https://github.com/Microsoft/microsoft-pdb/pull/27 https://github.com/Microsoft/microsoft-pdb/pull/27 is labelled cla-not-required, so it's probably not the bes

https://github.com/Microsoft/microsoft-pdb/pull/27 https://github.com/Microsoft/microsoft-pdb/pull/27 is labelled cla-not-required, so it's probably not the best example for "need to sign NDA/CLA for sending PR". But some other projects are so hardcore about CLA enforcement, they won't even accept one-letter typo-fixes without CLA signed.