[Bug c++/87457] thread sanitizer false positive on virtual destructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87457 --- Comment #3 from SebastiansPublicAddress at googlemail dot com --- Is there something else, which libstdc++ depends on, that I need to build with ThreadSanitizer? libgcc or libatomic for example?
[Bug c++/87457] thread sanitizer false positive on virtual destructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87457 --- Comment #2 from SebastiansPublicAddress at googlemail dot com --- (In reply to Jonathan Wakely from comment #1) > I think the problem is that the std::thread code in libstdc++.so isn't built > with ThreadSanitizer. Wasn't easy to build libstdc++ with different flags (*), but now I think I did it, and I still get the errors. So I think this was not the cause. I'm quite sure that now I'm using a libstdc++ that's built with -fsanitize=thread because: - I added a printf to thread::join() and I see it when I reproduce the failure. - I see -fsanitize=thread in the output of "make" when I build libstdc++. (*) here's how I built libstdc++: - Build the whole gcc-8 debian source package $ sudo apt-get build-dep gcc-8 $ sudo apt-get source gcc-8 gcc-8-8.2.0$ debuild -b -uc -us - backup and remove gcc-8-8.2.0/build/x86_64-linux-gnu/libstdc++-v3 - configure with the same commandline as in the backup gcc-8-8.2.0/build/x86_64-linux-gnu/libstdc++-v3/config.log (fix quoting of --program-transform-name=s&$&-8&;s&^_64-linux-gnu-&) but with prefix /usr/local/tsan - set a few environment variables as suggested by the error messages repeat until build is sucessful - add --enable-cxx-flags=-fsanitize=thread - make, make install - export LD_LIBRARY_PATH=/usr/local/tsan/lib - build my test program with -L/usr/local/tsan/lib -I/usr/local/tsan/include - export LD_LIBRARY_PATH=/usr/local/tsan/lib
[Bug c++/87457] New: thread sanitizer false positive on virtual destructor
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87457 Bug ID: 87457 Summary: thread sanitizer false positive on virtual destructor Product: gcc Version: 8.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: SebastiansPublicAddress at googlemail dot com Target Milestone: --- Created attachment 44759 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44759=edit source code to reproduce the bug reproduce like this: $ g++ -g -fno-omit-frame-pointer -fsanitize=undefined -fsanitize=thread -o tsan_reproduce tsan_reproduce.cpp $ ./tsan_reproduce == WARNING: ThreadSanitizer: data race (pid=19509) Write of size 8 at 0x7b040800 by thread T2: #0 pipe (libtsan.so.0+0x2f079) #1 (libubsan.so.1+0x1aaed) #2 void std::__invoke_impl(std::__invoke_other, void (*&&)()) /usr/include/c++/8/bits/invoke.h:60 (tsan_reproduce+0x3efc) #3 std::__invoke_result::type std::__invoke(void (*&&)()) /usr/include/c++/8/bits/invoke.h:95 (tsan_reproduce+0x38e4) #4 decltype (__invoke((_S_declval<0ul>)())) std::thread::_Invoker >::_M_invoke<0ul>(std::_Index_tuple<0ul>) /usr/include/c++/8/thread:244 (tsan_reproduce+0x569f) #5 std::thread::_Invoker >::operator()() /usr/include/c++/8/thread:253 (tsan_reproduce+0x55b7) #6 std::thread::_State_impl > >::_M_run() /usr/include/c++/8/thread:196 (tsan_reproduce+0x554c) #7 (libstdc++.so.6+0xbbafe) Previous write of size 8 at 0x7b040800 by thread T1: #0 pipe (libtsan.so.0+0x2f079) #1 (libubsan.so.1+0x1aaed) #2 std::thread::_State_impl > >::~_State_impl() /usr/include/c++/8/thread:188 (tsan_reproduce+0x54a3) #3 (libstdc++.so.6+0xbbb07) Thread T2 (tid=19512, running) created by main thread at: #0 pthread_create (libtsan.so.0+0x2be2b) #1 std::thread::_M_start_thread(std::unique_ptr >, void (*)()) (libstdc++.so.6+0xbbd84) #2 main /home/sebastian/projects/photoalbum/lib/sqdbcpp/tsan_reproduce.cpp:18 (tsan_reproduce+0x346f) Thread T1 (tid=19511, finished) created by main thread at: #0 pthread_create (libtsan.so.0+0x2be2b) #1 std::thread::_M_start_thread(std::unique_ptr >, void (*)()) (libstdc++.so.6+0xbbd84) #2 main /home/sebastian/projects/photoalbum/lib/sqdbcpp/tsan_reproduce.cpp:17 (tsan_reproduce+0x345c) SUMMARY: ThreadSanitizer: data race (/usr/lib/x86_64-linux-gnu/libtsan.so.0+0x2f079) in pipe == ThreadSanitizer: reported 1 warnings My system: $ uname -a Linux roc-lin 4.18.0-1-amd64 #1 SMP Debian 4.18.8-1 (2018-09-18) x86_64 GNU/Linux $ g++ --version g++ (Debian 8.2.0-7) 8.2.0 Copyright (C) 2018 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.
[Bug c++/58161] New: internal compiler error while compiling SemaDeclCXX.cpp
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58161 Bug ID: 58161 Summary: internal compiler error while compiling SemaDeclCXX.cpp Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: blocker Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: SebastiansPublicAddress at googlemail dot com I'm compiling on a raspberry pi (no cross compiling), so this may be caused by insufficient memory. But gcc doesn't say so. It just says g++-4.7: internal compiler error: Killed (program cc1plus) Please submit a full bug report, with preprocessed source if appropriate. See file:///usr/share/doc/gcc-4.7/README.Bugs for instructions. The full commandline: g++-4.7 -I/home/pi/projects/llvm/llvm-3.3.build/include -I/home/pi/projects/llvm/llvm-3.3.build/tools/clang/lib/Sema -I/home/pi/projects/llvm/llvm-3.3.src/include -I/home/pi/projects/llvm/llvm-3.3.src/tools/clang/lib/Sema -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/pi/projects/llvm/llvm-3.3.src/tools/clang/lib/Sema/../../include -I/home/pi/projects/llvm/llvm-3.3.build/tools/clang/lib/Sema/../../include -O3 -fomit-frame-pointer -fvisibility-inlines-hidden -fno-exceptions -fno-rtti -fPIC -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing-pedantic -Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings -Wno-maybe-uninitialized -Wno-missing-field-initializers -c -MMD -MP -MF /home/pi/projects/llvm/llvm-3.3.build/tools/clang/lib/Sema/Release+Asserts/SemaDeclCXX.d.tmp -MT /home/pi/projects/llvm/llvm-3.3.build/tools/clang/lib/Sema/Release+Asserts/SemaDeclCXX.o -MT /home/pi/projects/llvm/llvm-3.3.build/tools/clang/lib/Sema/Release+Asserts/SemaDeclCXX.d /home/pi/projects/llvm/llvm-3.3.src/tools/clang/lib/Sema/SemaDeclCXX.cpp -o /home/pi/projects/llvm/llvm-3.3.build/tools/clang/lib/Sema/Release+Asserts/SemaDeclCXX.o $ g++-4.7 -v Using built-in specs. COLLECT_GCC=g++-4.7 COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.7/lto-wrapper Target: arm-linux-gnueabihf Configured with: ../src/configure -v --with-pkgversion='Debian 4.7.2-5+rpi1' --with-bugurl=file:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=c,c++,go,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.7 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libitm --enable-plugin --enable-objc-gc --disable-sjlj-exceptions --with-arch=armv6 --with-fpu=vfp --with-float=hard --enable-checking=release --build=arm-linux-gnueabihf --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf Thread model: posix gcc version 4.7.2 (Debian 4.7.2-5+rpi1)
[Bug c++/58161] internal compiler error while compiling SemaDeclCXX.cpp
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58161 --- Comment #1 from SebastiansPublicAddress at googlemail dot com --- Created attachment 30658 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=30658action=edit preprocessed file compressed because of file size limit
