[COMMITTED] ada: Spurious reference warning on qualified expression

[Marc Poulhiès]

From: Justin Squirek <squi...@adacore.com>

Incremental improvement/clean up.

gcc/ada/

        * sem_warn.adb (Within_Postcondition): Add/modify comments to
        document various cases.

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

---
 gcc/ada/sem_warn.adb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/ada/sem_warn.adb b/gcc/ada/sem_warn.adb
index 8317b449021..54d8920a943 100644
--- a/gcc/ada/sem_warn.adb
+++ b/gcc/ada/sem_warn.adb
@@ -1973,6 +1973,8 @@ package body Sem_Warn is
                      begin
                         Nod := Parent (N);
                         while Present (Nod) loop
+                           --  General contract / predicate related pragma
+
                            if Nkind (Nod) = N_Pragma
                              and then
                                Pragma_Name_Unmapped (Nod)
@@ -1992,6 +1994,8 @@ package body Sem_Warn is
                            then
                               return True;
 
+                           --  Deal with special 'Ensures' Test_Case component
+
                            elsif Present (Parent (Nod)) then
                               P := Parent (Nod);
 
-- 
2.43.2