https://www.freepascal.org/docs-html/rtl/system/inc.html
- says it operates on pointers
- also gives examples for unsigned types such as word
But can it be used to increment a QWORD?
Inc(FAddress, (Opcode div FOwner.FLineInfo.LineRange) *
FOwner.FLineInfo.MinimumInstructionLength);
FAddress: QWord = $FFFFFFFF02B60000
All values in the expression are of type Byte. Though the question to
ask may be what the result is cast too....
I know the result of the expression is 0 (zero).
From the assembler I can see that I passed the div and the multiplication.
And then I got
0000000100CBEC93 48B8FFFFFFFFFFFFFF7F mov rax,$7FFFFFFFFFFFFFFF
0000000100CBEC9D 4839C2 cmp rdx,rax
0000000100CBECA0 7605 jbe +$05 #
$0000000100CBECA7 NEXTLINE+1815 fpdbgdwarfdataclasses.pas:4556
0000000100CBECA2 E8998535FF call -$00CA7A67 #
$0000000100017240 $fpc_rangeerror system.inc:801
which calls range check.
For all I can tell it checks the value of FAddress.
But why does it check it against High(Int64) ?
It is a QWord.
FPC 3.2.3 from Dec 2023
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