Hi, I am not really an expert on libc internals, but a friend of mine with some more experience did some debugging yesterday and we figured out it might not be a bug but expected behavior. I'll put my points by answering some of the above statements.
> FYI, I found that it is triggered by the _IO_stdin_used symbol not > being exported from the binary, which happened because of a version-script > couple with -rdynamic. I still think there is something fishy going on > on the libc6 side, but not as bad as originally thought. This seems to be a known and more or less documented behavior of libc to determine which ABI to use for an application software, see [1]. What eventually happens is an unaligned access due to the ABI mismatch. Checking the export list of the current xulrunner binary of Iceweasel 10, this behaviour seems to have been fixed in Firefox. So I expect Firefox to work on SPARC again. > What is fishy is that only sparc is affected. So whatever it's doing > on sparc, it's doing it differently from other architectures. That's because SPARC CPUs trigger an exception on aligned access [1]. I would expect the same to happen on Alpha [3], but Alpha is no longer a supported architecture for the current Debian release. It would be nice if the original bug reporter could try to reproduce the bug with Iceweasel 10 in Debian Wheezy and unless it's still crashing, this bug should be untagged as being an RC bug for Wheezy. Cheers, Adrian > [1] http://lists.gnu.org/archive/html/bug-glibc/2001-12/msg00203.html > [2] http://gcc.gnu.org/ml/gcc/2000-10/msg00291.html > [3] http://gcc.gnu.org/ml/gcc-help/1999-10n/msg00065.html -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaub...@debian.org `. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913 -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
