Hi.
Compiled and installed protobuf-2.4.1, Oracle Linux 6, 64 bit kernel.
This piece of code failed with SIGSEGV. The code is ran on a newly
created pthread:
while (1) {
Agent agent;
if (!agent.ParseFromZeroCopyStream(fis)) {
DBG("Failed to receive message, closing socket\n");
break;
}
....
}
Core was generated by `./out/agent -D'.
Program terminated with signal 11, Segmentation fault.
#0 0x000000000040b8db in
google::protobuf::internal::RepeatedPtrFieldBase::Get<google::protobuf::RepeatedPtrField<LastSeq>::TypeHandler>
(
this=0x7f20680053b8, index=0)
at /usr/local/include/google/protobuf/repeated_field.h:660
660 return *cast<TypeHandler>(elements_[index]);
Missing separate debuginfos, use: debuginfo-install
glibc-2.12-1.47.el6_2.9.x86_64 libgcc-4.4.6-3.el6.x86_64 libstdc+
+-4.4.6-3.el6.x86_64
(gdb) where
#0 0x000000000040b8db in
google::protobuf::internal::RepeatedPtrFieldBase::Get<google::protobuf::RepeatedPtrField<LastSeq>::TypeHandler>
(
this=0x7f20680053b8, index=0)
at /usr/local/include/google/protobuf/repeated_field.h:660
#1 0x000000000040b822 in
google::protobuf::RepeatedPtrField<LastSeq>::Get (
this=0x7f20680053b8, index=0)
at /usr/local/include/google/protobuf/repeated_field.h:860
#2 0x000000000040b388 in Agent_LoadParams::generators
(this=0x7f2068005380,
index=0) at agent/shoal.pb.h:1536
#3 0x000000000040fa80 in Agent_LoadParams::IsInitialized (
this=0x7f2068005380) at gen/proto/cpp/agent/shoal.pb.cc:1122
#4 0x0000000000410c6a in Agent_SetTargetDetails::IsInitialized (
this=0x7f2068005990) at gen/proto/cpp/agent/shoal.pb.cc:1448
#5 0x00000000004119f4 in Agent::IsInitialized (this=0x7f206f7fde30)
at gen/proto/cpp/agent/shoal.pb.cc:1711
#6 0x000000000041d5e1 in InlineMergeFromCodedStream
(this=0x7f206f7fde30,
input=0x7f206f7fddb0) at google/protobuf/message_lite.cc:122
#7 InlineParseFromCodedStream (this=0x7f206f7fde30,
input=0x7f206f7fddb0)
at google/protobuf/message_lite.cc:132
#8 google::protobuf::MessageLite::ParseFromCodedStream
(this=0x7f206f7fde30,
input=0x7f206f7fddb0) at google/protobuf/message_lite.cc:161
#9 0x000000000041d846 in
google::protobuf::MessageLite::ParseFromZeroCopyStream
(this=0x7f206f7fde30, input=<value optimized out>)
at google/protobuf/message_lite.cc:170
#10 0x0000000000403d33 in msg_proc (arg=0x7f20700008c0) at agent/
agent.C:279
#11 0x000000365a0077f1 in start_thread () from /lib64/libpthread.so.0
#12 0x00000036598e5ccd in clone () from /lib64/libc.so.6
(gdb) list
655
656 template <typename TypeHandler>
657 inline const typename TypeHandler::Type&
658 RepeatedPtrFieldBase::Get(int index) const {
659 GOOGLE_DCHECK_LT(index, size());
660 return *cast<TypeHandler>(elements_[index]);
661 }
662
663 template <typename TypeHandler>
664 inline typename TypeHandler::Type*
(gdb) print elements_
$1 = (void **) 0xc0000000c
(gdb) print *elements_
Cannot access memory at address 0xc0000000c
Any clue on where to dig?
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