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RE: [avr-gcc-list] Endless loop: uchar c; for (c=1; c; c++)
From: |
Eric Weddington |
Subject: |
RE: [avr-gcc-list] Endless loop: uchar c; for (c=1; c; c++) |
Date: |
Tue, 06 Mar 2007 22:12:54 -0700 |
> -----Original Message-----
> From:
> address@hidden
> [mailto:address@hidden
> org] On Behalf Of Dmitry K.
> Sent: Tuesday, March 06, 2007 9:12 PM
> To: address@hidden
> Subject: Re: [avr-gcc-list] Endless loop: uchar c; for (c=1; c; c++)
>
> On Wednesday 07 March 2007 13:18, Eric Weddington wrote:
> [...]
> > Going back to your original code, see the resulting attached files:
> > bug.lst - The assembler listing after compiling and assembling
> > bug.dis - The disassembled output from avr-objdump -d bug.o
> >
> > These files are generated with avr-gcc 4.1.1 and using -Os.
> >
> > I still don't see a bug where it goes into an infinite
> loop. To me it looks
> > like that it will eventually break out of the outer loop.
> >
> > Eric
>
> Yes, I do not see an error in yours code.
> But there is a bit of differences:
> - main() is started with pushing r16,17,28,29 into stack
> - stack pointer is not loaded to SP ports, it is modifyed
> All of this is absent in my disassembler result.
>
> Are you use non-pure avr-gcc 4.1.1 ?
I'm using the avr-gcc with the mega256x patch that also changes main() to a
normal function IIRC.
Eric
Re: [avr-gcc-list] Endless loop: uchar c; for (c=1; c; c++), Shaun Jackman, 2007/03/07