[omniORB] Problem inserting an array of structs containing strings into an any

[Brian Neal]

Hello,

I am using omniORB 4.0.6 under both cygwin and linux, and I'm seeing
the same problem.

I have the following IDL in a file called test.idl:

module Test
{
   struct TestStruct
   {
      long a;
      string b;
   };

   typedef TestStruct TestStructArray[4];
};

And I have the following C++ code in a file called main.cpp:

#include <iostream>
#include <ostream>
#include <iterator>
#include <algorithm>
#include <sstream>
#include <CORBA.h>
#include "test.h"

namespace Test
{
   std::ostream& operator<<(std::ostream& os, const Test::TestStruct& ts)
   {
      os << "a = " << ts.a << "; b = '" << ts.b << '\'' << std::flush;
      return os;
   }
}

int main()
{
   const int numElems = 4;

   Test::TestStructArray array;
   for (int i = 0; i < numElems; ++i)
   {
      array[i].a = i;
      array[i].b = "test";
   }
   std::copy(array, array + numElems,
                 std::ostream_iterator<Test::TestStruct>(std::cout, "\n"));

   CORBA::Any a;
   std::cout << "Inserting into any..." << std::endl;
   a <<= Test::TestStructArray_forany(array);  // ****segfault right here

   std::cout << "Now extracting..." << std::endl;

   Test::TestStructArray_forany fa;
   if (a >>= fa)
   {
      std::cout << "Extraction succeeded; contents = " << std::endl;
      std::copy(&fa[0UL], &fa[0UL] + numElems,
                    std::ostream_iterator<Test::TestStruct>(std::cout, "\n"));
   }
   return 0;
}

I get a segfault when I insert the forany into the any at the line marked ****

I build and run the program as follows:

$ omniidl -bcxx -Wbh=.h -Wba -Wbs=.cpp -Wbd=.cpp test.idl

bgneal1 at CRP02082 ~/forany
$ scons
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
g++ -o main.o -c -Wall -W -g -I/usr/local/include/omniORB4 main.cpp
g++ -o test.o -c -Wall -W -g -I/usr/local/include/omniORB4 test.cpp
test.cpp:96: warning: unused parameter '_desc'
test.cpp:155: warning: unused parameter '_contiguous'
g++ -o test.exe -Wl,--enable-auto-import test.o main.o
-L/usr/local/lib -Wl,--start-group -lomniORB4
 -lomniDynamic4 -lomnithread -lCOS4 -Wl,--end-group
scons: done building targets.

bgneal1 at CRP02082 ~/forany
$ ./test.exe
a = 0; b = 'test'
a = 1; b = 'test'
a = 2; b = 'test'
a = 3; b = 'test'
Inserting into any...
Segmentation fault (core dumped)

I have changed the struct member b from a string to a long, an any,
and a sequence of longs, and when I do, I don't get a seqfault.

I am using g++ version 3.4.4 under cygwin.

Any ideas? Thanks.

Brian Neal

PS
(Note also that I had to use 0UL when I index into the forany fa. I
get a weird compiler error about ISO C++ thinking the operator[] is
ambiguous if I index with just a plain int 0. I think this is because
there are two sets of operator[] for the forany.)