Here is the snippet of the code:

----------------------------------------------------------------------------------------------------------
/*Helper methods*/
struct MemoryStruct {
    char *memory;
    size_t size;
    };

void *myrealloc(void *ptr, size_t size)
  {
    /* There might be a realloc() out there that doesn't like reallocing
       NULL pointers, so we take care of it here */
    if(ptr)
      return realloc(ptr, size);
    else
      return malloc(size);
  }

 
size_t WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
 {
   register int realsize = size * nmemb;
   struct MemoryStruct *mem = (struct MemoryStruct *)data;
   
   mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1);
   if (mem->memory) {
     memcpy(&(mem->memory[mem->size]), ptr, realsize);
     mem->size += realsize;
     mem->memory[mem->size] = 0;
   }
   return realsize;
 }

/*These are the curl calls just a snippet*/

  int error=0;
  CURL *curl_handle;
  struct MemoryStruct chunk;
  char *uri;
  uri = malloc(1000*sizeof(char));
  memset(uri, '\0',1000);
  sprintf(uri,"http:///whatever:8080/firstApp/servlet/requestupload?docId=");
  strcat(uri,Media_Id);
  userlog("URI IS:%s",uri);

  pLargeString.pLargeBinString=(void *)malloc(Msc_MaxStringSize+sizeof(long));
  pLargeString.len=Msc_MaxStringSize; /* Set Default length */
  /* lLen=Msc_MaxStringSize; Set default length */

  /********************CURL CALLS*********************/
   chunk.memory = NULL; /* we expect realloc(NULL, size) to work */
   chunk.size = 0; /* no data at this point */
   curl_global_init(CURL_GLOBAL_ALL);
   curl_handle = curl_easy_init();
   curl_easy_setopt(curl_handle, CURLOPT_HEADER, 0);
   /*curl_easy_setopt(curl_handle, CURLOPT_HEADERFUNCTION,writeHeaderBuf );*/
   curl_easy_setopt(curl_handle, CURLOPT_URL, uri);
   curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
   curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
   /*curl_easy_setopt(curl_handle, CURLOPT_USERAGENT, "libcurl-agent/1.0");
     curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1);*/
   curl_easy_perform(curl_handle);
   /*now copy this to our structure*/
   memcpy(pLargeString.pLargeBinString, chunk.memory, chunk.size);
   pLargeString.len = chunk.size;
   free(chunk.memory);
   curl_easy_cleanup(curl_handle);
  /*******************END OF CURL CALLS*************/

     return(&pLargeString);

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

On Tue, 2 Nov 2004 09:37:17 +0100 (CET), Daniel Stenberg
<daniel-curl_at_haxx.se> wrote:
> On Tue, 2 Nov 2004, Sachin Mahajan wrote:
>
> > Thanks for your example, I will try to do it right:). But I'm still getting
> > the similar core dump pointing to url.c, even after replacing the realloc by
> > myrealloc. Here is the core dbx stack trace:
>
> Tor Arntsen has been building and testing curl automatically on AIX since many
> months (see http://curl.haxx.se/auto/). There is nothing AIX-special in the
> libcurl code in that place that ought to fail.
>
> I consider it very unlikely that you see a libcurl bug, I consider it very
> likely that this is a problem caused by your app.
>
> Can you please post a full example source code (that is as small and simple as
> possible) that makes the problem occur?
>
> --
>
>
> Daniel Stenberg -- http://curl.haxx.se -- http://daniel.haxx.se
> Dedicated custom curl help for hire: http://haxx.se/curl.html
>
Received on 2004-11-02