Experimental Physics and
Industrial Control System

+The `ca_array_put()` and `ca_array_put_callback()` routines now accept an
+element count of zero, and will write a zero-length array to the PV if
+possible. No error will be raised if the target is a scalar field though,
+and the field's value will not be changed.

I thought I set the target scalar record to INVALID/LINK. 
-- 
https://code.launchpad.net/~dirk.zimoch/epics-base/+git/epics-base/+merge/386175
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[Merge] ~dirk.zimoch/epics-base:fix_zero_size_arrays into epics-base:7.0 Dirk Zimoch via Core-talk

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