Hi, 

I am running a C++ program with OMPI.

I got error: 

*** glibc detected *** /nsga2b: free(): invalid next size (fast): 0x0000000001817a90 ***

I used GDB: 

======= Backtrace: =========

Program received signal SIGABRT, Aborted.

0x00000038b8830265 in raise () from /lib64/libc.so.6

(gdb) bt

#0  0x00000038b8830265 in raise () from /lib64/libc.so.6

#1  0x00000038b8831d10 in abort () from /lib64/libc.so.6

#2  0x00000038b886a99b in __libc_message () from /lib64/libc.so.6

#3  0x00000038b887245f in _int_free () from /lib64/libc.so.6

#4  0x00000038b88728bb in free () from /lib64/libc.so.6

#5  0x000000000044a4e3 in workerRunTask (message_to_master_type=0x38c06efe18, 

    nodeSize=2, myRank=1, xVSize=84, objSize=7, 

    xdata_to_workers_type=0x1206350, 

    recvXDataVec=std::vector of length 0, capacity 84, myNsga2=..., 

    Mpara_to_workers_type=0x1205390, events=0x7fffffffb1f0, netplan=...)

    at src/nsga2/workerRunTask.cpp:447

#6  0x00000000004514d9 in main (argc=1, argv=0x7fffffffcb48)

    at src/nsga2/main-parallel2.cpp:425

-------------------------------------------------

In valgrind, 

there are some invalid read and write butno errors about this 

 free(): invalid next size .

-----------------------------------------------

(populp.ind)->xreal = new double[nreal];

(populp.ind)->obj = new double[nobj];

(populp.ind)->constr = new double[ncon];

(populp.ind)->xbin = new double[nbin];

if ((populp.ind)->xreal == NULL || (populp.ind)->obj == NULL || (populp.ind)->constr == NULL || (populp.ind)->xbin == NULL )

{

#ifdef DEBUG_workerRunTask

cout << "In workerRunTask(), I am rank "<< myRank << " (populp.ind)->xreal or (populp.ind)->obj or (populp.ind)->constr or (populp.ind)->xbin is NULL .\n\n" << endl;  

#endif

}

delete [] (populp.ind)->xreal ;

delete [] (populp.ind)->xbin ;

delete [] (populp.ind)->obj ;

delete [] (populp.ind)->constr ;

delete [] sendResultArrayPr;

----------------------------------------

thanks

Any help is really appreciated.