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Posted to notifications@logging.apache.org by "rm5248 (via GitHub)" <gi...@apache.org> on 2025/11/22 15:14:48 UTC
[I] compile failure with AsyncBuffer [logging-log4cxx]
rm5248 opened a new issue, #563:
URL: https://github.com/apache/logging-log4cxx/issues/563
It's not immediatetly obvious to me as to why this is broken, but g++ 12.2 on Debian doesn't compile cleanly:
```
robert@debian:~/logging-log4cxx/build$ cmake ..
-- The CXX compiler identification is GNU 12.2.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.1")
-- Checking for module 'apr-1'
-- Found apr-1, version 1.7.2
-- Found APR: /usr/lib/x86_64-linux-gnu/libapr-1.so
-- Checking for module 'apr-util-1'
-- Found apr-util-1, version 1.6.3
-- Found APR-Util: /usr/lib/x86_64-linux-gnu/libaprutil-1.so;/usr/lib/x86_64-linux-gnu/libldap.so;/usr/lib/x86_64-linux-gnu/liblber.so
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE
-- Looking for C++ include locale
-- Looking for C++ include locale - found
-- Looking for mbsrtowcs
-- Looking for mbsrtowcs - found
-- Looking for wcstombs
-- Looking for wcstombs - found
-- Looking for fwide
-- Looking for fwide - found
-- Looking for syslog
-- Looking for syslog - found
-- Looking for pthread_sigmask
-- Looking for pthread_sigmask - found
-- Looking for pthread_self
-- Looking for pthread_self - found
--
--
-- Log4cxx configuration summary:
--
-- C++ compiler .................... : /usr/bin/c++
-- C++ features requested: ......... : 20
-- Build shared library ............ : ON
-- Build tests ..................... : ON
-- Build examples................... : ON
-- Build fuzzers.................... : OFF
-- Build site ...................... : OFF
-- Install prefix .................. : /usr/local
-- log4cxx library name ............ : log4cxx
-- log4cxx namespace ............... : log4cxx
-- log4cxx char API ................ : ON
-- log4cxx wchar API ............... : ON
-- log4cxx unichar API ............. : OFF
-- log4cxx char type ............... : utf-8
-- character encoding .............. : utf-8
-- Networking support .............. : ON
-- DOMConfigurator support ......... : ON
-- Qt support ...................... : OFF
-- LOG4CXX_XXXX_ASYNC macros ....... : ON
-- LOG4CXX_XXXX_FMT_ASYNC macros ... : OFF
-- C++ version and Boost settings:
-- Prefer boost: ................... : OFF
-- make_unique implementation :..... : std::make_unique
-- filesystem implementation ....... : std::filesystem
-- format implementation ........... : fmt::format
-- thread_local support? ........... : TRUE
-- Applications required for tests:
-- zip ............................. : /usr/bin/zip
-- sed ............................. : /usr/bin/sed
-- gzip ............................ : /usr/bin/gzip
-- Available appenders:
-- Async Appender .................. : ON
-- ODBC Appender ................... : OFF
-- DB Appender ..................... : ON
-- SMTP Appender ................... : OFF
-- XMLSocketAppender ............... : ON
-- SyslogAppender .................. : ON
-- Using syslog.h .................. : ON
-- TelnetAppender .................. : ON
-- ConsoleAppender ................. : ON
-- FileAppender .................... : ON
-- RollingFileAppender ............. : ON
-- MultiprocessRollingFileAppender . : OFF
-- Available layouts:
-- HTMLLayout ...................... : ON
-- JSONLayout ...................... : ON
-- PatternLayout ................... : ON
-- SimpleLayout .................... : ON
-- XMLLayout ....................... : ON
-- FMTLayout ....................... : OFF
-- Configuring done
-- Generating done
-- Build files have been written to: /home/robert/logging-log4cxx/build
robert@debian:~/logging-log4cxx/build$ make
[ 1%] Building CXX object src/main/include/CMakeFiles/log4cxx-include.dir/empty-lib-stub.cpp.o
[ 1%] Linking CXX static library liblog4cxx-include.a
[ 1%] Built target log4cxx-include
[ 1%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/action.cpp.o
[ 1%] Building CXX object src/main/cpp/CMakeFiles/log4cxx.dir/andfilter.cpp.o
In file included from /home/robert/logging-log4cxx/src/main/include/log4cxx/logger.h:26,
from /home/robert/logging-log4cxx/src/main/include/log4cxx/spi/loggingevent.h:23,
from /home/robert/logging-log4cxx/src/main/include/log4cxx/spi/filter.h:23,
from /home/robert/logging-log4cxx/src/main/include/log4cxx/filter/andfilter.h:21,
from /home/robert/logging-log4cxx/src/main/cpp/andfilter.cpp:18:
/home/robert/logging-log4cxx/src/main/include/log4cxx/helpers/asyncbuffer.h: In member function ‘log4cxx::helpers::AsyncBuffer& log4cxx::helpers::AsyncBuffer::operator<<(const T&)’:
/home/robert/logging-log4cxx/src/main/include/log4cxx/helpers/asyncbuffer.h:87:39: error: static assertion failed: operator<<(std::ostream&) overload must be provided
87 | static_assert(false, "operator<<(std::ostream&) overload must be provided");
| ^~~~~
/home/robert/logging-log4cxx/src/main/include/log4cxx/helpers/asyncbuffer.h: In member function ‘log4cxx::helpers::AsyncBuffer& log4cxx::helpers::AsyncBuffer::operator<<(const T&&)’:
/home/robert/logging-log4cxx/src/main/include/log4cxx/helpers/asyncbuffer.h:142:39: error: static assertion failed: operator<<(std::ostream&) overload must be provided
142 | static_assert(false, "operator<<(std::ostream&) overload must be provided");
| ^~~~~
make[2]: *** [src/main/cpp/CMakeFiles/log4cxx.dir/build.make:90: src/main/cpp/CMakeFiles/log4cxx.dir/andfilter.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1352: src/main/cpp/CMakeFiles/log4cxx.dir/all] Error 2
make: *** [Makefile:146: all] Error 2
```
I can get around the problem by setting the C++ standard to 17
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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "swebb2066 (via GitHub)" <gi...@apache.org>.
swebb2066 commented on issue #563:
URL: https://github.com/apache/logging-log4cxx/issues/563#issuecomment-3568584734
Yes, good idea - I think that would save us (and users) some trouble
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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "swebb2066 (via GitHub)" <gi...@apache.org>.
swebb2066 commented on issue #563:
URL: https://github.com/apache/logging-log4cxx/issues/563#issuecomment-3567560685
Could you try it with GCC 12.5 which is the most recent GCC 12?
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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "s9w (via GitHub)" <gi...@apache.org>.
s9w commented on issue #563:
URL: https://github.com/apache/logging-log4cxx/issues/563#issuecomment-3883704418
This happens to us as well with a visual studio 17.14.25 (visual studio 2022, Windows)
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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "rm5248 (via GitHub)" <gi...@apache.org>.
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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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "rm5248 (via GitHub)" <gi...@apache.org>.
rm5248 closed issue #563: compile failure with AsyncBuffer
URL: https://github.com/apache/logging-log4cxx/issues/563
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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "rm5248 (via GitHub)" <gi...@apache.org>.
rm5248 commented on issue #563:
URL: https://github.com/apache/logging-log4cxx/issues/563#issuecomment-3887653368
> This happens to us as well with a visual studio 17.14.25 (visual studio 2022, Windows). Log4cxx 1.6.1
could you create a new issue with the error that you're seeing?
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Re: [I] compile failure with AsyncBuffer [logging-log4cxx]
Posted by "rm5248 (via GitHub)" <gi...@apache.org>.
rm5248 commented on issue #563:
URL: https://github.com/apache/logging-log4cxx/issues/563#issuecomment-3567967018
I can try to compile it later, but I'm more concerned with building out of the box without needing to install a custom compiler.
This is the latest version able to be installed thru the Debian repos:
```
robert@debian:~/logging-log4cxx/build$ g++ --version
g++ (Debian 12.2.0-14+deb12u1) 12.2.0
Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
```
Two thoughts:
- this could be related to the `__cpp_concepts` check, there are two versions: `201907L` and `202002L`, we use the second one
- it could be a GCC bug in the 12.x series. I have had to do some checks before to see what compiler version is being used and turn on/off certain code. The `__GNUC__`, `__GNUC_MINOR__`, and `__GNUC_PATCHLEVEL__` macros are useful here
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