[xml] Action of realloc

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From: JohnnyXia@acersoftech.com.cn
Date: Tue Dec 05 2000 - 02:38:54 EST

Hi all,

I think it is a bug of libxml, at least on the windows platform.
This is about the actions of realloc,if realloc fails, would it
free the old memory block? If so, then codes like the following
are right:

char* fun( char* pOld )
{
     pOld = realloc( pOld, newsize );
     if( pOld == NULL )
          return NULL;
     ...
}

If not, then the above codes will cause memory leak when realloc fails.

On windows platform, unfortunately, realloc won't free the old memory
block,
if it fails to alloc a new block.

In libxml, it seems that it assumes realloc would free the old memory block
when realloc fails.

Johnny Xia. 

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