rjmccall added inline comments.

================
Comment at: lib/CodeGen/CodeGenFunction.h:380
+  /// True if sanitizer checks for current pointer value are generated.
+  bool PointerChecksAreEmitted = false;
+
----------------
I don't think this is a good way of doing this.  Using global state makes this 
unnecessarily difficult to reason about and can have unintended effects.  For 
example, you are unintentionally suppressing any checks that would be done as 
part of e.g. evaluating default arguments to the default constructor.

You should pass a parameter down that says whether checks are necessary.  You 
can also use that parameter to e.g. suppress checks when constructing local 
variables and temporaries, although you may already have an alternative 
mechanism for doing that.


Repository:
  rC Clang

https://reviews.llvm.org/D49589



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