Follow-up Comment #4, bug #41983 (project make):
Thanks Tim. Technically according to the docs it's not legal to call file
without an argument; in other words, you should be running $(file >>4touch,)
(note the comma) instead. However, to be clear this will add a newline to the
file in all cases, which I suppose could be unwanted.
Obviously dumping core is not an appropriate response to a makefile error as
well :-)
If we keep the currently documented requirement, then the right fix is to
change the minimum number of arguments this function takes to 2, in which case
your use will fail with: *** insufficient number of arguments (1) to function
'file'. Stop.
Alternatively we could accept a single argument and make that do something,
and change the documentation. For $(file >x) it's clear that would create and
truncate file "x" and "x" would be empty (rather than contain a newline). I
guess for $(file >>x) it would create the file "x" if it didn't exist, and do
nothing if it did exist. Does that seem useful?
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