ARM compilation via qemu binfmt - Assertion failure
20180208174238.2abc85dc@scratchpost.org
Hi ng0,
On Tue, 06 Feb 2018 10:33:56 +0000
ng0@n0.is wrote:
Toggle quote (2 lines)
> recently I've read about slow but native compiling of ARM on qemu.
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
This is only fixed in glibc 2.27 (not in core-updates).
The fix is:
Toggle diff (22 lines)
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)
- __waitpid (new_pid, NULL, 0);
+ {
+ /* It handles the unlikely case where the auxiliary vfork process
+ is killed before calling _exit or execve. */
+ int status;
+ __waitpid (new_pid, &status, 0);
+ if (WIFSIGNALED (status))
+ ec = 0;
+ }
}
else
ec = -new_pid;