executing pcall results into devision by zero

[Marten Feldtmann <itlists@...>]

I'm working on  a wrapper for LUA for VASmalltalk and I downloaded a 
version of Lua (which needs the VS2005 runtime) - I think, it was the 
Windows distribution. (I'm working under Vista)

First I noticed, that I was not able to call the lua5.1.dll, because it 
was said, that I call the c runtime in an incorrect way - after changing 
the manifest of my executable I was allowed to call the library. That is 
not very convenient.

But that's another story.

My main problem in understanding: When I executed with "loadstring" and 
"pcall" the program "a = 2 / 0" I got an division by zero exception - 
shouldn't pcall catch all errors ???

Then I build my own lua5.1.dll using Watcom 1.7a (I needed not only the 
cdecl calling conventions functions, but also stdcall calling-convention 
functions) and now pcall works as (I) expected and in "a" is something 
stored like "1.#inf".

What is the behaviour of pcall in this aspect ?

Any idea ?