[PATCH] D20741: [LibFuzzer] Fix weak linking issues building tests under OSX.

[Kostya Serebryany via llvm-commits]

kcc added a comment.

Let's try dlsym. Let's create a separate file for that. 
BTW, I am about to add one more use of a weak __sanitizer_* function in FuzzerIO.cpp (shouldn't be a problem)


http://reviews.llvm.org/D20741