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[Ada] AI12-0204 Renaming of a prefixed view

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2020-06-08  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

	* sem_ch5.adb: Fix typo.
	* sem_ch8.adb (Analyze_Renamed_Primitive_Operation): Check that
	the prefix of a prefixed view must be renamable as an object.
This commit is contained in:
Arnaud Charlet 2020-02-24 05:41:00 -05:00 committed by Pierre-Marie de Rodat
parent 072c5071e0
commit 63408d0eb2
2 changed files with 18 additions and 2 deletions
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2
gcc/ada/sem_ch5.adb
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@ -2390,7 +2390,7 @@ package body Sem_Ch5 is
-- AI12-0047 stipulates that the domain (array or container)
-- cannot be a component that depends on a discriminant if the
-- enclosing object is mutable, to prevent a modification of the
-- dowmain of iteration in the course of an iteration.
-- domain of iteration in the course of an iteration.
-- If the object is an expression it has been captured in a
-- temporary, so examine original node.

16
gcc/ada/sem_ch8.adb
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@ -1826,6 +1826,7 @@ package body Sem_Ch8 is
Is_Body : Boolean)
is
Old_S : Entity_Id;
Nam : Entity_Id;
function Conforms
(Subp : Entity_Id;
@ -1920,6 +1921,21 @@ package body Sem_Ch8 is
Error_Msg_N ("mode conformance error in renaming", N);
end if;
-- AI12-0204: The prefix of a prefixed view that is renamed or
-- passed as a formal subprogram must be renamable as an object.
Nam := Prefix (Name (N));
if Is_Object_Reference (Nam) then
if Is_Dependent_Component_Of_Mutable_Object (Nam) then
Error_Msg_N
("illegal renaming of discriminant-dependent component",
Nam);
end if;
else
Error_Msg_N ("expect object name in renaming", Nam);
end if;
-- Enforce the rule given in (RM 6.3.1 (10.1/2)): a prefixed
-- view of a subprogram is intrinsic, because the compiler has
-- to generate a wrapper for any call to it. If the name in a