SEGV in the test framework

[whatsthecraic]

Hi there,
I'm hitting a spurious SEGV in a multithreaded test, but, at this point, I'm not sure whether this depends by my program or by the test framework:

Thread 32 "test_parallel" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff4cab700 (LWP 9574)]
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string (this=0x58, __in_chrg=<optimized out>) at /build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:658
658	/build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h: No such file or directory.
(gdb) bt
#0  std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string (this=0x58, __in_chrg=<optimized out>) at /build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:658
#1  0x00005555555a4178 in Catch::AssertionResultData::~AssertionResultData (this=0x38, __in_chrg=<optimized out>) at ../tests/catch.hpp:5322
#2  0x00005555555aa7b6 in Catch::AssertionResult::~AssertionResult (this=0x0, __in_chrg=<optimized out>) at ../tests/catch.hpp:5336
#3  0x00005555555c459d in Catch::Option<Catch::AssertionResult>::reset (this=0x7fffffffde88) at ../tests/catch.hpp:4385
#4  0x00005555555b49bd in Catch::Option<Catch::AssertionResult>::operator= (this=0x7fffffffde88, _value=...) at ../tests/catch.hpp:4378
#5  0x000055555557a578 in Catch::RunContext::assertionEnded (this=0x7fffffffde40, result=...) at ../tests/catch.hpp:12597
#6  0x000055555557c333 in Catch::RunContext::handleNonExpr (this=0x7fffffffde40, info=..., resultType=Catch::ResultWas::Ok, reaction=...) at ../tests/catch.hpp:12924
#7  0x000055555556bb8c in Catch::AssertionHandler::handleExceptionThrownAsExpected (this=0x7ffff4caad60) at ../tests/catch.hpp:8201
#8  0x0000555555594cda in <lambda(uint64_t)>::operator()(uint64_t) const (__closure=0x5555556beb20, vertex_id=70) at ../tests/test_parallel.cpp:131
#9  0x00005555555a2f71 in std::__invoke_impl<void, ____C_A_T_C_H____T_E_S_T____2()::<lambda(uint64_t)>, long unsigned int>(std::__invoke_other, <lambda(uint64_t)> &&) (__f=...) at /usr/include/c++/9.3.0/bits/invoke.h:60
#10 0x00005555555a2e9a in std::__invoke<____C_A_T_C_H____T_E_S_T____2()::<lambda(uint64_t)>, long unsigned int>(<lambda(uint64_t)> &&) (__fn=...) at /usr/include/c++/9.3.0/bits/invoke.h:95
#11 0x00005555555a2a63 in std::thread::_Invoker<std::tuple<____C_A_T_C_H____T_E_S_T____2()::<lambda(uint64_t)>, long unsigned int> >::_M_invoke<0, 1>(std::_Index_tuple<0, 1>) (this=0x5555556beb18) at /usr/include/c++/9.3.0/thread:244
#12 0x00005555555a1e12 in std::thread::_Invoker<std::tuple<____C_A_T_C_H____T_E_S_T____2()::<lambda(uint64_t)>, long unsigned int> >::operator()(void) (this=0x5555556beb18) at /usr/include/c++/9.3.0/thread:251
#13 0x00005555555a162a in std::thread::_State_impl<std::thread::_Invoker<std::tuple<____C_A_T_C_H____T_E_S_T____2()::<lambda(uint64_t)>, long unsigned int> > >::_M_run(void) (this=0x5555556beb10) at /usr/include/c++/9.3.0/thread:195
#14 0x00007ffff7d0cb24 in std::execute_native_thread_routine (__p=0x5555556beb10) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/thread.cc:80
#15 0x00007ffff7e3146f in start_thread () from /usr/lib/libpthread.so.0
#16 0x00007ffff7a163d3 in clone () from /usr/lib/libc.so.6
(gdb) info threads 
  Id   Target Id                                        Frame 
  1    Thread 0x7ffff76b2780 (LWP 9540) "test_parallel" 0x00007ffff7e32a67 in __pthread_clockjoin_ex () from /usr/lib/libpthread.so.0
  25   Thread 0x7ffff76b1700 (LWP 9567) "Teseo.GC"      0x00007ffff79de2d1 in clock_nanosleep@GLIBC_2.2.5 () from /usr/lib/libc.so.6
  26   Thread 0x7ffff6eb0700 (LWP 9568) "Teseo.TcTimer" 0x00007ffff7a1670e in epoll_wait () from /usr/lib/libc.so.6
  27   Thread 0x7fffde7fc700 (LWP 9569) "test_parallel" 0x00007ffff7cdf881 in base_of_encoded_value (encoding=<optimized out>, context=0x0) at /build/gcc/src/gcc/libstdc++-v3/../libgcc/unwind-pe.h:118
  28   Thread 0x7fffdeffd700 (LWP 9570) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  29   Thread 0x7ffff64ae700 (LWP 9571) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  30   Thread 0x7ffff5cad700 (LWP 9572) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  31   Thread 0x7ffff54ac700 (LWP 9573) "test_parallel" std::_Head_base<1ul, bool&, false>::_M_head (__b=...) at /usr/include/c++/9.3.0/tuple:160
* 32   Thread 0x7ffff4cab700 (LWP 9574) "test_parallel" std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string (this=0x58, __in_chrg=<optimized out>)
    at /build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:658
  33   Thread 0x7fffdffff700 (LWP 9575) "test_parallel" 0x00007ffff7f766bc in teseo::internal::context::ScopedEpoch::ScopedEpoch (this=0x7fffdfffead6) at ../src/context/scoped_epoch.cpp:26
  34   Thread 0x7fffdf7fe700 (LWP 9576) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  35   Thread 0x7fffddffb700 (LWP 9577) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  36   Thread 0x7fffdd7fa700 (LWP 9578) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  37   Thread 0x7fffdcff9700 (LWP 9579) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  38   Thread 0x7fffcffff700 (LWP 9580) "test_parallel" 0x00007ffff7f82d9e in teseo::internal::memstore::Index::Node::prefix_compare (this=0x7fffc0082100, search_key=..., search_key_level=@0x7fffcfffe804: 4)
    at ../src/memstore/index.cpp:863
  39   Thread 0x7fffcf7fe700 (LWP 9581) "test_parallel" 0x00007ffff7e3b4cf in __lll_lock_wait () from /usr/lib/libpthread.so.0
  40   Thread 0x7fffceffd700 (LWP 9582) "test_parallel" 0x00007ffff7aec2bb in uw_frame_state_for (context=0x7fffceffc5e0, fs=0x7fffceffc6d0) at /build/gcc/src/gcc/libgcc/unwind-dw2.c:1250
  41   Thread 0x7fffce7fc700 (LWP 9583) "test_parallel" teseo::internal::context::ScopedEpoch::ScopedEpoch (this=0x7fffce7fbaff) at ../src/context/scoped_epoch.cpp:24
  42   Thread 0x7fffcdffb700 (LWP 9584) "test_parallel" std::__shared_ptr_access<teseo::internal::context::ThreadContext, (__gnu_cxx::_Lock_policy)2, false, false>::operator-> (this=0x7fffaff8f000)
    at /usr/include/c++/9.3.0/bits/shared_ptr_base.h:1015

The incriminated code is: REQUIRE_THROWS(tx.get_weight(vertex_id, 10));

Linux, GCC v9.3.0, Catch v2.11.1

[horenmar]

As per documentation, multiple threads touching sections/assertions is not supported.