Re: [cc65] Optimizer bug found

From: Groepaz <>
Date: 2009-09-11 19:35:22
On Freitag 11 September 2009, Ullrich von Bassewitz wrote:
> Hi!
> On Thu, Sep 10, 2009 at 11:19:34PM +0200, Oliver Schmidt wrote:
> > After spending a "little" time I finally succeeded in isolating an
> > (maybe THE) optimizer bug causing Contiki to fail.
> Thanks a lot! I've fixed the problem, but had to change the guts of one of
> the optimizer routines, so this may have an impact on other stuff. Please
> check again.

i ran the testsuite again on 4150 with all combinations of optimizer settings:

- olivers testcase works in all cases now
- nothing else broke
- yacc.c works when optimizations are disabled. its still broken in all other 
cases :/ and most annoyingly: when i enable debug output in yacc.c, it still 
works in all cases, so tracking down the bug is kinda tedious =P

hrm. =P


When you take stuff from one writer, it's plagiarism; but when you take it 
from many writers, it's research. 
<Wilson Mizner>

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Received on Fri Sep 11 19:35:33 2009

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