[gcc r13-7911] ada: Fix missing finalization of extended return object on abnormal completion

[gcc r13-7911] ada: Fix missing finalization of extended return object on abnormal completion

[Eric Botcazou]

https://gcc.gnu.org/g:3f31cd4388c92910e66e96cc1744543d983f7f33

commit r13-7911-g3f31cd4388c92910e66e96cc1744543d983f7f33
Author: Eric Botcazou <ebotcazou@adacore.com>
Date:   Thu Sep 14 16:42:45 2023 +0200

    ada: Fix missing finalization of extended return object on abnormal completion
    
    This happens in the case of a nonlimited return type and is a fallout of the
    optimization recently implemented for them.
    
    gcc/ada/
    
            * einfo.ads (Status_Flag_Or_Transient_Decl): Remove ??? comment.
            * exp_ch6.adb (Expand_N_Extended_Return_Statement): Extend the
            handling of finalizable return objects to the non-BIP case.
            * exp_ch7.adb (Build_Finalizer.Process_Declarations): Adjust the
            comment accordingly.
            * exp_util.adb (Requires_Cleanup_Actions): Likewise.

Diff:
---
 gcc/ada/einfo.ads    | 8 ++++----
 gcc/ada/exp_ch6.adb  | 4 ++--
 gcc/ada/exp_ch7.adb  | 6 +++---
 gcc/ada/exp_util.adb | 6 +++---
 4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/gcc/ada/einfo.ads b/gcc/ada/einfo.ads
index a200d6334bf..e71fd617406 100644
--- a/gcc/ada/einfo.ads
+++ b/gcc/ada/einfo.ads
@@ -4519,11 +4519,11 @@ package Einfo is
 --    Status_Flag_Or_Transient_Decl
 --       Defined in constant, loop, and variable entities. Applies to objects
 --       that require special treatment by the finalization machinery, such as
---       extended return results, IF and CASE expression results, and objects
+--       extended return objects, conditional expression results, and objects
 --       inside N_Expression_With_Actions nodes. The attribute contains the
---       entity of a flag which specifies particular behavior over a region of
---       code or the declaration of a "hook" object.
---       In which case is it a flag, or a hook object???
+--       entity of a flag which specifies a particular behavior over a region
+--       of the extended return for the return objects, or the declaration of a
+--       hook object for conditional expressions and N_Expression_With_Actions.
 
 --    Storage_Size_Variable [implementation base type only]
 --       Defined in access types and task type entities. This flag is set
diff --git a/gcc/ada/exp_ch6.adb b/gcc/ada/exp_ch6.adb
index c6e9ae3cfb4..01d938ec6c3 100644
--- a/gcc/ada/exp_ch6.adb
+++ b/gcc/ada/exp_ch6.adb
@@ -5326,7 +5326,7 @@ package body Exp_Ch6 is
       --  with the scope finalizer. There is one flag per each return object
       --  in case of multiple returns.
 
-      if Is_BIP_Func and then Needs_Finalization (Etype (Ret_Obj_Id)) then
+      if Needs_Finalization (Etype (Ret_Obj_Id)) then
          declare
             Flag_Decl : Node_Id;
             Flag_Id   : Entity_Id;
@@ -5425,7 +5425,7 @@ package body Exp_Ch6 is
          --  Update the state of the function right before the object is
          --  returned.
 
-         if Is_BIP_Func and then Needs_Finalization (Etype (Ret_Obj_Id)) then
+         if Needs_Finalization (Etype (Ret_Obj_Id)) then
             declare
                Flag_Id : constant Entity_Id :=
                            Status_Flag_Or_Transient_Decl (Ret_Obj_Id);
diff --git a/gcc/ada/exp_ch7.adb b/gcc/ada/exp_ch7.adb
index 53261c2a1f1..757cf7318f9 100644
--- a/gcc/ada/exp_ch7.adb
+++ b/gcc/ada/exp_ch7.adb
@@ -2376,9 +2376,9 @@ package body Exp_Ch7 is
                elsif Is_Ignored_Ghost_Entity (Obj_Id) then
                   null;
 
-               --  Return object of a build-in-place function. This case is
-               --  recognized and marked by the expansion of an extended return
-               --  statement (see Expand_N_Extended_Return_Statement).
+               --  Return object of extended return statements. This case is
+               --  recognized and marked by the expansion of extended return
+               --  statements (see Expand_N_Extended_Return_Statement).
 
                elsif Needs_Finalization (Obj_Typ)
                  and then Is_Return_Object (Obj_Id)
diff --git a/gcc/ada/exp_util.adb b/gcc/ada/exp_util.adb
index 6ae671c43a6..fe48722cedd 100644
--- a/gcc/ada/exp_util.adb
+++ b/gcc/ada/exp_util.adb
@@ -12896,9 +12896,9 @@ package body Exp_Util is
             elsif Is_Ignored_Ghost_Entity (Obj_Id) then
                null;
 
-            --  Return object of a build-in-place function. This case is
-            --  recognized and marked by the expansion of an extended return
-            --  statement (see Expand_N_Extended_Return_Statement).
+            --  Return object of extended return statements. This case is
+            --  recognized and marked by the expansion of extended return
+            --  statements (see Expand_N_Extended_Return_Statement).
 
             elsif Needs_Finalization (Obj_Typ)
               and then Is_Return_Object (Obj_Id)