Re: STL in global or std namespace?

["Matthew Brown" <mbrown at mediadb dot net>]

>On Wed, 24 Nov 1999, John Law wrote:

 

[... snip ...]

 

>gcc contains a hack that ignores the std:: namespace; anything in
>  the std namespace is also simultaneously in the global namespace.
>  E.g. , gcc is happy to accept 'using std::vector;' but you can still use
>  vector whether or not you have an appropriate using decl.

>

>IIRC, the hack is entirely in gcc, and libstdc++ hasn't got anything to
>  say about it.

>

>If you want namespace std to be honored, compile with -fhonor-std ... but
>  since namespaces get mangled into signatures, I bet you will need to
>  re-compile libstdc++ with -fhonor-std.

>

>However, I can't recall having used -fhonor-std recently ... anyone else
>  used it?

 

I am using libstdc++ 2.90.6 and gcc 2.95.1.

 

I have used '-fhonor-std' successfully when I ran into a similar problem -- only this was with a structure declared in one of the Solaris system headers that conflicted with std::map. This caused a real headache until I rebuilt libstdc++ with '-fhonor-std' -- so far, so good.

Incidentally, I also am using the new '-fsquangle' flag with success in shortening the symbols of the templates; it does cause all debuggers that I have used so far to not recognize the mangling of symbols for which the new algorithm is used, but I find the 'squangled' names to be sufficiently readable.

 

-- Matthew Brown

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