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From: "gandalf at winds dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/49487] Internal compiler error in AVR code
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49487

--- Comment #3 from gandalf at winds dot org 2011-06-21 17:17:20 UTC ---
(In reply to comment #1)
> (In reply to comment #0)
> > Compiling the following function triggers an internal compiler error in (at
> > least) GCC versions 4.2, 4.3, 4.5 and the latest 4.7.0-20110620:
> 
> Could you be a bit more specific on the version numbers for 4.2, 4.3, and 4.5?
> 
> I've just tried building on 4.3.3 (WinAVR 20100110) and it compiled
> successfully for -O[0123s].
> 
> <snip> 
> > This was compiled using a cross-compiler on an x86_64 system as outlined below:
> 
> Could you try using a 32-bit host?

Sorry about being vague on the previous GCC versions--I didn't think it
mattered that much. I very well could have been using patches from Atmel back
then (it was a while ago). I cannot reproduce the problem today on vanilla GCC
4.3.5 and 4.4.6.

However I am able to reproduce the problem on 4.5.3 right now too (on a 64-bit
host).