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Re: /usr/bin/m4: internal error detected

On 12/01/2017 10:51 AM, John Paul Adrian Glaubitz wrote:
Hi Daniel!

On 12/01/2017 06:08 AM, Daniel Kahn Gillmor wrote:
Copying file po/Makefile.in.in
Copying file po/Makevars.template
qemu: Unsupported syscall: -1
m4: ../sysdeps/unix/sysv/linux/spawni.c:366: __spawnix: Assertion `ec >= 0' failed. /usr/bin/m4: internal error detected; please report this bug to <bug-m4@gnu.org>: Aborted

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].

While the change in glibc is most certainly correct (I don't have enough
background knowledge to comment on that), it broke qemu-user for everyone
and so far there is no possible fix in sight.

I am CC'ing this to libc-alpha in the hope that someone from glibc upstream
might give us a tip on how to resolve the issue. Not being able to use qemu-user
anymore is quite a deal breaker because lots of people use qemu-user for
debugging issues on foreign architectures which is now no longer possible.

Is this <https://sourceware.org/bugzilla/show_bug.cgi?id=22273>? If yes, it should be fixed in master and on the 2.25 and 2.26 branches. 2.24 and earlier should not be affected.


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