On 19/02/2014, at 9:30 AM, Tony Bybell wrote:
>
> Fedora 20 is still broken. Paul had me look at crashes in gtkwave yesterday
> and I tracked it down to occurring only when Judy is compiled with gcc-4.8.2
> when optimization is enabled.
>
> For me, that code didn't crash--instead the contents of the Judy1 tree were
> corrupted and would cause other code to crash later.
I'm sorry I should have noted this on the list. You have to put
-fno-strict-aliasing
-fno-aggressive-loop-optimizations
with gcc 4.8 or stuff crashes. Unfortunately due to bloodymindedness
of the gcc developers this also disables other unrelated loop optimisations
that worked fine with gcc-4.7. I had to patch my system with a special
gcc-4.8 case because of these issues. I'm not 100% sure about the
strict aliasing (I had to add that to my system previously). The aggressive
loop optimizations definitely break Judy. It regularly exceeds defined
array bounds.
--
john skaller
[email protected]
http://felix-lang.org
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