The code is posted.

---------- Post updated at 04:04 PM ---------- Previous update was at 03:28 PM ----------

It's compiled with:
g++ -ggdb -fPIC -c network/sslclient.cpp -o network/sslclient.o

And linked to it's library with:
g++ -ggdb -ldl network/sslclient.o (some other objects) -fPIC -lsocket++ -shared -o ../libs/commands.so

---------- Post updated at 05:09 PM ---------- Previous update was at 04:04 PM ----------

Using valgrind without tool (--tool=none) I got a more specific error detail:

==20937==
==20937== Process terminating with default action of signal 11 (SIGSEGV)
==20937== Access not within mapped region at address 0x74736978
==20937== at 0x437A40E: (within /lib/libc-2.8.so)
==20937== by 0x437C73E: (within /lib/libc-2.8.so)
==20937== by 0x437E3EA: malloc (in /lib/libc-2.8.so)
==20937== by 0x42A96D8: operator new(unsigned int) (in /usr/lib/gcc/i686-pc-linux-gnu/4.1.2/libstdc++.so.6.0.8)
==20937== by 0x42A980C: operator new[](unsigned int) (in /usr/lib/gcc/i686-pc-linux-gnu/4.1.2/libstdc++.so.6.0.8)
==20937== by 0x4464C3A: sockbuf::sockbuf(int, sockbuf::type, int) (in /usr/lib/libsocket++.so.1.0.2)
==20937== by 0x4042199: network_control::invoke(char*) (network_control.cpp:58)
==20937== by 0x804E199: main (main.cpp:12)

It seems that when it creates an int (which would must be a copy of socket descriptor) it try to create the int in none process memory. I still can't find why.

Any help will be grateful.

---------- Post updated 08-11-09 at 06:26 AM ---------- Previous update was 08-10-09 at 05:09 PM ----------

Al warnings generated compiling with -Wall -Werror are corrected.

If more details are needed, that's how a sslclient is created and the method called:

main has an invoker_factory.
invoker_factory creates the invoker that will call the method.
the invoker calls to command_factory.
command_factory creates a command and returns it to invoker.
invoker calls the execute method from command and program segfaults.

Invoker and command are abstract classes. Subclasses are into a dynamic library (called invokers.so and commands.so respectively) and the objects instances are created by dlopen.

I tried giving more memory space at sockbuf objects and it didn't work (as I expected). I also tried it:

#include "network/sslclient.h"

int main() {
sslclient *s = new sslclient;
s->set_command("foo");
s->execute();
return 0;
};

And it works perfectly. And doing exactly the same into invokers code instead of main, it segfaults. Invokers and commands are created by a dynamic libs and that could be a possible cause. Any suggestions?

Thank you so much in advance.

---------- Post updated at 06:33 AM ---------- Previous update was at 06:26 AM ----------

That's the way that command_factory uses to create commands:

void *hndl = dlopen("../libs/commands.so", RTLD_NOW | RTLD_LOCAL | RTLD_LAZY);
if(hndl == NULL)
cout << "Library commands.so is missing." << endl;
command* (*create)() = (command* (*)())dlsym(hndl, method);
command * cmd = (command *)create();

And the same way is used by invoker_factory, but the library is ../libs/invokers.so.

Thank you again.