r314387 - Add the new -Wnull-pointer-arithmetic warnings to the release notes

Sylvestre Ledru via cfe-commits cfe-commits at lists.llvm.org
Thu Sep 28 01:00:18 PDT 2017

Author: sylvestre
Date: Thu Sep 28 01:00:18 2017
New Revision: 314387

URL: http://llvm.org/viewvc/llvm-project?rev=314387&view=rev
Add the new -Wnull-pointer-arithmetic warnings to the release notes

Differential Revision: https://reviews.llvm.org/D38186


Modified: cfe/trunk/docs/ReleaseNotes.rst
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/ReleaseNotes.rst?rev=314387&r1=314386&r2=314387&view=diff
--- cfe/trunk/docs/ReleaseNotes.rst (original)
+++ cfe/trunk/docs/ReleaseNotes.rst Thu Sep 28 01:00:18 2017
@@ -78,6 +78,11 @@ Improvements to Clang's diagnostics
   when the signed integer is coerced to an unsigned type for the comparison.
   ``-Wsign-compare`` was adjusted not to warn in this case.
+- ``-Wnull-pointer-arithmetic`` now warns about performing pointer arithmetic
+  on a null pointer. Such pointer arithmetic has an undefined behavior if the
+  offset is nonzero. It also now warns about arithmetic on a null pointer
+  treated as a cast from integer to pointer (GNU extension).
 Non-comprehensive list of changes in this release

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