make check: Tests for platform coreboot using temporary files fail

[Paul Menzel]

Dear GRUB developers,


using Debian Sid/unstable, building GRUB from commit f11db3c (core:
avoid NULL derefrence in grub_divmod64s) and running `make check`, all
the tests using temporary files fail.

        $ ./autogen.sh
        $ ./configure --with-platform=coreboot --enable-boot-time 
--enable-cache-stats --enable-dependency-tracking
        $ make -j
        $ LANG=C make check
        […]
        
============================================================================
        Testsuite summary for GRUB 2.02~beta2
        
============================================================================
        # TOTAL: 81
        # PASS:  20
        # SKIP:  17
        # XFAIL: 0
        # FAIL:  44
        # XPASS: 0
        # ERROR: 0
        
============================================================================
        See ./test-suite.log
        Please report to address@hidden
        
============================================================================
        […]
        $ more test-suite.log
        […]
        FAIL: grub_cmd_echo
        ===================

        cp: cannot stat '': No such file or directory
        […]

The temporary files are present in the temporary directory, `/tmp` in my
case. Is that expected?

`test-suite.log` is attached.


Thanks,

Paul

test-suite.log
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