[PATCH] [dfsan] Initial set of custom functions and interceptors for libc.

[Evgeniy Stepanov]

================
Comment at: lib/dfsan/dfsan_custom.cc:21
@@ +20,3 @@
+#include <ctype.h>
+#include <dlfcn.h>
+#include <stdlib.h>
----------------
Alexey Samsonov wrote:
> We try to avoid including system headers in sanitizer tools, is probability an issue for dfsan?
It must be less of an issue for dfsan, because it does not have that many interceptors.
Custom functions do not need to (and, in fact, can not) match system header signature exactly.


http://llvm-reviews.chandlerc.com/D1397