Hello,
There is an application that allows user-written plugins.
There are 2 plugins, let's call them PlugLua (mine) and PlugPascal
(somebody's).
Plugins written in Pascal modify FPU control word allowing FP exceptions.
Lua plugins don't like it but I managed to solve it by calling
_control87(_MCW_EM,_MCW_EM) in a few key points.
However recently I got a bug report about crash on calling math.log10(0)
in PlugLua.
* exception does not occur if PlugPascal is not present
* _control87(_MCW_EM,_MCW_EM) does not help in this case
* executing division by zero does not trigger exception
* there is no exception on 32 bit platform, it occurs only on x64
* exception occurs if PlugLua uses LuaJIT 2.0.5, it does not occur with
LuaJIT 2.1 beta 3 or Lua 5.1
I'm going to change to LuaJIT 2.1 beta 3 but could somebody explain what
happens? (My knowledge is far from being able to understand that).
Thanks.
--
Shmuel
