Re: /usr/bin/m4: internal error detected
John Paul Adrian Glaubitz <[email protected]>
| Newsgroups | gmane.comp.lib.glibc.alpha,gmane.comp.gnu.m4.bugs,gmane.linux.debian.ports.superh,gmane.comp.emulators.qemu |
|---|---|
| Message-ID | <[email protected]> |
On 12/01/2017 01:18 PM, Andreas Schwab wrote: >> This isn't a bug in m4 or anything architecture-specific, it's a regression >> that was introduced by an upstream change in glibc [1] and mainly affects >> qemu-user which we are using for m68k and sh4 [2]. > > It's a bug in qemu-linux-user, which ignores CLONE_VFORK, turning vfork > into fork. This breaks the expected semantics of vfork (VM sharing and > blocking the child until exec). Yes, I wasn't really arguing that it's a bug in QEMU as Adhemerval had already explained. The problem was just that apparently resolving the issue in QEMU isn't trivial as Peter Maydell mentioned in [1]. That's why I was looking for a workaround. However, I have re-tested Florian's patch and it works for me now, it didn't when I tested it for the first time. So, we have a workaround for the time being until the bug is resolved in QEMU. Adrian > [1] https://bugs.launchpad.net/qemu/+bug/1673976 -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - [email protected] `. `' Freie Universitaet Berlin - [email protected] `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913