Download Microsoft C/C++ compiler for use with Python 2.6/2.7 ASAP

[Tim Roberts]

Dave Angel <davea at ieee.org> wrote:

>Tim Roberts wrote:
>>
>> No.  The multi-thread-aware CRT in Visual C++ (which is the only option
>> since VS2008) puts errno in thread-local storage, so it's shared by all
>> CRTs.
>>   
>I didn't know specifically that errno is in TLS, but I will disagree 
>with the conclusion that a TLS entry is implicitly shared by all CRT's.  
>Unless the CRT for each DLL explicitly does some extra work to allow 
>sharing, each will have its own set of TLS variables.

Yes, I should have thought about this before posting.  I checked the CRT
source code, and you are correct.  Every DLL that calls the C run-time
startup code will do its own TlsAlloc.
-- 
Tim Roberts, timr at probo.com
Providenza & Boekelheide, Inc.