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Re: [PATCH] Disable libsanitizer before darwin10

From: Iain Sandoe <iain at codesourcery dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Cc: Jack Howarth <howarth at bromo dot med dot uc dot edu>, <jakub at redhat dot com>, <dodji at redhat dot com>, <kcc at google dot com>, <dvyukov at google dot com>, <mikestump at comcast dot net>
Date: Mon, 11 Feb 2013 16:06:21 +0000
Subject: Re: [PATCH] Disable libsanitizer before darwin10
References: <20130211155501.GA31314@bromo.med.uc.edu>

On 11 Feb 2013, at 15:55, Jack Howarth wrote:

>  Iain Sandoe discovered that on intel darwin9, the asan testsuite suffers hundreds of 
> failures due to the absence of dispatch calls (Grand Central Dispatch) prior to darwin10.
> The attached patch disables building libsanitizer on darwin8 and darwin9 until upstream
> decides to support the earlier darwin releases. Bootstrap and regression tested on
> x86_64-apple-darwin12. Okay for gcc trunk?

note that making Darwin9 work is not that difficult - simply avoid the GCD calls (example hack attached).

However, the question is open as to whether upstream is willing to include code to cater for older Darwin (TBD).  
If such a change would be OK there, then the attached could be cleaned up/amended.

(it reduces the fails on i686-Darwin9 from 'all' asan to ~10 each for C on x86/x86_64 and similar for C++)

Iain

Attachment: 195915-asan-d9-hack.txt
Description: Text document

References:
- [PATCH] Disable libsanitizer before darwin10
  - From: Jack Howarth

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