LuaJIT optimization bug?
[
Date Prev][
Date Next][
Thread Prev][
Thread Next]
[
Date Index]
[
Thread Index]
- Subject: LuaJIT optimization bug?
- From: Pierre Chapuis <catwell@...>
- Date: 2011年8月16日 17:50:01 +0200
Apparently, I might have found another LuaJIT bug.
I am using git head on OS X 64 bits.
I have code that is supposed to produce deterministic output
and a tool that checks this output. This code involves use of
the FFI among other things.
I have found that the behavior of this code changes depending
on whether or not I add useless instructions in the middle of
it when I use "-O3". For instance, if I add this somewhere in
the middle of a loop:
unpack({})
I get the correct output, but not if I comment it...
I also get the correct output if I use "-O3 -O-fwd".
This bug happens in a rather large program which I cannot publish
and I have not been able to make a snippet that reproduces it.
Is there anything else I can do to help debug this?
--
Pierre 'catwell' Chapuis