jdoerfert added inline comments.
================
Comment at: clang/lib/CodeGen/CGCall.cpp:2174
+  }
+
   unsigned ArgNo = 0;
----------------
Even if null pointer is valid we should place dereferenceable.

We also could never place nonnull and let the middle-end make the 
dereferenceable -> nonnull deduction, though I don't see why we can't just add 
nonnull here.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D17993/new/

https://reviews.llvm.org/D17993

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