[gcc r12-5667] [Ada] Fix small discrepancy between -gnatG and -gnatD[G] outputs

[Pierre-Marie de Rodat <pmderodat@gcc.gnu.org>]

https://gcc.gnu.org/g:38df84ae8aaa0c9e753218f5b1d087e95b13c546

commit r12-5667-g38df84ae8aaa0c9e753218f5b1d087e95b13c546
Author: Eric Botcazou <ebotcazou@adacore.com>
Date:   Thu Nov 11 12:36:10 2021 +0100

    [Ada] Fix small discrepancy between -gnatG and -gnatD[G] outputs
    
    gcc/ada/
    
            * sprint.ads (Source_Dump): Fix typo in comment.
            * sprint.adb (Source_Dump): Set Dump_Freeze_Null for both -gnatG
            and -gnatD.
            * switch-c.adb (Scan_Front_End_Switches) <'D'>: Remove obsolete
            kludge.

Diff:
---
 gcc/ada/sprint.adb   | 2 +-
 gcc/ada/sprint.ads   | 2 +-
 gcc/ada/switch-c.adb | 1 -
 3 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/gcc/ada/sprint.adb b/gcc/ada/sprint.adb
index 611563a1f22..c13be5d1b35 100644
--- a/gcc/ada/sprint.adb
+++ b/gcc/ada/sprint.adb
@@ -588,7 +588,7 @@ package body Sprint is
                              Print_Generated_Code or
                              Debug_Generated_Code;
       Dump_Original_Only  := Debug_Flag_O;
-      Dump_Freeze_Null    := Debug_Flag_S or Debug_Flag_G;
+      Dump_Freeze_Null    := Debug_Flag_S or Dump_Generated_Only;
 
       --  Note that we turn off the tree dump flags immediately, before
       --  starting the dump. This avoids generating two copies of the dump
diff --git a/gcc/ada/sprint.ads b/gcc/ada/sprint.ads
index f05356e6237..e3fd58266c6 100644
--- a/gcc/ada/sprint.ads
+++ b/gcc/ada/sprint.ads
@@ -97,7 +97,7 @@ package Sprint is
    --    -dg  print source from tree, including only the generated code
    --    -do  print source from tree, including only the original code
    --    -df  modify the above to include all units, not just the main unit
-   --    -sz  print source from tree for package Standard
+   --    -dz  print source from tree for package Standard
 
    procedure Sprint_Comma_List (List : List_Id);
    --  Prints the nodes in a list, with separating commas. If the list is empty
diff --git a/gcc/ada/switch-c.adb b/gcc/ada/switch-c.adb
index 020be635401..40727384a78 100644
--- a/gcc/ada/switch-c.adb
+++ b/gcc/ada/switch-c.adb
@@ -451,7 +451,6 @@ package body Switch.C is
 
                Debug_Generated_Code := True;
                Xref_Active := False;
-               Set_Debug_Flag ('g');
 
             --  -gnate? (extended switches)