[avr-libc-dev] [bugs #4101] setjmp/longjmp destroy changes in global registers

[Eric Weddington]

This mail is an automated notification from the bugs tracker
 of the project: AVR C Runtime Library.

/**************************************************************************/
[bugs #4101] Latest Modifications:

Changes by: 
                Eric Weddington <address@hidden>
'Date: 
                Fri 01/07/2005 at 19:08 (America/Denver)

------------------ Additional Follow-up Comments ----------------------------
Is there a simple test case for this? Or, better still, is there a patch that 
fixes the problem?

We'd really like to get this one fixed....






/**************************************************************************/
[bugs #4101] Full Item Snapshot:

URL: <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=4101>
Project: AVR C Runtime Library
Submitted by: 0
On: Wed 06/25/2003 at 20:57

Category:  Library
Severity:  7 - Major
Priority:  7 - High
Item Group:  None
Resolution:  None
Privacy:  Public
Percent Complete:  0%
Assigned to:  None
Originator Email:  address@hidden
Status:  Open


Summary:  setjmp/longjmp destroy changes in global registers

Original Submission:     A prologue/epilogue of function, in which there is a 
call setjmp(), contains preservation/restoration of all call-saved registers. 
Exception make function main() and global register variables.
   Nevertheless, setjmp/longjmp too keeps/restores registers r2-r17.
Restoration of local variables after operation longjmp(), certainly is 
pleasant, but it is no necessary. But loss of changes in global registers,
in my opinion, is inadmissible.

   avr-gcc (GCC) 3.3.1 20030519 (prerelease)
   avr-libc-20030422cvs


Follow-up Comments
------------------


-------------------------------------------------------
Date: Fri 01/07/2005 at 19:08       By: Eric Weddington <arcanum>
Is there a simple test case for this? Or, better still, is there a patch that 
fixes the problem?

We'd really like to get this one fixed....












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