[charleslmunger]

Very cool. Hardware asan did not catch the pointer provenance bug in the previous implementation of that code because it relies on tag bits, and the produced pointer was bit-identical to the intended one. It sounds like fil-c would have caught it because the pointer capabilities are stored elsewhere.

[kragen]

What hardware do you need for hardware Asan? I'm so out of the loop that I haven't heard of it before.

[saagarjha]

TBI: https://clang.llvm.org/docs/HardwareAssistedAddressSanitizer...