063fea09854cf4fc46fd0627e1 https://github.com/llvm/llvm-project/pull/117121 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
