At least it does for me on v5.1
It is a result of a bug in sh on OSF1.
"$var"? doesn't do file-globbing if $var contains a / (it does if it
doesn't). This causes a touch command in teh merge test to fail.
WORKAROUND:
Set BIN_SH=xpg4 in your environment while running the test. This
causes the POSIX version of sh to be used (see man sh on OSF1).