[binutils-gdb] [gdbsupport] Add parameterless iterator_range constructor

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a4f9f637306bc99d2e4714bd2b92e4f21841de9f

commit a4f9f637306bc99d2e4714bd2b92e4f21841de9f
Author: Tom de Vries <[email protected]>
Date:   Fri Apr 24 14:17:29 2026 +0200

    [gdbsupport] Add parameterless iterator_range constructor
    
    I noticed that there's no convenient way to create an empty range in
    iterator_range.  Add this.

Diff:
---
 gdb/unittests/iterator-range-selftests.c | 2 +-
 gdbsupport/iterator-range.h              | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/gdb/unittests/iterator-range-selftests.c b/gdb/unittests/iterator-range-selftests.c
index a05531d95e0..7c0f7f57484 100644
--- a/gdb/unittests/iterator-range-selftests.c
+++ b/gdb/unittests/iterator-range-selftests.c
@@ -67,7 +67,7 @@ test_iterator_range ()
 
   {
     /* Empty range.  */
-    auto r3 = int_array_iterator_range (end, end);
+    auto r3 = int_array_iterator_range ();
     test_iterator_range_1 (r3, nullptr, 0, end, end);
   }
 
diff --git a/gdbsupport/iterator-range.h b/gdbsupport/iterator-range.h
index 42185546f5a..02a422852e8 100644
--- a/gdbsupport/iterator-range.h
+++ b/gdbsupport/iterator-range.h
@@ -27,6 +27,9 @@ struct iterator_range
 {
   using iterator = IteratorType;
 
+  /* Create an empty range.  */
+  iterator_range () = default;
+
   /* Create an iterator_range using BEGIN as the begin iterator.
 
      Assume that the end iterator can be default-constructed.  */