[avr-gcc-list] avr-gcc 4.5.3 in Debian/Ubuntu has call-prologues bug

[Dale Whitfield]

Hi,

A warning that this version has the bug as described and fixed by Georg
below. The fix was targeted for 4.6.2

[avr]: call-prologues saving/restoring global register variables
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50289

avr-gcc 4.5.3 is in:
Debian: wheezy(testing) and sid(unstable)
Ubuntu: oneiric(current release) and precise(next release)

Compiling without -mcall-prologues appears to be fine.

I had no problems with 4.3.5 and since this bug can result in erratic
behaviour (R7 global register is saved/restored by prolog/epilog when it
shouldn't be), I was wondering whether there are any thoughts on the
best action.

Either backport the fix to 4.5.x or move ahead to 4.6.x. Opinions?

-- 

Regards

Dale