Segfault with empty co_main when compiling with BOOST_COBALT_NO_PMR

[nyibbang]

Hello,

I'm having a segmentation fault with AddressSanitizer when building an empty co_main program while disabling usage of PMR (so I set BOOST_COBALT_NO_PMR).

• OS: Ubuntu 22.04
• Compiler: g++-13 (Ubuntu 13.1.0-8ubuntu1~22.04) 13.1.0
• Boost version: 1.86.0

Assuming I have my boost install in /home/nyibbang/boost_install, my compile command is:

g++-13 \
    -DBOOST_COBALT_NO_PMR \
    -g -fsanitize=address -fno-omit-frame-pointer -std=gnu++20 \
    -isystem /home/nyibbang/boost_install/include \
    -L/home/nyibbang/boost_install/lib \
    ../main.cpp \
    /home/nyibbang/boost_install/lib/libboost_cobalt.a \
    /home/nyibbang/boost_install/lib/libboost_container.a \
    -lrt  -lpthread \
    -o test_cobalt

The main.cpp source file is:

#include <boost/cobalt.hpp>

boost::cobalt::main co_main(int, char**) {
    co_return 0;
}

When I run the executable, I instantly get a sanitizer error:

Output

================================================================= ==2824500==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x592a8cbe1b61 bp 0x7ffc6f4ab080 sp 0x7ffc6f4ab070 T0) ==2824500==The signal is caused by a READ memory access. ==2824500==Hint: this fault was caused by a dereference of a high value address (see register values below). Disassemble the provided pc to learn which register was used. #0 0x592a8cbe1b61 in boost::asio::execution::detail::any_executor_base::~any_executor_base() (/home/nyibbang/test_cobalt/build/test_cobalt+0xfb61) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #1 0x592a8cbe3be3 in boost::asio::execution::any_executor, boost::asio::execution::detail::blocking::never_t<0>, boost::asio::execution::prefer_only >, boost::asio::execution::prefer_only >, boost::asio::execution::prefer_only >, boost::asio::execution::prefer_only >, boost::asio::execution::prefer_only > >::~any_executor() (/home/nyibbang/test_cobalt/build/test_cobalt+0x11be3) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #2 0x592a8cbe3c03 in boost::asio::any_io_executor::~any_io_executor() (/home/nyibbang/test_cobalt/build/test_cobalt+0x11c03) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #3 0x592a8cbec87c in boost::asio::executor_work_guard::~executor_work_guard() (/home/nyibbang/test_cobalt/build/test_cobalt+0x1a87c) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #4 0x592a8cbeafb2 in std::_Optional_payload_base >::_M_destroy() (/home/nyibbang/test_cobalt/build/test_cobalt+0x18fb2) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #5 0x592a8cbe9098 in std::_Optional_payload_base >::_M_reset() (/home/nyibbang/test_cobalt/build/test_cobalt+0x17098) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #6 0x592a8cbfe871 in std::_Optional_base_impl, std::_Optional_base, false, false> >::_M_reset() /usr/include/c++/13/optional:468 #7 0x592a8cbfd711 in std::enable_if, boost::asio::io_context::basic_executor_type, 0ul> >, boost::asio::executor_work_guard&>::type std::optional >::emplace, 0ul> >(boost::asio::io_context::basic_executor_type, 0ul>&&) /usr/include/c++/13/optional:917 #8 0x592a8cbf1227 in boost::cobalt::detail::main_promise::run_main(boost::cobalt::main) libs/cobalt/src/main.cpp:32 #9 0x592a8cbe5ecb in main (/home/nyibbang/test_cobalt/build/test_cobalt+0x13ecb) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) #10 0x781f5e629d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58 #11 0x781f5e629e3f in __libc_start_main_impl ../csu/libc-start.c:392 #12 0x592a8cbdce24 in _start (/home/nyibbang/test_cobalt/build/test_cobalt+0xae24) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/home/nyibbang/test_cobalt/build/test_cobalt+0xfb61) (BuildId: 584ff56445bf020733d8703454eeb1aac63e6ab4) in boost::asio::execution::detail::any_executor_base::~any_executor_base() ==2824500==ABORTING