Re: Warning 4786

From: williamkempf_at_[hidden]
Date: 2001-10-30 14:29:58

--- In boost_at_y..., dmoore_at_a... wrote:
> > Just curious if anyone else has 
> > any insight into how we can work around this.
> > 
> > Bill Kempf
> 
> 
> In an email exchange with P.J. Plaugher a couple of years back on 
his 
> Dinkumware distribution (the one used in MSVC 5 and 6), he told me 
> that many of his headers re-enable warnings at the bottom rather 
than 
> using a "push/pop" method for temporarily disabling things to suit 
a 
> particular header.
>
> The net effect is that at the bottom of <map> or <list>, there is a 
> hardwired #pragma warning (3:4786) which resets 4786's to level 3, 
no 
> matter what you try to do.

I don't believe you have the facts correct here.  My copy of <map>, 
for instance, which is the standard file distributed with MSVC++ 6 
has no such pragma.  It wouldn't make sense for it to have such a 
pragma, either, since <map> also never disables the warning to begin 
with.

> He considered this to be a bug, he fixed this in his standalone C++ 
> library distribution, but told me that Microsoft declined to fix 
this 
> in the version which ships with 6.0.
> 
> My personal workaround has been to do the following:
> 
> 
> #pragma warning(disable:4786)
> 
> #include <map>
> #include <string>
> // etc.
> 
> #pragma warning(disable:4786)

Again, this simply doesn't work in several cases in Boost.Threads.
 
Bill Kempf