Date: Fri, 28 Feb 2014 17:00:01 GMT From: Dimitry Andric <dim@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/187103: clang 3.4 miscompiles nsAppRunner.cpp from firefox firefox-27.0.1, 1 in i386 Message-ID: <201402281700.s1SH01H1011225@freefall.freebsd.org>
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The following reply was made to PR bin/187103; it has been noted by GNATS. From: Dimitry Andric <dim@FreeBSD.org> To: bug-followup@FreeBSD.org, truckman@FreeBSD.org Cc: Subject: Re: bin/187103: clang 3.4 miscompiles nsAppRunner.cpp from firefox firefox-27.0.1,1 in i386 Date: Fri, 28 Feb 2014 17:58:08 +0100 --Apple-Mail=_55082F3A-EBAC-4B51-B255-4D80565AFD60 Content-Type: multipart/mixed; boundary="Apple-Mail=_B9859571-DEEA-44DA-A2D5-60B54111B1DB" --Apple-Mail=_B9859571-DEEA-44DA-A2D5-60B54111B1DB Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii 123456789012345678901234567890123456789012345678901234567890123456789012 It is indeed a clang bug, which only occurs on i386, due to the ((regparm (3), stdcall)) attributes used for certain xpcom functions on that architecture. It has been reported upstream as http://llvm.org/PR19007 . For now, please drop the attached patch in /usr/ports/www/firefox/files, which disables use of those attributes. -Dimitry --Apple-Mail=_B9859571-DEEA-44DA-A2D5-60B54111B1DB Content-Disposition: attachment; filename=patch-xpcom_base_nscore.h Content-Type: application/octet-stream; name="patch-xpcom_base_nscore.h" Content-Transfer-Encoding: 7bit --- xpcom/base/nscore.h.orig 2014-02-12 22:29:26.000000000 +0100 +++ xpcom/base/nscore.h 2014-02-28 17:22:25.000000000 +0100 @@ -111,7 +111,7 @@ * NS_HIDDEN_(int) NS_FASTCALL func2(char *foo); */ -#if defined(__i386__) && defined(__GNUC__) && !defined(XP_OS2) +#if defined(__i386__) && defined(__GNUC__) && !defined(XP_OS2) && !defined(__clang__) #define NS_FASTCALL __attribute__ ((regparm (3), stdcall)) #define NS_CONSTRUCTOR_FASTCALL __attribute__ ((regparm (3), stdcall)) #elif defined(XP_WIN) && !defined(_WIN64) --Apple-Mail=_B9859571-DEEA-44DA-A2D5-60B54111B1DB Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii --Apple-Mail=_B9859571-DEEA-44DA-A2D5-60B54111B1DB-- --Apple-Mail=_55082F3A-EBAC-4B51-B255-4D80565AFD60 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.22 (Darwin) iEYEARECAAYFAlMQwCoACgkQsF6jCi4glqP7+ACfWlQw6sLO+yHvZ0lEDw584w8e ypgAn2wLFdajC0s6QO+6+q7z3rZh5wJm =dAll -----END PGP SIGNATURE----- --Apple-Mail=_55082F3A-EBAC-4B51-B255-4D80565AFD60--
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