Date: Mon, 6 Oct 2008 21:06:01 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Jos Backus <jos@catnook.com> Cc: freebsd-current@freebsd.org Subject: Re: firefox3-bin crashes near arc4random_buf() Message-ID: <20081006100601.GD18237@server.vk2pj.dyndns.org> In-Reply-To: <20081006051424.GA5858@lizzy.catnook.local> References: <20081004080511.GA72641@lizzy.catnook.local> <20081004161024.GA67323@nagual.pp.ru> <20081004222249.GA48928@lizzy.catnook.local> <48E80F02.4070309@freebsd.org> <20081005233256.GB8507@lizzy.catnook.local> <48E95D0E.50202@freebsd.org> <20081006051424.GA5858@lizzy.catnook.local>
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[-- Attachment #1 --] On 2008-Oct-05 22:14:24 -0700, Jos Backus <jos@catnook.com> wrote: >Yeah. Oddly enough the debug version seems to make a difference; firefox3 >hasn't crashed yet. Normally even without touching it firefox3 will segfault >within an hour or so. I will leave it up all night to see what happens. Either you've found a heisenbug or there was something screwy with the previous libc.so - if it doesn't die, you might like to do a 'strip -g' on your new /lib/libc.so.7 and see how that behaves, possibly followed by another # cp /lib/libc.so.7 /lib/libc.so.7-debug # cd /usr/src/lib/libc && make clean && make && make install Assuming that the only difference in flags is '-g', and the stripped debugging version of libc works whilst the non-debugging version doesn't, it looks like a bug in gcc. I haven't looked inside gcc 4.x but in earlier versions, '-g' does far more than "if (option_g) emit_debugging_section()" and can potentially change the generated code. -- Peter Jeremy Please excuse any delays as the result of my ISP's inability to implement an MTA that is either RFC2821-compliant or matches their claimed behaviour. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.9 (FreeBSD) iEYEARECAAYFAkjp4wkACgkQ/opHv/APuId2eACfffJJUvhpAO9lnclLisXfTDlV N/cAnAg5wksQNYtgB6TpnsVVplS6Pjsr =K1wF -----END PGP SIGNATURE-----
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