rm5248 commented on issue #563:
URL: 
https://github.com/apache/logging-log4cxx/issues/563#issuecomment-3568342703

   g++ 12.5.0 also has the issue.  I did a quick search for issues, but I 
didn't see anything obvious.  Since the ubuntu builds use 13.3, I'm going to 
guess that this is just a GCC 12 problem and it was fixed in 13.
   
   I think we probably want to do something like:
   ```
   #if defined(__GNUC__) && __GNUC__ <= 12
   #define LOG4CXX_CONCEPT_BROKEN 1
   #else
   #define LOG4CXX_CONCEPT_BROKEN 0
   #endif
   
   ...
   
   #if defined(__cpp_concepts) && 202002 <= __cpp_concepts && 
!LOG4CXX_CONCEPT_BROKEN
   ```


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