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Re: [avr-gcc-list] Don't use gcc 3.4.4, use 4.0.1


From: E. Weddington
Subject: Re: [avr-gcc-list] Don't use gcc 3.4.4, use 4.0.1
Date: Thu, 28 Jul 2005 17:58:45 -0600
User-agent: Mozilla Thunderbird 1.0.2 (Windows/20050317)

Andy Warner wrote:

E. Weddington wrote:
[...]
I'd like some other issues in GCC 4.x to be cleaned up for the AVR port before including it in WinAVR, especially DWARF2 issues. Here is a list of known AVR GCC bugs:
<http://rtems.org/phpwiki/index.php/GCCAVRBugs>

As a Linux-hosted user, is 4.0.1 stable enough for me to spend
some time getting to know it ? I'm running 3.4.3 right now, and
am very happy with it - but smaller/faster code is always welcome.
I'm cool building it all from source.

Personally I would still hesitate to use it in any type of production environment because of these two GCC bugs:
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21990>
<http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21107>

Bug #21990 is a "wrong code" type bug and was submitted by Björn Haase. He stated in the beginning: "I have observed a wrong code bug that I judge to be so serious that IMHO one should discourage use of the avr port for 4.x.x until it is resolved."

Bug #21107 is an "ICE on valid" bug submitted by Martin Kögler and is a regression for 4.0/4.1.

Neither of these two bugs have been fixed yet.

IMHO. YMMV.

Eric Weddington




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