/usr/bin/m4: internal error detected

Daniel Kahn Gillmor <[email protected]>
Newsgroups gmane.comp.gnu.m4.bugs
Message-ID <[email protected]>
Hi m4 and sh4 folks--

Debian's GnuPG package (version 2.2.3-1) is failing to build on the sh4
architecture, as seen here:

https://buildd.debian.org/status/fetch.php?pkg=gnupg2&arch=sh4&ver=2.2.3-1&stamp=1512098830&raw=0

the error log looks like:

------------
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 <[email protected]>: Aborted
-----------

So, i'm reporting it here.

Not sure what to make of it, or how to try to resolve it.

    --dkg
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