[toolbox-l] Application failure

[<na...@uk...>]

Hi,
The following program (I am told) runs fine on Solaris and Linux.
If compiled with IBM VisualAge for C++ v5 is works too on AIX 4.3.3!

But with GNU gcc/g++/C++ it fails to complete most of the time.
It uses pthreads and lots of C++ new/malloc calls.

My customer regards this as a major weakness in AIX because they are
heavily commited to GNU C++
for their core application and this bug will stop them buying IBM pSeries
machines.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#include <pthread.h>
#include <stdio.h>
#include <strings.h>
#include <unistd.h>

#define MAX_THREADS 100
#define ITERATIONS 3
#define SLEEPTIME 3

void *ThreadFunction(void *In)
{
     int i, j;
     int val =(int) (int*) (In);
     for (i = 0; i < ITERATIONS; i ++)
     {
          char *hello = NULL;
          for (j = 1; j <= 1000; j ++) {
               char *newhello = new char[j + 1];
               if (hello)
               {
                    strcpy(newhello, hello);
                    delete [ ] hello;
               }
               else
                    newhello[0] = 0;
               char *newa = new char[2];
               strcpy(newa, "A");
               strcat(newhello, newa);
               delete [ ] newa;
               hello = newhello;
          }
          //printf("%s - %d\n", hello, val);
          if (hello)
               delete [ ] hello;

          sleep(SLEEPTIME);
     }
     printf("%d\n", val);
     return In;
}

 main()
{
     int i;
     int ret;
     pthread_t hThread[100];
     pthread_attr_t attr;
     pthread_attr_init (&attr);
     pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);

     printf("Starting\n");
     for (i = 0; i < MAX_THREADS; i ++) {
          ret = pthread_create(&hThread[i], &attr, ThreadFunction,
(void*)i);
          if (ret != 0) {
               printf("Could not create main thread : UNIX error %d\n",
ret);
               return (-1);
          }
     }

     for (i = 0; i < MAX_THREADS; i ++)
     {
          pthread_join(hThread[i], NULL);
     }

return 1;
}
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
The idebug debugger tells it crashes in pthread_mutexinit and a source code
 file called new2.cc - Eh!!

thanks Nigel Griffiths

IBM Technical Support (RS/6000) UK - e-mail: na...@uk...
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