[Ada] Iterators are view-specific
Pierre-Marie de Rodat
derodat@adacore.com
Tue Jul 23 08:13:00 GMT 2019
Operational aspects, such as Default_Iterator, are view-specific, and if
such an aspect appears on the full view of a private type, an object of
the type cannot be iterated upon if it is not in the scope of the full
view, This patch diagnoses properly an attempt to iterate over such an
object.
Tested on x86_64-pc-linux-gnu, committed on trunk
2019-07-23 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* aspects.ads: New table Operational_Aspect, used to distinguish
between aspects that are view-specific, such as those related to
iterators, and representation aspects that apply to all views of
a type.
* aspects.adb (Find_Aspect): If the aspect being sought is
operational, do not ecamine the full view of a private type to
retrieve it.
* sem_ch5.adb (Analyze_Iterator_Specification): Improve error
message when the intended domain of iteration does not implement
the required iterator aspects.
gcc/testsuite/
* gnat.dg/iter5.adb: Add an expected error.
* gnat.dg/iter6.adb: New testcase.
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