[all-commits] [llvm/llvm-project] 01b10b: [Diagnostics] Teach -Wnull-dereference about addre...

[Dávid Bolvanský via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 01b10bc7b14963902405d202ac78cd88d44adbc5
      https://github.com/llvm/llvm-project/commit/01b10bc7b14963902405d202ac78cd88d44adbc5
  Author: Dávid Bolvanský <david.bolvansky at gmail.com>
  Date:   2019-11-07 (Thu, 07 Nov 2019)

  Changed paths:
    M clang/lib/Sema/SemaExpr.cpp
    M clang/test/Sema/exprs.c

  Log Message:
  -----------
  [Diagnostics] Teach -Wnull-dereference about address_space attribute

Summary:
Clang should not warn for:

> test.c:2:12: warning: indirection of non-volatile null pointer will be deleted,
>       not trap [-Wnull-dereference]
>     return *(int __attribute__((address_space(256))) *) 0;
>            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Solves PR42292.

Reviewers: aaron.ballman, rsmith

Reviewed By: aaron.ballman

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D69664