/bin/bash: line 0: [: -lt: unary operator expected

[kbuild test robot]

Hi Qais,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a7c9b603cf2371edacb054abc35597e810c1e5fd
commit: 2a037f310bab89b7db5b86c7954cf69c229c87ca MIPS: VDSO: Fix build error
date:   3 months ago
config: mips-jz4740 (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 2a037f310bab89b7db5b86c7954cf69c229c87ca
        # save the attached .config to linux build tree
        make.cross ARCH=mips 

All errors (new ones prefixed by >>):

>> /bin/bash: line 0: [: -lt: unary operator expected

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