Blame doxygen-1.9.4-gcc12.1.patch

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commit 5198966c8d5fec89116d025c74934ac03ea511fa
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Author: Dimitri van Heesch <doxygen@gmail.com>
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Date:   Fri May 6 09:55:16 2022 +0200
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    issue #9312: Build: cache.h:53:14: error: 'exchange' is not a member of 'std'
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diff --git a/src/cache.h b/src/cache.h
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index 0ff3092e..e218eb27 100644
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--- a/src/cache.h
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+++ b/src/cache.h
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@@ -19,6 +19,7 @@
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 #include <list>
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 #include <unordered_map>
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 #include <mutex>
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+#include <utility>
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 #include <ctype.h>
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 /*! Fixed size cache for value type V using keys of type K.