Synchronous barriers are currently not supported by GNATprove (i.e. it
doesn't recognize that they are initialized by synchronous). They are
specifically detected and rejected as not-in-SPARK, but it is more
elegant to annotate the Ada.Synchronous runtime library unit with
SPARK_Mode => Off.
Compilation is not affected by this annotation.
Tested on x86_64-pc-linux-gnu, committed on trunk
2020-06-09 Piotr Trojanek <troja...@adacore.com>
gcc/ada/
* libgnarl/a-synbar.ads, libgnarl/a-synbar.adb,
libgnarl/a-synbar__posix.ads, libgnarl/a-synbar__posix.adb
(Ada.Synchronous_Barriers): Annotate with SPARK_Mode => Off.--- gcc/ada/libgnarl/a-synbar.adb
+++ gcc/ada/libgnarl/a-synbar.adb
@@ -33,7 +33,7 @@
-- --
------------------------------------------------------------------------------
-package body Ada.Synchronous_Barriers is
+package body Ada.Synchronous_Barriers with SPARK_Mode => Off is
protected body Synchronous_Barrier is
--- gcc/ada/libgnarl/a-synbar.ads
+++ gcc/ada/libgnarl/a-synbar.ads
@@ -33,7 +33,7 @@
-- --
------------------------------------------------------------------------------
-package Ada.Synchronous_Barriers is
+package Ada.Synchronous_Barriers with SPARK_Mode => Off is
pragma Preelaborate (Synchronous_Barriers);
subtype Barrier_Limit is Positive range 1 .. Positive'Last;
--- gcc/ada/libgnarl/a-synbar__posix.adb
+++ gcc/ada/libgnarl/a-synbar__posix.adb
@@ -37,7 +37,7 @@
with Interfaces.C; use Interfaces.C;
-package body Ada.Synchronous_Barriers is
+package body Ada.Synchronous_Barriers with SPARK_Mode => Off is
--------------------
-- POSIX barriers --
--- gcc/ada/libgnarl/a-synbar__posix.ads
+++ gcc/ada/libgnarl/a-synbar__posix.ads
@@ -39,7 +39,7 @@ with System;
private with Ada.Finalization;
private with Interfaces.C;
-package Ada.Synchronous_Barriers is
+package Ada.Synchronous_Barriers with SPARK_Mode => Off is
pragma Preelaborate (Synchronous_Barriers);
subtype Barrier_Limit is Positive range 1 .. Positive'Last;
