Date: Fri, 17 Jan 2014 16:26:30 -0500 From: Pedro Giffuni <pfg@FreeBSD.org> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: FreeBSD Current <current@freebsd.org> Subject: Re: svn 260311 breaks gcc builds on releng9 ? Message-ID: <52D9A006.70106@FreeBSD.org> In-Reply-To: <CA%2BhQ2%2BhpTkncbURJOkxQ9gv63bqORtRL%2BwEuorH3CDBnuvKEhg@mail.gmail.com> References: <20140117201802.GB62555@onelab2.iet.unipi.it> <52D99783.9020909@FreeBSD.org> <CA%2BhQ2%2BhpTkncbURJOkxQ9gv63bqORtRL%2BwEuorH3CDBnuvKEhg@mail.gmail.com>
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On 17.01.2014 16:07, Luigi Rizzo wrote: > > > > On Fri, Jan 17, 2014 at 12:50 PM, Pedro Giffuni <pfg@freebsd.org > <mailto:pfg@freebsd.org>> wrote: > > Hello Luigi; > > > On 17.01.2014 15:18, Luigi Rizzo wrote: > > Hi, > I am seeing an odd problem which seems to be triggered by > svn260311 > > I have two machines running snapshots of stable/9 from last fall > (one 255898 sep.26, the other 258126 nov.14). All is amd64 > > Build a recent head (260311 and newer) with gcc fails on the > sep.26 machine: > > ... > 19:51:22 ===> gnu/usr.bin/cc/cc1plus (all) > PROG CC > /media/bsd10/usr/home/luigi/FreeBSD/head/gnu/usr.bin/cc/cc1plus/../../../../contrib/gcc/main.c > ... > PROG CC > /media/bsd10/usr/home/luigi/FreeBSD/head/gnu/usr.bin/cc/cc1plus/../../../../contrib/gcc/cp/except.c > parser.o: In function > `cp_parser_objc_tentative_protocol_refs_opt': > parser.c:(.text+0x14665): undefined reference to > `cp_objc_protocol_id_list' > *** [cc1plus-dummy] Error code 1 > 1 error > > but works on the newer one. > > svn 260310 builds on both. > > I am a bit unclear on what is going on because the missing symbol > (cp_objc_protocol_id_list) only appears in the source file > parser.c > and in a ChangeLog.apple file, so maybe it is generated and > the actual failure is at some earlier stage. > > Thanks for the report. > > Of course gcc can also have bugs but it would look like you may > not be doing a clean build or that some how object code from two > different builds got mixed up. > > > i thought so too, but i am building in a completely new dir > and i retried some 10 times rm -rf on the output dir, > resyncing the repo and checking diffs, etc. > > Also it is very suspicious that going back to 260310 makes > the problem disappear, and 260311 brings it back in. > > Anyways, it is very confusing indeed. > > > > JIC, the cp_obj_protocol_id_list stuff is obviously objc stuff > that we don't need at all and that crept in along with other > changes from Apple so I will remove it to see if it helps somehow. > > > ok thanks. > let me know if you want me to test a patch before committing, > since I have a way to reproduce the error (i am not upgrading > the offending system on purpose). > The Apple change was incomplete so I guess the compiler in head is not being strict enough. I removed the dead code and rebuilt. Should be fixed as r260831. Thank you for the report! Pedro.
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