Test failures with QEMU 2.11.1 (latest QEMU)

[Leo Famulari]

Hello!

While testing an upgrade to QEMU 2.11.1 in GNU Guix, I noticed that
GRUB's test suite had begun to fail where it had previously succeeded.

I've attached the full build log as log.xz and the failing test logs as
well.

There are a few different things in the failing test logs, but most of
them contain a line like:

"./example_grub_script_test: GRUB and BASH outputs did not match (see diff -u 
/tmp/guix-build-grub-2.02.drv-0/tmp.LeisBAVdLR 
/tmp/guix-build-grub-2.02.drv-0/tmp.WYr35DYm0O)"

... and the diffs suggest that QEMU's boot sequence looks different now:

------
SeaBIOS (version rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org)
-
-
-iPXE (http://ipxe.org) 00:03.0 C980 PCI2.10 PnP PMM+07F915A0+07EF15A0 C980
-Press Ctrl-B to configure iPXE (PCI 00:03.0)...                                
                                               
-
-
-Booting from DVD/CD...
-Welcome to GRUB!
-
 hello world
------

Here is the list of failing tests:

FAIL: pata_test
FAIL: example_grub_script_test
FAIL: grub_script_eval
FAIL: grub_script_test
FAIL: grub_script_echo1
FAIL: grub_script_leading_whitespace
FAIL: grub_script_echo_keywords
FAIL: grub_script_vars1
FAIL: grub_script_for1
FAIL: grub_script_while1
FAIL: grub_script_if
FAIL: grub_script_comments
FAIL: grub_script_functions
FAIL: grub_script_continue
FAIL: grub_script_shift
FAIL: grub_script_blockarg
FAIL: grub_script_break
FAIL: grub_script_return
FAIL: grub_cmd_regexp
FAIL: grub_script_setparams
FAIL: grub_cmd_date
FAIL: grub_script_not
FAIL: hddboot_test
FAIL: cdboot_test
FAIL: fddboot_test
FAIL: grub_cmd_echo
FAIL: help_test
FAIL: grub_script_gettext
FAIL: grub_script_escape_comma
FAIL: grub_script_strcmp
FAIL: netboot_test
FAIL: test_sha512sum
FAIL: grub_cmd_sleep
FAIL: test_unset
FAIL: file_filter_test
FAIL: grub_cmd_tr

log.xz
Description: Binary data

GRUB test logs.tar.xz
Description: Binary data

signature.asc
Description: PGP signature