[PATCH] D19668: [ubsan] Minimize size of data for type_mismatch

[Kostya Serebryany via llvm-commits]

kcc added a comment.

Sorry, I missed this CL. 
Could you please repeat why we need backwards compatibility?

I would rather prefer to not have this complexity, but instead make sure we don't mix old API and the new one, 
e.g. the same way we do it in asan. (see asan/asan_init_version.h)


http://reviews.llvm.org/D19668