[COMMITTED] ada: Ignore accessibility actuals in expression pretty-printer

[Marc Poulhiès]

From: Piotr Trojanek <trojanek@adacore.com>

Extra actual parameters for accessibility checks are confusing for the
expression pretty-printer that is used by CodePeer. It seems that nodes
created for the accessibility checks should use the Sloc of the source
expression of accessibility checks, not the target. However, this is
problematic to achieve with the current implementation of accessibility
checks, so with this patch we will simply ignore the accessibility
actuals when computing Slocs for expression pretty-printing.

gcc/ada/

	* errout.adb (First_And_Last_Nodes): Ignore accessibility parameters.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/errout.adb | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/gcc/ada/errout.adb b/gcc/ada/errout.adb
index 0a36a1d7466..5c3e76c5eca 100644
--- a/gcc/ada/errout.adb
+++ b/gcc/ada/errout.adb
@@ -1769,6 +1769,24 @@ package body Errout is
          Loc   : constant Source_Ptr := Sloc (Norig);
 
       begin
+         --  ??? For assignments that require accessiblity checks, e.g.:
+         --
+         --    Y := Func (123);
+         --
+         --  the function call gets an extra actual parameter association with
+         --  Sloc of the assigned name "Y":
+         --
+         --    Y := Func (123, A8b => 2);
+         --
+         --  We can simply ignore those extra actual parameters when
+         --  determining the Sloc range of the "Func (123)" expression.
+
+         if Nkind (N) = N_Parameter_Association
+           and then Is_Accessibility_Actual (N)
+         then
+            return Skip;
+         end if;
+
          --  Check for earlier
 
          if Loc < Eloc
-- 
2.40.0