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Re: bug#30394: ARM compilation via qemu binfmt - Assertion failure


From: Ludovic Courtès
Subject: Re: bug#30394: ARM compilation via qemu binfmt - Assertion failure
Date: Fri, 16 Feb 2018 11:35:43 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

Hello,

Danny Milosavljevic <address@hidden> skribis:

> Unfortunately, there's a (pretty reproducible) problem with it.
>
> guix-master/guix $ ./pre-inst-env guix system disk-image --system=armhf-linux 
> -e "(@ (gnu system install) installation-os)"
> [... building grub-2.02 ...]
> phase `configure' succeeded after 821.8 seconds
> starting phase `patch-generated-file-shebangs'
> patch-makefile-SHELL: ./po/Makefile: changing `SHELL' from `/bin/sh' to 
> `/gnu/st[...]
> phase `patch-generated-file-shebangs' succeeded after 14.6 seconds
> starting phase `build'
> bison -d -p grub_script_yy -b grub_script ./grub-core/script/parser.y
> flex -o grub_script.yy.c --header-file=grub_script.yy.h 
> ./grub-core/script/yylex[...]
> bison: ../sysdeps/unix/sysv/linux/spawni.c:360: __spawnix: Assertion `ec >= 
> 0' failed

[...]

> https://sourceware.org/bugzilla/show_bug.cgi?id=22273
> diff --git a/sysdeps/unix/sysv/linux/spawni.c 
> b/sysdeps/unix/sysv/linux/spawni.c
> index dea1650..f02ac19 100644
> --- a/sysdeps/unix/sysv/linux/spawni.c
> +++ b/sysdeps/unix/sysv/linux/spawni.c
> @@ -365,9 +365,15 @@ __spawnix (pid_t * pid, const char *file,
>    if (new_pid > 0)
>      {
>        ec = args.err;
> -      assert (ec >= 0);
>        if (ec != 0)

Note that this is only a problem for code that uses the ‘posix_spawn’
interface, such as Bison in the example above.

In practice that interface is rarely used, which is probably why I never
hit that assertion before.

Ludo’.



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