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dimensions like in the constrained case.
* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Array_Type>: Filter out
negative size for the array dimensions like in the constrained case.
<E_Array_Subtype>: Do not create an artificially non-constant high
bound if the low bound is non-constant. Minor tweaks.
* gcc-interface/trans.c (lvalue_required_p): Add CONSTANT parameter
and turn ALIASED into a boolean parameter. Adjust calls to self.
<N_Attribute_Reference>: Return 1 for more attributes.
<N_Object_Renaming_Declaration>: Return 1 for non-constant objects.
<N_Assignment_Statement>: Return 1 for the LHS.
(Identifier_to_gnu): Adjust calls to lvalue_required_p.
(call_to_gnu): Be prepared for wrapped boolean rvalues.
From-SVN: r152201
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