[PATCH] D37025: [analyzer] Support more pointer arithmetic in bugreporter::getDerefExpr().

Artem Dergachev via Phabricator via cfe-commits cfe-commits at lists.llvm.org
Tue Aug 22 14:08:56 PDT 2017

NoQ created this revision.
Herald added a subscriber: eraman.

This patch adds support for a few more pointer arithmetic cases. For instance, when `p` is a null pointer, it would be possible to track that expressions like `*(++p) = 5` and `*(p + 2) = 5` are null pointer dereferences that are based on pointer `p`. The analyzer would later be able to display additional diagnostics to track where `p` has become null and why. I noticed these cases accidentally when i was working on https://reviews.llvm.org/D37023.



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