Why didn't you try a newer version? 1.65 is too old. On Thu, Nov 11, 2021 at 1:29 PM Senthil Cheetancheri via Boost-users < boost-users@lists.boost.org> wrote:

Hi,

I'm learning to use Boost.asio by going through the tutorials at [1].

However, the listing for "Synchronizing handlers in multithreaded programs" crashes on my Ubuntu. Source listing (about 70 lines) is at [2]. I have given my compilation steps, stack trace from gdb, and boost information below. Can you please advise how I can get this working right?

[1] https://www.boost.org/doc/libs/1_77_0/doc/html/boost_asio/tutorial.html [2] https://www.boost.org/doc/libs/1_77_0/doc/html/boost_asio/tutorial/tuttimer5...

I compiled and ran as follows:

$ g++ -g -o timer_5.1 timer_5.1.cpp -lpthread -lboost_thread $ ./timer_5.1 Timer 1: 0 Timer 2: 1 Timer 1: 2 Timer 2: 3 Timer 1: 4 Timer 2: 5 Timer 1: 6 Timer 2: 7 Timer 1: 8 Timer 2: 9 Segmentation fault (core dumped)

The backtrace from gdb is:

$ cat gdb_log.txt #0 0x00007ffff799f88b in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.65.1 #1 0x00007ffff79a0bd5 in ?? () from /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.65.1 #2 0x00007ffff7bbb6db in start_thread (arg=0x7ffff6851700) at pthread_create.c:463 #3 0x00007ffff711e71f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

I have the following boost library installed:

$ sudo apt show libboost-all-dev Package: libboost-all-dev Version: 1.65.1.0ubuntu1 Priority: optional Section: universe/libdevel Source: boost-defaults Origin: Ubuntu Maintainer: Ubuntu Developers Original-Maintainer: Debian Boost Team < pkg-boost-devel@lists.alioth.debian.org> Bugs: https://bugs.launchpad.net/ubuntu/+filebug Installed-Size: 10.2 kB Depends: libboost-dev, libboost-tools-dev, libboost-atomic-dev, libboost-chrono-dev, libboost-container-dev, libboost-context-dev, libboost-coroutine-dev, libboost-date-time-dev, libboost-exception-dev, libboost-fiber-dev, libboost-filesystem-dev, libboost-graph-dev, libboost-graph-parallel-dev, libboost-iostreams-dev, libboost-locale-dev, libboost-log-dev, libboost-math-dev, libboost-mpi-dev, libboost-mpi-python-dev, libboost-numpy-dev, libboost-program-options-dev, libboost-python-dev, libboost-random-dev, libboost-regex-dev, libboost-serialization-dev, libboost-signals-dev, libboost-stacktrace-dev, libboost-system-dev, libboost-test-dev, libboost-thread-dev, libboost-timer-dev, libboost-type-erasure-dev, libboost-wave-dev Homepage: http://www.boost.org/ Download-Size: 2,340 B APT-Manual-Installed: yes . . .

Thanks in advance.

Thanks, Senthil. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org https://lists.boost.org/mailman/listinfo.cgi/boost-users