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PR c++/33160: wrong "NULL used in arithmetic" warning

From: "Manuel López-Ibáñez" <lopezibanez at gmail dot com>
To: "GCC Patches" <gcc-patches at gcc dot gnu dot org>
Date: Sat, 10 Nov 2007 19:53:57 +0100
Subject: PR c++/33160: wrong "NULL used in arithmetic" warning

:ADDPATCH c++/diagnostics:

The following patch fixes a wrong "NULL used in arithmetic" warning.
However, I wonder whether this is the best solution. Alternatively, we
could modify POINTER_TYPE_P to return 1 for (TYPE_MODE (TREE_TYPE (t))
== ptr_mode). Any other ideas?

(I must admit that I am not sure what __attribute__(mode(pointer))
means exactly).

Anyway, bootstrapped and regression tested with --enable-languages=all
on x86_64-unknown-linux-gnu

2007-11-10  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
  PR c++/33160
cp/
 * typeck.c (build_binary_op): Check for mode(pointer).

testsuite/
  * g++.dg/warn/pr33160.C: New.

Attachment: fix-pr33160.diff
Description: Text document

Follow-Ups:
- Re: PR c++/33160: wrong "NULL used in arithmetic" warning
  - From: Mark Mitchell

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