search for: memorysanitizerbootstrappingclang

...ally cut down on the complexity of using msan. On Fri, Aug 31, 2018 at 5:43 AM Dean Michael Berris via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Thanks Vitaly and Peter, > > I went with a modified version of the instructions from > https://github.com/google/sanitizers/wiki/MemorySanitizerBootstrappingClang > — that’s a very helpful set of instructions! > > Cheers > > > On 31 Aug 2018, at 02:55, Vitaly Buka <vitalybuka at google.com> wrote: > > > > Another option is just to run corresponding script from > https://llvm.org/svn/llvm-project/zorg/trunk/zorg/buildbot...

...Thu, Aug 30, 2018 at 5:00 AM Peter Smith via llvm-dev < llvm-dev at lists.llvm.org> wrote: > Hello Dean, > > I've not done this myself for a while, I seem to remember it taking a > while to get right. When I did I found the page: > https://github.com/google/sanitizers/wiki/MemorySanitizerBootstrappingClang > useful. The other thing that might work is following the individual > cmake steps from > http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap-msan > . These aren't in the same structure as the monorepo but they may be > adaptable. > > My apologies if you'...

Hi llvm-dev, I'm trying to reproduce an msan failure in one of the bots, but I can't seem to get the right incantation of building LLVM with msan. Here's what I've been doing: 1) Build the toolchain in one build directory, including `compiler-rt`. 2) Build the toolchain again with the just built toolchain in step 1, but this time with `-DLLVM_USE_SANITIZER=MemoryWithOrigins`. I