commit 1ccee0fbfa8e528b3671dfbf4dad5b6f67755e4c
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Mon Nov 23 18:16:44 2020

    libstdc++: Fix variable declared with wrong type
    
    libstdc++-v3/ChangeLog:
    
            * include/bits/semaphore_base.h
            (__platform_semaphore::_M_try_acquire_until): Fix type of
            variable.

diff --git a/libstdc++-v3/include/bits/semaphore_base.h b/libstdc++-v3/include/bits/semaphore_base.h
index 0692f95f24f2..56333bbbfef7 100644
--- a/libstdc++-v3/include/bits/semaphore_base.h
+++ b/libstdc++-v3/include/bits/semaphore_base.h
@@ -141,7 +141,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	else
 	  {
 	    const typename _Clock::time_point __c_entry = _Clock::now();
-	    const __clock_t __s_entry = __clock_t::now();
+	    const auto __s_entry = __clock_t::now();
 	    const auto __delta = __atime - __c_entry;
 	    const auto __s_atime = __s_entry + __delta;
 	    if (_M_try_acquire_until_impl(__s_atime))