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RE: [avr-gcc-list] Is this a Bug??????

From: Ed Maste
Subject: RE: [avr-gcc-list] Is this a Bug??????
Date: Wed, 31 Jul 2002 09:44:21 -0400

> Well then I figured out a work around.  I declared
> timer_flag as volatile, and BOB's your uncle, it
> works.

That's not a workaround.  That's what you have to
do to tell the compiler that the value of the
timer_flag might be changed by some mechanism other
than the function it's compiling (e.g. in an ISR).

You might be interested in the -fvolatile-global 
gcc flag, although I haven't actually tried it.

(for information on that flag, see

avr-gcc-list at http://avr1.org

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