[PATCH] D98798: Produce warning for performing pointer arithmetic on a null pointer.

[Eli Friedman via Phabricator via cfe-commits]

efriedma added a comment.

Please add a test for `(char*)0-(char*)0`.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D98798/new/

https://reviews.llvm.org/D98798

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