exp_ch4.adb (Expand_N_Indexed_Component): For an indexed component with an implicit dereference as its prefix...
* exp_ch4.adb (Expand_N_Indexed_Component): For an indexed component
with an implicit dereference as its prefix, use
Insert_Explicit_Dereference instead of merely rewriting the prefix into
an explicit dereference. This ensures that a reference to the original
prefix is generated, if appropriate.
* sem_util.adb (Insert_Explicit_Dereference): When an implicit
dereference is rewritten to an explicit one, generate a reference to
the entity denoted by its prefix using the original prefix node, so
the dereference can be properly recorded as a read of the denoted
access value, if appropriate.
* sem_warn.adb (Output_Unreferenced_Messages): Do not abstain from
emitting 'assigned but never read' warning on a variable on the basis
that it has an access type.
(Check_References): Emit unreferenced warning when the scope is a
subprogram body.
From-SVN: r91881
