From: "John Wiegley" <johnw@newartisans.com>
To: emacs-devel@gnu.org
Subject: Re: commit 108757 breaks clang build on so x
Date: Fri, 29 Jun 2012 17:20:13 -0500 [thread overview]
Message-ID: <m2sjdd92w2.fsf@newartisans.com> (raw)
In-Reply-To: <7ifw9epolx.fsf@mack.tetzco.de> (Kai Tetzlaff's message of "Fri, 29 Jun 2012 09:24:26 +0200")
>>>>> Kai Tetzlaff <kai.tetzlaff@web.de> writes:
> It seems that
> __attribute__((no_address_safety_analysis))
> is not supported by all clang versions. The attached patch contains an
> improved version of the check which hopefully fixes the problem (it does so
> here).
Thanks for catching that, Kai. I forgot that the address sanitizer was only
introduced in 3.1.
FYI- The sanitizer only works up to the temacs build. The dumped Emacs that
results will not work because static construction/destruction fails in the
ASan libraries. Until I can build Clang with shared ASan libraries (I've
entered a bug against this in their bugtracker), running a fully sanitized
Emacs is still a pipe dream.
It has already found one legitimate stack overwrite in charset.c. I'm still
testing the fix.
John
prev parent reply other threads:[~2012-06-29 22:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-29 7:24 commit 108757 breaks clang build on os x Kai Tetzlaff
2012-06-29 22:20 ` John Wiegley [this message]
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