https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104852
Bug ID: 104852
Summary: std::[j]thread::detach() still gives segmentation
faults with glibc 2.34
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: lightningdzeyenr at gmail dot com
Target Milestone: ---
I'm using g++ 11.2.0 on Ubuntu 21.10 (Pop!_OS 21.10) and trying to compile a
project that uses the std::[j]thread::detach() function a lot. When I
statically link it, I always get a segmentation fault for what seems to be
something in the libpthread library. This happens with both std::thread and
std::jthread. ldd --version shows a glibc version of 2.34 (specifically
2.34-0ubuntu3.2), and ld --version shows 2.37, both versions at which this bug
should have been fixed. Here's the output of g++ -v:
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/11/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu [I'm using AMD Zen 3]
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 11.2.0-7ubuntu2'
--with-bugurl=file:///usr/share/doc/gcc-11/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-11
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-plugin --enable-default-pie --with-system-zlib
--enable-libphobos-checking=release --with-target-system-zlib=auto
--enable-objc-gc=auto --enable-multiarch --disable-werror --enable-cet
--with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32
--enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none=/build/gcc-11-ZPT0kp/gcc-11-11.2.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-11-ZPT0kp/gcc-11-11.2.0/debian/tmp-gcn/usr
--without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
--with-build-config=bootstrap-lto-lean --enable-link-serialization=2
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 11.2.0 (Ubuntu 11.2.0-7ubuntu2)
I'm compiling with the CMake command
> cmake source -DADD_FLAGS="-static -lpthread"
which adds these flags to the end of CMAKE_CXX_FLAGS, and
> cmake --build . -j 12
to build.
I can't provide the .i files because even compressed as a .tar.gz, the archive
is too big (4.5MB). However, this is reproducible by cloning the repo
(https://github.com/Slackadays/Hajime), cd hajime, and issuing the two CMake
commands above.
Output of GDB:
Thread 2 "hajime" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff7ff8640 (LWP 52019)]
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x0000000000510745 in std::thread::detach() ()
#2 0x000000000044ca76 in Server::startProgram (this=0x7022b0, method=...) at
/home/jackson/hajime/source/server.cpp:290
#3 0x000000000044ad15 in Server::startServer (this=0x7022b0, confFile=...) at
/home/jackson/hajime/source/server.cpp:112
#4 0x0000000000449d8f in std::__invoke_impl<void, void
(Server::*)(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >), std::shared_ptr<Server>,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
> (__f=
@0x6ff0c8: (void (Server::*)(Server * const,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>)) 0x44a298 <Server::startServer(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >)>, __t=...) at
/usr/include/c++/11/bits/invoke.h:74
#5 0x0000000000449c45 in std::__invoke<void
(Server::*)(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >), std::shared_ptr<Server>,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
> (__fn=
@0x6ff0c8: (void (Server::*)(Server * const,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>
>)) 0x44a298 <Server::startServer(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> >)>) at
/usr/include/c++/11/bits/invoke.h:96
#6 0x0000000000449b35 in std::thread::_Invoker<std::tuple<void
(Server::*)(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >), std::shared_ptr<Server>,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
> >::_M_invoke<0ul, 1ul, 2ul> (this=0x6ff098)
at /usr/include/c++/11/bits/std_thread.h:253
#7 0x000000000044958a in std::thread::_Invoker<std::tuple<void
(Server::*)(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >), std::shared_ptr<Server>,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
> >::operator() (this=0x6ff098)
at /usr/include/c++/11/bits/std_thread.h:260
#8 0x0000000000449422 in
std::thread::_State_impl<std::thread::_Invoker<std::tuple<void
(Server::*)(std::__cxx11::basic_string<char, std::char_traits<char>,
std::allocator<char> >), std::shared_ptr<Server>,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
> > >::_M_run (
this=0x6ff090) at /usr/include/c++/11/bits/std_thread.h:211
#9 0x00000000005104b4 in execute_native_thread_routine ()
#10 0x000000000058a877 in start_thread ()
#11 0x000000000060d814 in clone ()
(gdb)
