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    SubjectRe: RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction flag
    Richard Guenther a écrit :
    > On Wed, Mar 5, 2008 at 10:20 PM, Joe Buck <Joe.Buck@synopsys.com> wrote:
    >>
    >> On Wed, 5 Mar 2008, Jan Hubicka wrote:
    >> > > Linux kernel is disabling red zone and use kernel code model, yet the
    >> > > ABI is not going to be adjusted for that.
    >> > >
    >> > > This is resonably easy to fix on kernel side in signal handling, or by
    >> > > removing std usage completely
    >>
    >> On Wed, Mar 05, 2008 at 10:02:07PM +0100, Michael Matz wrote:
    >> > That is true. But it requires updating the kernel to a fixed one if you
    >> > want to run your programs compiled by 4.3 :-/ Not something we'd like to
    >> > demand.
    >>
    >> I changed the title just for emphasis.
    >>
    >> I think that we can't ship 4.3.0 if signal handlers on x86/x86_64
    >> platforms for both Linux and BSD systems will mysteriously (to the users)
    >> fail, and it doesn't matter whose fault it is.
    >
    > We didn't yet run into this issue and build openSUSE with 4.3 since more than
    > three month.
    >

    The problem can be easily reproduced by using a glibc built with gcc
    4.3, with SBCL (the gcc version doesn't matter). The signal handler in
    SBCL calls sigemptyset() which uses memset().


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