May 2014 - Gpc

Global variables - register allocated
by Rajat Singh 21 May '14

21 May '14

Hi, I am declaring the global variable outside a procedure. I want to know the register that is used by this global variable. VAR VAR1:INTEGER; attribute(name='VAR1'); When I tried to disassemble the object file, the global variables seems to be residing in the memory instead of a register. 80000130: 7005 moveq #5,%d0 80000132: 23c0 8000 21ec movel %d0,800021ec <VAR1> Can you please let me know how to identify the register which is used by this variable. Thanks, Rajat

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Heap error 203
by Contestcen＠aol.com 15 May '14

15 May '14

You can ignore my previous question about Heap Error 203. I have discovered the variable ReturnNilIfGrowHeapFails which controls the behavior of New. It is not mentioned in the RTL manual, but it is mentioned in the Programmer's Guide. I had not read far enough in Chapter 8, which at first reading seemed to be entirely concerned with the sizes of the various data types. The description of New in the RTL manual simply states that New returns nil if space is not available. It does not say that this feature defaults to off, and has to be turned on by the program. Frank

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Error 203 Heap is out of memory
by Contestcen＠aol.com 14 May '14

14 May '14

Is there any way to prevent an Error 203 when I call New and the heap is out of storage? The RTL manual says that New should return a nil pointer, but that doesn't seem to happen. Instead, my program terminates with a 203 error code. This happens with both {$S+} and {$S-} directives. I am running DOS under Windows 7. Frank

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