procedure Dispose(var P: Pointer);
Releases the memory allocated for a dynamic variable.
Dispose releases the memory allocated for a pointer variable allocated using System.New. For a pointer that was allocated using System.GetMem, use System.FreeMem to release the memory allocated. After a call to Dispose or FreeMem, the value of the pointer passed to it is undefined.
Note: If a pointer to unallocated memory is passed to Dispose, the behavior of the application largely depends on the target platform, as follows:
- For Windows platforms, an EInvalidPointer is raised in applications using System.SysUtils, and a run-time error is produced for applications that do not use System.SysUtils. (FastMM, the default memory manager, can detect an invalid pointer.)
- For Mac OS X and iOS platforms, Dispose does not raise an EInvalidPointer exception if an invalid pointer is passed to Dispose.