On 26/12/17 12:45, Giuliano Colla wrote:
/In short the BASED construct makes the C-style dereferencing operator
unnecessary, by moving dereferencing from code to declaration.
In fpc this translates into code looking like this, in this trivial example:
var
I: BYTE;
I1: INTEGER;
ItemPtr: Pointer;
Item: BYTE BASED ItemPtr;
IntegerItem: INTEGER BASED ItemPtr;
....
ItemPtr := @I;
Item := $41;
....
ItemPtr := @I1;
IntegerItem := -32767;
This code will load the BYTE value $41 into the variable I, and the
INTEGER value -32767 into the variable I1.
What does gdb (and possibly other debuggers) make of this? Is it really
appropriate to declare Item as a variable, when it's really more akin to
a macro?
--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk
[Opinions above are the author's, not those of his employers or colleagues]
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