> That's about all that I can get, even though capnproto is compiled with DEBUG.
Or shall I say, it should :/ On Friday, March 2, 2018 at 7:17:02 PM UTC+1, Marc Sune wrote: > > Hi guys, > > I am experiencing a _very_ strange segfault during JSON encoding of > message: > > ``` > Program received signal SIGSEGV, Segmentation fault. > [Switching to Thread 27946] > 0x0000000001e4b81a in std::__detail::_Hashtable_ebo_helper<1, > capnp::(anonymous namespace)::TypeHash, > true>::_S_cget(std::__detail::_Hashtable_ebo_helper<1, capnp::(anonymous > namespace)::TypeHash, true> const&) () > (gdb) bt > #0 0x0000000001e4b81a in std::__detail::_Hashtable_ebo_helper<1, > capnp::(anonymous namespace)::TypeHash, > true>::_S_cget(std::__detail::_Hashtable_ebo_helper<1, capnp::(anonymous > namespace)::TypeHash, true> const&) () > #1 0x0000000001e4b11a in std::__detail::_Hash_code_base<capnp::Type, > std::pair<capnp::Type const, capnp::JsonCodec::HandlerBase*>, > std::__detail::_Select1st, capnp::(anonymous namespace)::TypeHash, > std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, > true>::_M_h1() const () > #2 0x0000000001e4a976 in std::__detail::_Hash_code_base<capnp::Type, > std::pair<capnp::Type const, capnp::JsonCodec::HandlerBase*>, > std::__detail::_Select1st, capnp::(anonymous namespace)::TypeHash, > std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, > true>::_M_hash_code(capnp::Type const&) const () > #3 0x0000000001e4a401 in std::_Hashtable<capnp::Type, > std::pair<capnp::Type const, capnp::JsonCodec::HandlerBase*>, > std::allocator<std::pair<capnp::Type const, capnp::JsonCodec::HandlerBase*> > >, std::__detail::_Select1st, std::equal_to<capnp::Type>, capnp::(anonymous > namespace)::TypeHash, std::__detail::_Mod_range_hashing, > std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, > std::__detail::_Hashtable_traits<true, false, true> >::find(capnp::Type > const&) const () > #4 0x0000000001e483a3 in std::unordered_map<capnp::Type, > capnp::JsonCodec::HandlerBase*, capnp::(anonymous namespace)::TypeHash, > std::equal_to<capnp::Type>, std::allocator<std::pair<capnp::Type const, > capnp::JsonCodec::HandlerBase*> > >::find(capnp::Type const&) const () > #5 0x0000000001e443d5 in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #6 0x0000000001e44a6f in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #7 0x0000000001e45a36 in > capnp::JsonCodec::encodeField(capnp::StructSchema::Field, > capnp::DynamicValue::Reader, capnp::JsonValue::Builder) const () > #8 0x0000000001e45377 in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #9 0x0000000001e45a36 in > capnp::JsonCodec::encodeField(capnp::StructSchema::Field, > capnp::DynamicValue::Reader, capnp::JsonValue::Builder) const () > #10 0x0000000001e45377 in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #11 0x0000000001e45a36 in > capnp::JsonCodec::encodeField(capnp::StructSchema::Field, > capnp::DynamicValue::Reader, capnp::JsonValue::Builder) const () > #12 0x0000000001e45377 in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #13 0x0000000001e45a36 in > capnp::JsonCodec::encodeField(capnp::StructSchema::Field, > capnp::DynamicValue::Reader, capnp::JsonValue::Builder) const () > #14 0x0000000001e45618 in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #15 0x0000000001e45a36 in > capnp::JsonCodec::encodeField(capnp::StructSchema::Field, > capnp::DynamicValue::Reader, capnp::JsonValue::Builder) const () > #16 0x0000000001e45618 in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type, > capnp::JsonValue::Builder) const () > #17 0x0000000001e43fcc in > capnp::JsonCodec::encode(capnp::DynamicValue::Reader, capnp::Type) const () > #18 0x00000000009e02c7 in capnp::JsonCodec::encode<Message::Builder > const&> (this=0x7ffff22e1210, value=...) at > /home/marc/.../capnp/compat/json.h:216 > ``` > > That's about all that I can get, even though capnproto is compiled with > DEBUG. > > The message trying to be encoded (sorry, I am not sure I can share the > entire set of schemas), is a series of simple objects, which in the > inner-most object contains a list that is initialized normally: > > 115 s.initIfaceType(1); > > The funny part; not initializing it, doesn't make JsonCodec crash. But > initializing it, or initializing it + setting a value (valid one), produces > the crash always. > > Valgrind etc... doesn't complain until that point. > > I am trying to isolate the problem, to make it reproducible, but I am not > able yet. > > Any ideas on this? > > Thanks > -- You received this message because you are subscribed to the Google Groups "Cap'n Proto" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/capnproto.
