[committed] libstdc++: Add missing return for atomic timed wait [PR102074]

[Jonathan Wakely via Gcc-patches]

This adds a missing return statement to the non-futex wait-until
operation.

Signed-off-by: Jonathan Wakely <jwak...@redhat.com>

libstdc++-v3/ChangeLog:

        PR libstdc++/102074
        * include/bits/atomic_timed_wait.h (__timed_waiter_pool)
        [!_GLIBCXX_HAVE_PLATFORM_TIMED_WAIT]: Add missing return.

Tested powerpc64le-linux and power-aix and sparc-solaris.

Committed to trunk.

We think there's another issue with return values for the futex case,
which we'll fix separately.


commit 763eb1f19239ebb19c0f87590a4f02300c02c52b
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Tue Aug 31 16:50:17 2021

    libstdc++: Add missing return for atomic timed wait [PR102074]
    
    This adds a missing return statement to the non-futex wait-until
    operation.
    
    Signed-off-by: Jonathan Wakely <jwak...@redhat.com>
    
    libstdc++-v3/ChangeLog:
    
            PR libstdc++/102074
            * include/bits/atomic_timed_wait.h (__timed_waiter_pool)
            [!_GLIBCXX_HAVE_PLATFORM_TIMED_WAIT]: Add missing return.

diff --git a/libstdc++-v3/include/bits/atomic_timed_wait.h 
b/libstdc++-v3/include/bits/atomic_timed_wait.h
index ec7ff51cdbc..3db08f82707 100644
--- a/libstdc++-v3/include/bits/atomic_timed_wait.h
+++ b/libstdc++-v3/include/bits/atomic_timed_wait.h
@@ -213,6 +213,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
              lock_guard<mutex> __l(_M_mtx);
              return __cond_wait_until(_M_cv, _M_mtx, __atime);
            }
+         else
+           return true;
 #endif // _GLIBCXX_HAVE_PLATFORM_TIMED_WAIT
        }
     };