* [Ada] Add contracts to System.Address_To_Access_Conversions
@ 2022-06-02 9:08 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2022-06-02 9:08 UTC (permalink / raw)
To: gcc-patches; +Cc: Joffrey Huguet
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This patch adds SPARK annotations to subprograms from
System.Address_To_Access_Conversions. To_Pointer is considered to have
no global items, if the returned value has no aliases. To_Address is
forbidden in SPARK because addresses are not handled.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* libgnat/s-atacco.ads (To_Pointer): Add Global => null.
(To_Address): Add SPARK_Mode => Off.
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diff --git a/gcc/ada/libgnat/s-atacco.ads b/gcc/ada/libgnat/s-atacco.ads
--- a/gcc/ada/libgnat/s-atacco.ads
+++ b/gcc/ada/libgnat/s-atacco.ads
@@ -54,8 +54,10 @@ package System.Address_To_Access_Conversions is
-- optimizations that may cause unexpected results based on the assumption
-- of no strict aliasing.
- function To_Pointer (Value : Address) return Object_Pointer;
- function To_Address (Value : Object_Pointer) return Address;
+ function To_Pointer (Value : Address) return Object_Pointer with
+ Global => null;
+ function To_Address (Value : Object_Pointer) return Address with
+ SPARK_Mode => Off;
pragma Import (Intrinsic, To_Pointer);
pragma Import (Intrinsic, To_Address);
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