The new FIXED modifier and BEGIN FIXED .. END FIXED keywords allow you to tell the .Net runtime that you do not want a variable to be moved by the Garbage collector.
UNSAFE FUNCTION Start AS VOID
VAR s := "SDRS"
BEGIN FIXED LOCAL p := s AS CHAR PTR
VAR i := 0
WHILE p[i] != 0
p[i++]++
END
END FIXED
Console.WriteLine(s)
Console.Read()
RETURN
As you can see the BEGIN FIXED statement requires a local variable declaration. The contents of this local (in the example above a CHAR PTR) will be excluded from garbage collection inside the block.
Please note:
The FIXED keyword and the example above should be used with extreme care. Strings in .Net are immutable. You normally should not manipulate strings this way !
