728fedc29c
GNAT properly rejects an attempt to assign an access_to_subprogram formal
to a local variable, according to accessibiiity rules. This patch forces the
same behavior on the use of such a formal in an object declaration.
Compiling store_anon.adb must yield:
store_anon.adb:7:35: illegal attempt to store anonymous access to subprogram
store_anon.adb:7:35: value has deeper accessibility than any master
(RM 3.10.2 (13))
store_anon.adb:7:35: use named access type for "P" instead of access parameter
----
package Store_Anon is
procedure Store (P : not null access procedure);
procedure Invoke;
end Store_Anon;
----
package body Store_Anon is
type P_Ptr is access procedure;
Stored : P_Ptr;
procedure Store (P : not null access procedure) is
Illegal : constant P_Ptr := P;
begin -- Store
Stored := Illegal;
end Store;
procedure Invoke is
-- Empty
begin -- Invoke
Stored.all;
end Invoke;
end Store_Anon;
2018-05-23 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* sem_ch3.adb (Analyze_Object_Declaration): If expression is an
anonymous_access_to_ subprogram formal, apply a conversion to force an
accsssibility check that will fail statically, enforcing 3.10.2 (13).
From-SVN: r260576
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