Date: Thu, 11 Sep 2014 18:42:02 -0500 From: Bryan Drewery <bdrewery@FreeBSD.org> To: Adam Weinberger <adamw@adamw.org> Cc: svn-ports-head@freebsd.org, svn-ports-all@freebsd.org, Gerald Pfeifer <gerald@pfeifer.com>, ports-committers@freebsd.org Subject: Re: svn commit: r367883 - in head: Mk lang/gcc Message-ID: <5412334A.9070603@FreeBSD.org> In-Reply-To: <0496640B-F902-401E-B02E-E85506A2FFF5@adamw.org> References: <201409101909.s8AJ9wpY028698@svn.freebsd.org> <5410AEB5.9050205@FreeBSD.org> <alpine.LSU.2.11.1409102231390.2867@tuna.site> <54122471.70109@FreeBSD.org> <0496640B-F902-401E-B02E-E85506A2FFF5@adamw.org>
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On 9/11/2014 6:28 PM, Adam Weinberger wrote:
> On 11 Sep, 2014, at 18:38, Bryan Drewery <bdrewery@FreeBSD.org> wrote:
>=20
>> On 9/10/2014 4:32 PM, Gerald Pfeifer wrote:
>>> On Wed, 10 Sep 2014, Bryan Drewery wrote:
>>>> Thanks for writing up a summary of changes. Very useful. I learned=20
>>>> about AddressSanitizer being supported.
>>>
>>> You are very welcome! (I haven't tested AddressSanitizer myself,=20
>>> but think I recall a positive report by a user. If it does not=20
>>> work properly we might look into lang/gcc49 or lang/gcc5.)
>>
>> Actually it fails to link. Both clang and gcc complain about missing
>> libasan symbols.
>>
>> I find no providers of libasan in any of the gcc, llvm or clang packag=
es.
>>
>> It appears it is a submodule of both gcc and clang. So it likely just
>> need to be hooked up in the build for gcc.
>>
>> Simple test case:
>>
>> # echo 'int main() {return 0;}'|g++5 -Wall -fsanitize=3Daddress -o
>> /dev/null -x c -
>> /usr/local/bin/ld: cannot find -lasan
>> collect2: error: ld returned 1 exit status
>=20
> From lang/gcc/work/gcc-4.8.3/libsanitizer/configure.tgt:
> case "${target}" in
> x86_64-*-linux* | i?86-*-linux*)
> if test x$ac_cv_sizeof_void_p =3D x8; then
> TSAN_SUPPORTED=3Dyes
> fi
> ;;
> powerpc*le-*-linux*)
> UNSUPPORTED=3D1
> ;;
> powerpc*-*-linux*)
> ;;
> sparc*-*-linux*)
> ;;
> x86_64-*-darwin[1]* | i?86-*-darwin[1]*)
> TSAN_SUPPORTED=3Dno
> ;;
> *)
> UNSUPPORTED=3D1
> ;;
> esac
>=20
> In configure output:
> checking for libsanitizer support=85 no
>=20
> # Adam
>=20
>=20
It would be fantastic to get this working. It's been generating a lot of
$$$ lately and saving the world.
This seems to discuss it a bit and has a patch for testing (posted just
days ago):
https://code.google.com/p/address-sanitizer/issues/detail?id=3D303&colspe=
c=3DID%20Type%20Status%20Priority%20OpSys%20Owner%20Summary
--=20
Regards,
Bryan Drewery
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