[sdcc-devel] [ sdcc-Bugs-1584216 ] Incorrect test

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Bugs item #1584216, was opened at 2006-10-25 09:50
Message generated for change (Comment added) made by frief
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Category: msc51(8051) target
Group: None
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Rafał (rafal_b)
Assigned to: Nobody/Anonymous (nobody)
Summary: Incorrect test

Initial Comment:
if (ir_pos != serial_pos)
is translared to
mov a,_ir_pos
jz 
I just come back to assembler.

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>Comment By: Frieder Ferlemann (frief)
Date: 2006-10-27 10:21

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thanks for reporting back:)

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Comment By: Rafał (rafal_b)
Date: 2006-10-26 22:16

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Volatile is fixing problem.

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Comment By: Frieder Ferlemann (frief)
Date: 2006-10-25 10:08

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you most likely forgot to use the keyword "volatile" for the
variable 
serial_pos? And serial_pos is probably changed within an IRQ
routine?

If not declared as volatile SDCC is correct to assume that
serial_pos never deviates from its startup value (zero).

I set this report to pending, please respond (with compiler
version etc) 
to this report if using volatile does not fix your problem.

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