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Ericsson / CodeCompass

CodeCompass is a software comprehension tool for large scale software written in C/C++ and Java
https://codecompass.net
GNU General Public License v3.0
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crash on xerces using the 'get class collaboration diagram' when diagram is large #336

Closed steakhal closed 8 months ago

steakhal commented 5 years ago

CodeCompass crashes on Xerces when we call class collaboration diagram on a certain class from vscode.

To reproduce I attach the neccessary revision details for the related sources. I also (would) attach the corecdump for the mentioned crash, but it is about 250Mb I cant upload it here. Later on I will comment a link to it if needed. Also the call stack and the raw console output.

Later on, if I have spare time, I'll look forward to hunt this one down.

codecompass sources: remote: https://github.com/mcserep/CodeCompass.git branch and commit: cefp2019 320fa9d Update ODB generated file include for LSP service with Ericsson#323.

xerces sources: remote: https://github.com/apache/xerces-c.git branch and commit: trunk be81663b9 Remove documentation of no RTTI requirement

xerces-c/src/xercesc/sax/InputSource.hpp:62 class SAX_EXPORT InputSource : public XMemory requesting the class collaboration diagram on XMemory this from vscode

cefp@ccvm:~/xerces-c$ uname -a
Linux ccvm 4.15.0-51-generic #55-Ubuntu SMP Wed May 15 14:27:21 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
(gdb) bt
#0  0x00007ffff5709e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff570b801 in __GI_abort () at abort.c:79
#2  0x00007ffff5754897 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff5881b9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#3  0x00007ffff575b90a in malloc_printerr (str=str@entry=0x7ffff5883890 "double free or corruption (!prev)") at malloc.c:5350
#4  0x00007ffff5762e84 in _int_free (have_lock=0, p=0x555555f195b0, av=0x7ffff5ab6c40 <main_arena>) at malloc.c:4281
#5  0x00007ffff5762e84 in __GI___libc_free (mem=0x555555f195c0) at malloc.c:3124
#6  0x00007fffda51d159 in  () at /usr/lib/x86_64-linux-gnu/graphviz/libgvplugin_dot_layout.so.6
#7  0x00007ffff5152ee4 in gvFreeLayout () at /usr/lib/x86_64-linux-gnu/libgvc.so.6
#8  0x00007ffff788c557 in cc::util::Graph::output[abi:cxx11](cc::util::Graph::Format) const () at /home/cefp/codecompass/install/bin/../lib/serviceplugin/libcppservice.so
#9  0x00007ffff783c361 in cc::service::language::CppServiceHandler::getDiagram(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int) () at /home/cefp/codecompass/install/bin/../lib/serviceplugin/libcppservice.so
#10 0x00007ffff7bbb76c in cc::service::lsp::LspServiceHandler::nodeDiagram[abi:cxx11](cc::service::lsp::DiagramParams const&) ()
    at /home/cefp/codecompass/install/bin/../lib/serviceplugin/liblspservice.so
#11 0x00005555555a4d2b in cc::webserver::LspHandler::beginRequest(mg_connection*) ()
#12 0x000055555559fe96 in cc::webserver::MainRequestHandler::begin_request_handler(mg_connection*) ()
#13 0x00005555555a0d46 in cc::webserver::MainRequestHandler::operator()(mg_connection*, mg_event) ()
#14 0x00005555555a133b in cc::webserver::ThreadedMongoose::delegater(mg_connection*, mg_event) ()
#15 0x00007ffff790e6e3 in on_recv_data () at /home/cefp/codecompass/install/bin/../lib/serviceplugin/libcppservice.so
#16 0x00007ffff790fe48 in mg_ev_handler () at /home/cefp/codecompass/install/bin/../lib/serviceplugin/libcppservice.so
#17 0x00007ffff7906e3d in ns_read_from_socket () at /home/cefp/codecompass/install/bin/../lib/serviceplugin/libcppservice.so
#18 0x00007ffff7908332 in ns_server_poll () at /home/cefp/codecompass/install/bin/../lib/serviceplugin/libcppservice.so
#19 0x00005555555a138d in cc::webserver::ThreadedMongoose::serve(void*) ()
#20 0x00005555555a2c88 in void cc::webserver::ThreadedMongoose::run<void>(void*, std::function<int (mg_connection*, mg_event)>) ()
#21 0x00005555555a1ce7 in cc::webserver::ThreadedMongoose::run(std::function<int (mg_connection*, mg_event)>) ()
#22 0x00005555555915ed in main ()

raw-log:

cefp@ccvm:~/xerces-c/build$ /home/cefp/codecompass/install/bin/CodeCompass_webserver   --workspace /home/cefp/my_workspace   --database "pgsql:database=xerces;host=localhost;port=5432;user=compass"
[INFO] Mongoose web server starting on port 8080
[INFO] Search server started!
[INFO] Start serving search for index /home/cefp/my_workspace/xerces/search
Error: trouble in init_rank
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    %0 1
    %0 1
    %0 1
    %0 1
    %0 1
    %0 1
    %0 2
    %0 1
    %0 1
    %0 1
    %0 1
    %0 1
    %0 1
libpath/shortest.c:324: triangulation failed
libpath/shortest.c:192: source point not in any triangle
Error: in routesplines, Pshortestpath failed
libpath/shortest.c:324: triangulation failed
libpath/shortest.c:192: source point not in any triangle
Error: in routesplines, Pshortestpath failed
libpath/shortest.c:324: triangulation failed
libpath/shortest.c:192: source point not in any triangle
Error: in routesplines, Pshortestpath failed
libpath/shortest.c:324: triangulation failed
libpath/shortest.c:192: source point not in any triangle
Error: in routesplines, Pshortestpath failed
Error: lost 9187852835683441644 16146355764392145917 edge
Error: lost 5699161865892693104 18239899674024799333 edge
Error: lost 18352624887942426466 5699161865892693104 edge
Error: lost 15889171867026132079 12245182348721028704 edge
double free or corruption (out)
Aborted (core dumped)
mcserep commented 5 years ago

Thanks for the bug report. A minor remark: I don't think it mattered that you requested the class collaboration diagram from VSCode, through LSP, as the issue is seemingly with Graphviz, producing the SVG diagram.

mcserep commented 3 years ago

Reevaluating this issue now I have found that some SVG output is now produced now in <10s for the given location:

xerces-c/src/xercesc/sax/InputSource.hpp:62 class SAX_EXPORT InputSource : public XMemory requesting the class collaboration diagram on XMemory

However the diagram is not displayed in the browser. I haven't checked whether the returned SVG is a correct diagram.

mcserep commented 8 months ago

I reevaluated this bug report now, and the class collaboration diagram for the mentioned XMemory class was produced and displayed after a few seconds on https://codecompass.net/. I consider this bug report resolved.