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https://issues.apache.org/jira/browse/LOGCXX-419?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13865026#comment-13865026
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Rhys Ulerich commented on LOGCXX-419:
-------------------------------------
This has bitten me in the past on GCC 4.6
(https://red.ices.utexas.edu/issues/2971) where I have worked around it as
demonstrated in
https://github.com/RhysU/suzerain/blob/master/suzerain/support/logging.cpp
using hackery like
// GCC 4.6.3 dislikes some Log4cxx constructs. Mute -fpermissive to workaround.
// Warning-only idea taken from http://stackoverflow.com/questions/10932479
// The right thing to do is to fix log4cxx, but it seems to be a failed state.
//
// If relevant, push "GCC diagnostic warning -fpermissive"
#if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
#pragma GCC diagnostic push
#pragma GCC diagnostic warning "-fpermissive"
#endif
#include <log4cxx/basicconfigurator.h>
#include <log4cxx/file.h>
#include <log4cxx/helpers/bytearrayinputstream.h>
#include <log4cxx/helpers/bytebuffer.h>
#include <log4cxx/helpers/exception.h>
#include <log4cxx/helpers/fileinputstream.h>
#include <log4cxx/helpers/loglog.h>
#include <log4cxx/helpers/pool.h>
#include <log4cxx/helpers/properties.h>
#include <log4cxx/logmanager.h>
#include <log4cxx/appender.h>
#include <log4cxx/spi/filter.h>
#include <log4cxx/spi/loggerrepository.h>
#include <log4cxx/propertyconfigurator.h>
#if !defined(LOG4CXX)
#define LOG4CXX 1
#endif
#include <log4cxx/helpers/aprinitializer.h>
// Matching pop for "GCC diagnostic warning -fpermissive"
#if ((__GNUC__ * 100) + __GNUC_MINOR__) >= 402
#pragma GCC diagnostic pop
#endif
> 'typedef spi::KeySet KeySet' changes meaning of typedef
> -------------------------------------------------------
>
> Key: LOGCXX-419
> URL: https://issues.apache.org/jira/browse/LOGCXX-419
> Project: Log4cxx
> Issue Type: Bug
> Components: Filter
> Affects Versions: 0.10.0, 0.10.1
> Environment: Ubuntu Saucy, GCC 4.8.1, Autotools
> Reporter: Rhys Ulerich
> Assignee: Rhys Ulerich
>
> Observed in the build...
> In file included from
> ../../../../log4cxx/src/main/include/log4cxx/spi/filter.h:24:0,
> from
> ../../../../log4cxx/src/main/include/log4cxx/filter/andfilter.h:27,
> from ../../../../log4cxx/src/main/cpp/andfilter.cpp:18:
> ../../../../log4cxx/src/main/include/log4cxx/spi/loggingevent.h:171:45:
> error: declaration of ‘typedef log4cxx::spi::KeySet
> log4cxx::spi::LoggingEvent::KeySet’ [-fpermissive]
> typedef spi::KeySet KeySet;
> ^
> In file included from
> ../../../../log4cxx/src/main/include/log4cxx/helpers/objectptr.h:21:0,
> from
> ../../../../log4cxx/src/main/include/log4cxx/spi/filter.h:21,
> from
> ../../../../log4cxx/src/main/include/log4cxx/filter/andfilter.h:27,
> from ../../../../log4cxx/src/main/cpp/andfilter.cpp:18:
> ../../../../log4cxx/src/main/include/log4cxx/spi/loggingevent.h:46:34: error:
> changes meaning of ‘KeySet’ from ‘typedef class
> std::vector<std::basic_string<char> > log4cxx::spi::KeySet’ [-fpermissive]
> LOG4CXX_LIST_DEF(KeySet, LogString);
> ^
> ../../../../log4cxx/src/main/include/log4cxx/log4cxx.h:48:55: note: in
> definition of macro ‘LOG4CXX_LIST_DEF’
> #define LOG4CXX_LIST_DEF(N, T) typedef std::vector<T> N
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