unit test failed

[yzhh029]

g++ 10.2
OS: ubuntu 20.04, kernel 5.8.10

[doctest] doctest version is "2.4.0"
[doctest] run with "--help" for options

/home/yzhh/xynet/test/coroutine_test.cpp:63:
TEST CASE: lots of synchronous completions doesn't result in stack-overflow

/home/yzhh/xynet/test/coroutine_test.cpp:63: FATAL ERROR: test case CRASHED: SIGSEGV - Segmentation violation signal

===============================================================================
[doctest] test cases: 3 | 2 passed | 1 failed | 13 skipped
[doctest] assertions: 3 | 3 passed | 0 failed |
[doctest] Status: FAILURE!
Segmentation fault (core dumped)

Starting program: xynet/build/test/xynet_tests
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[doctest] doctest version is "2.4.0"
[doctest] run with "--help" for options

Program received signal SIGSEGV, Segmentation fault.
0x00005555555874bc in xynet::detail::task_promise::~task_promise (this=<error reading variable: Cannot access memory at address 0x7fffff7feff8>,
__in_chrg=) at /home/yzhh/xynet/include/xynet/coroutine/task.h:145
145 ~task_promise()
(gdb) bt
#0 0x00005555555874bc in xynet::detail::task_promise::~task_promise (this=<error reading variable: Cannot access memory at address 0x7fffff7feff8>,
__in_chrg=) at /home/yzhh/xynet/include/xynet/coroutine/task.h:145
#1 0x000055555558586b in _DOCTEST_ANON_FUNC_6()::{lambda()#1}::operator() (frame_ptr=0x5555556001a0) at /home/yzhh/xynet/test/coroutine_test.cpp:68
#2 0x00005555555858d3 in _DOCTEST_ANON_FUNC_6()::{lambda()#1}::operator() (frame_ptr=0x5555556001a0) at /home/yzhh/xynet/test/coroutine_test.cpp:65
#3 0x0000555555586414 in std::__n4861::coroutine_handle::destroy (this=0x555555600a10) at /usr/include/c++/10/coroutine:128
#4 0x0000555555587464 in xynet::task::~task (this=0x555555600a10, __in_chrg=) at /home/yzhh/xynet/include/xynet/coroutine/task.h:385
#5 0x0000555555585b99 in _DOCTEST_ANON_FUNC_6()::{lambda()#2}::operator() (frame_ptr=0x5555556009c0) at /home/yzhh/xynet/test/coroutine_test.cpp:77
#6 0x0000555555585847 in _DOCTEST_ANON_FUNC_6()::{lambda()#1}::operator() (frame_ptr=0x5555556001a0) at /home/yzhh/xynet/test/coroutine_test.cpp:65
#7 0x0000555555585c84 in _DOCTEST_ANON_FUNC_6()::{lambda()#2}::operator() (frame_ptr=0x5555556009c0) at /home/yzhh/xynet/test/coroutine_test.cpp:70
#8 0x0000555555585847 in _DOCTEST_ANON_FUNC_6()::{lambda()#1}::operator() (frame_ptr=0x5555556001a0) at /home/yzhh/xynet/test/coroutine_test.cpp:65
....
seems more than thousands of these two lines in the stack:
#1077 0x0000555555585c84 in _DOCTEST_ANON_FUNC_6()::{lambda()#2}::operator() (frame_ptr=0x5555556009c0) at /home/yzhh/xynet/test/coroutine_test.cpp:70
#1078 0x0000555555585847 in _DOCTEST_ANON_FUNC_6()::{lambda()#1}::operator() (frame_ptr=0x5555556001a0) at /home/yzhh/xynet/test/coroutine_test.cpp:65

Thanks

[yzhh029]

Seems the max supported number is 65000, test will fail for 66000.

    for (int i = 0; i < 65'000; ++i)
    {
      sum = sum + co_await completesSynchronously();
    }