[gcc r15-6447] libstdc++: add missing return in generator assignment operator [PR118196]

[Arsen Arsenovic via Gcc-cvs]

https://gcc.gnu.org/g:9a1cb52cae2d48d2fc18d01b534bf4e3203f0cc1

commit r15-6447-g9a1cb52cae2d48d2fc18d01b534bf4e3203f0cc1
Author: Arsen Arsenović <ar...@aarsen.me>
Date:   Tue Dec 24 12:50:28 2024 +0100

    libstdc++: add missing return in generator assignment operator [PR118196]
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/118196
            * include/std/generator (generator::operator=(generator)): Add
            missing 'return *this;'.
            * testsuite/24_iterators/range_generators/pr118196.cc: New test.

Diff:
---
 libstdc++-v3/include/std/generator                          |  1 +
 .../testsuite/24_iterators/range_generators/pr118196.cc     | 13 +++++++++++++
 2 files changed, 14 insertions(+)

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/pr118196.cc 
b/libstdc++-v3/testsuite/24_iterators/range_generators/pr118196.cc
new file mode 100644
index 000000000000..ae161df2a4a6
--- /dev/null
+++ b/libstdc++-v3/testsuite/24_iterators/range_generators/pr118196.cc
@@ -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);
+}