gc.hpp: Explicitly load tail->_next

a3215cb8 · Xavier Thompson · 21d272c0 · a3215cb8
Commit a3215cb8 authored May 19, 2022 by Xavier Thompson
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Showing with 7 additions and 2 deletions

rt/include/typon/fundamental/gc.hpp rt/include/typon/fundamental/gc.hpp +7 -2

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--- a/rt/include/typon/fundamental/gc.hpp
+++ b/rt/include/typon/fundamental/gc.hpp
@@ -111,11 +111,16 @@ namespace typon::fdt::lock_free
    {
      while (auto tail = _tail.load())
      {
-        if (tail->_stamp >= oldest || !tail->_next)
+        if (tail->_stamp >= oldest)
        {
          break;
        }
-        if (_tail.compare_exchange_strong(tail, tail->_next))
+        auto next = tail->_next.load();
+        if (!next)
+        {
+          break;
+        }
+        if (_tail.compare_exchange_strong(tail, next))
        {
          delete tail;
        }