[WinAVR-users] [ winavr-Bugs-1561330 ] problem with switch case

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Bugs item #1561330, was opened at 2006-09-19 12:09
Message generated for change (Comment added) made by carcrosser
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: carcrosser (carcrosser)
Assigned to: Nobody/Anonymous (nobody)
Summary: problem with switch case

Initial Comment:
If I make a larger select case statement, the ATMEGA8
dies (haven't tried with other uC's)
this happens after more than 7 cases.
the microcontroller just halts all processes.

I triple checked the case contents. If I empty the case
contents, the thing starts working again??? I leave the
cases, but only disable the content.

I know the content is correct, bcause it's copied from
other cases which worked perfectly:

little example:

switch (counter)
{
	case 0:
		PORTB = 1;
		PORTD = PORTD & 239;
		break;
		
	case 5:
		PORTB = 38;
		PORTD = PORTD & 239;
		break;	
	
	case 10:
		PORTB = 8;
		PORTD = PORTD & 239;
		break;	

	case 15:
		PORTB = 52;
		PORTD = PORTD & 239;
		break;
	
	case 20:
		PORTB = 192;
		PORTD = PORTD & 239;
		break;

	case 25:
		PORTB = 36;
		PORTD = PORTD | 16;
		break;
		
	case 30:
	    counter = -1;
		break;
		
}

ABOVE CODE WORKS!!

switch (counter)
{
	case 0:
		PORTB = 1;
		PORTD = PORTD & 239;
		break;
		
	case 5:
		PORTB = 38;
		PORTD = PORTD & 239;
		break;	
					
	case 10:
		PORTB = 8;
		PORTD = PORTD & 239;
		break;	

	case 15:
		PORTB = 52;
		PORTD = PORTD & 239;
		break;
	
	case 20:
		PORTB = 192;
		PORTD = PORTD & 239;
		break;

	case 25:
		PORTB = 36;
		PORTD = PORTD | 16;
		break;
					
	case 30:
		PORTB = 192;
		PORTD = PORTD & 239;
		break;
					
	case 35:
	    counter = -1;
		break;
	
}
THIS CODE HALTS THE uC AFTER FEW CASES

(yes, it's just a simple freaky shiftlight)

if i make the content of case 30 comment with // it
works again ?

If I rewrite the code to iff statments everything works
as well

----------------------------------------------------------------------

>Comment By: carcrosser (carcrosser)
Date: 2006-09-19 17:01

Message:
Logged In: YES 
user_id=1601482

AVR-AS:
2.16.1 + coff-avr-patch (20050630)

AVR-GCC: 3.4.6

----------------------------------------------------------------------

Comment By: Nobody/Anonymous (nobody)
Date: 2006-09-19 16:37

Message:
Logged In: NO 

What are the versions of GNU Binutils, and GCC that you are
using that causes this failure?

To get the versions, go to a command line and do:

avr-as --version

avr-gcc --version

----------------------------------------------------------------------

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https://sourceforge.net/tracker/?func=detail&atid=520074&aid=1561330&group_id=68108