[PATCH 2/2] libstdc++: add missing return in generator assignment operator [PR118196]

[Arsen Arsenović]

libstdc++-v3/ChangeLog:

        PR libstdc++/118196
        * include/std/generator (generator::operator=(generator)): Add
        missing 'return *this;'.
        * testsuite/24_iterators/range_generators/move-assign-missing-return.C:
        New test.
---
 libstdc++-v3/include/std/generator                  |  1 +
 .../range_generators/move-assign-missing-return.C   | 13 +++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 
libstdc++-v3/testsuite/24_iterators/range_generators/move-assign-missing-return.C

diff --git a/libstdc++-v3/include/std/generator 
b/libstdc++-v3/include/std/generator
index 3a19d535ef86..7d7e9b708657 100644
--- a/libstdc++-v3/include/std/generator
+++ b/libstdc++-v3/include/std/generator
@@ -717,6 +717,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       {
        swap(__other._M_coro, this->_M_coro);
        swap(__other._M_began, this->_M_began);
+       return *this;
       }
 
       _Iterator
diff --git 
a/libstdc++-v3/testsuite/24_iterators/range_generators/move-assign-missing-return.C
 
b/libstdc++-v3/testsuite/24_iterators/range_generators/move-assign-missing-return.C
new file mode 100644
index 000000000000..ae161df2a4a6
--- /dev/null
+++ 
b/libstdc++-v3/testsuite/24_iterators/range_generators/move-assign-missing-return.C
@@ -0,0 +1,13 @@
+// { dg-do compile { target c++23 } }
+#include "<generator>"
+
+std::generator<int>
+generator();
+
+void
+try_reassigning()
+{
+  auto gen = generator();
+  auto gen2 = generator();
+  gen = std::move(gen2);
+}
-- 
2.47.1