"/bin/sh: line 0: test: too many arguments" when builing Qt on OpenSUSE 13.1

$ test $(gdb --version | sed -e 's,[^0-9][^0-9]*\([0-9]\)\.\([0-9]\).*,\1\2,;q') -gt 72
bash: test: too many arguments
$ gdb --version
GNU gdb (GDB; openSUSE 13.1) 7.6.50.20130731-cvs
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