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Re: [avr-gcc-list] Got strange compilation problem

From: Bjarne Laursen
Subject: Re: [avr-gcc-list] Got strange compilation problem
Date: Thu, 16 Feb 2006 10:41:33 +0100
User-agent: Mozilla Thunderbird 0.7.3 (Windows/20040803)

David Bourgeois wrote:

uint8_t fifoLength(fifo_t *p)
    uint8_t length;

    length = (p->inIdx) - (p->outIdx);
    length %= FIFO_SIZE;
      return length;

You are casting the result of the subtraction to uint8_t before doing the modulos. If you write it in one statement it will be the same as the operants or at least int.
This could be the difference.

-Bjarne Laursen, RoseTechnology A/S

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