On Tue, 13 Oct 2026 at 11:36, Alexander Potapenko <[email protected]> wrote: > > > +ifdef CONFIG_HAVE_KCSAN_RUSTC > > +# The minimum supported rustc's LLVM supports all of these options. > > +rustc-param = -Cllvm-args=-$(1) > > +kcsan-rustflags := -Zsanitizer=thread \ > > + $(call rustc-param,tsan-compound-read-before-write=1) \ > > + $(call rustc-param,tsan-distinguish-volatile=1) > > Do we also need -fno-optimize-sibling-calls here?
It's optional - I added it for Clang so that stack traces are always complete. But rustc doesn't have an equivalent option (neither do some of the hidden llvm options work). So this is the best we can do for now. I might want to note it in the commit message, though.
