ada: Fix inherited postconditions in inlined subprograms

Protect the building of postcondition pragmas in case the
postcondition is not present due to inlining.

gcc/ada/

	* freeze.adb
	(Build_Inherited_Condition_Pragmas): Do nothing if A_Post is
	empty.

1 files changed, 10 insertions, 5 deletions

diff --git a/gcc/ada/freeze.adb b/gcc/ada/freeze.adb
index 888e2ec..1fdc9d0 100644
--- a/gcc/ada/freeze.adb
+++ b/gcc/ada/freeze.adb
@@ -1718,11 +1718,16 @@ package body Freeze is
                end;
             end if;
 
-            New_Prag := New_Copy_Tree (A_Post);
-            Rewrite
-              (Expression (First (Pragma_Argument_Associations (New_Prag))),
-               Class_Post);
-            Append (New_Prag, Decls);
+            --  A_Post can be null here if the postcondition was inlined in the
+            --  called subprogram.
+
+            if Present (A_Post) then
+               New_Prag := New_Copy_Tree (A_Post);
+               Rewrite
+                 (Expression (First (Pragma_Argument_Associations (New_Prag))),
+                  Class_Post);
+               Append (New_Prag, Decls);
+            end if;
          end if;
       end Build_Inherited_Condition_Pragmas;