[COMMITTED] ada: Fix expanding container aggregates with Iterator specification

["Marc Poulhiès" <poulhies@adacore.com>]

From: Viljar Indus <indus@adacore.com>

The compiler should use unnamed addition methods such as Append
when expanding a container aggregate with Iterator Specification.

gcc/ada/

	* exp_aggr.adb (Expand_Container_Aggregate): Use the positional
	addition method only when dealing with a container aggregate
	without an Iterator Specification e.g. with a loop parameter
	specification

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

---
 gcc/ada/exp_aggr.adb | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gcc/ada/exp_aggr.adb b/gcc/ada/exp_aggr.adb
index 4c8dcae9d83..dffc5ab721d 100644
--- a/gcc/ada/exp_aggr.adb
+++ b/gcc/ada/exp_aggr.adb
@@ -7259,8 +7259,11 @@ package body Exp_Aggr is
                      --  Iterated component association. Discard
                      --  positional insertion procedure.
 
-                     Add_Named_Subp := Assign_Indexed_Subp;
-                     Add_Unnamed_Subp := Empty;
+                     if not Present (Iterator_Specification (Comp)) then
+                        Add_Named_Subp := Assign_Indexed_Subp;
+                        Add_Unnamed_Subp := Empty;
+                     end if;
+
                      Expand_Iterated_Component (Comp);
                   end if;
 
-- 
2.40.0