Subj : Re: JS_THREADSAFE makes jsshell.exe fail  - Reference Error
To   : tim_clancy
From : Brendan Eich
Date : Mon May 02 2005 11:15 am

Timothy Clancy wrote:
> I've compiled SpiderMonkey - the latest stable release with 
> JS_THREADSAFE defined.  I've downloaded the NSPR library (4.4.1.0) for 
> my compiler (MSVC 2002).  I've also compiled the shell for testing again 
> with JS_THREADSAFE defined.  All files are in the same folder (js32.dll, 
> libnspr4.dll, jsshell.exe, perfect.js).
> 
> When I run the 'jsshell.exe perfect.js' from the command line I get the 
> following output.
> 
> ---
> 
>  > jsshell perfect.js                A number is 'perfect' if it is 
> equal to the sum of its divisors (excluding itself).
> 
> perfect.js:16: ReferenceError: n is not defined


Sounds like you are running into the notorious MSVC "identical COMDAT 
folding" bug.  See the release notes, the big red box and text at the 
top: http://www.mozilla.org/js/spidermonkey/release-notes/.

/be

.