I believe the following is legal, but my compiler (MSVC 5.0) complains
of an ambiguous call to overloaded function foo.

namespace Name1 {void foo();}
namespace Name2 {using namespace Name1; using namespace Name1;}

void bar()
{
    Name2::foo();
}

I also get the error with the following:

namespace Name1 {void foo();}
namespace Name2 {using namespace Name1; }
namespace Name2 {using namespace Name1; }

void bar()
{
    Name2::foo();
}

So are these code fragments legal or illegal?  I'm thinking the
compiler is broken with respect to repeated using-directives inside
namespaces, since the following compiles fine:

namespace Name1 {void foo();}
namespace Name2 {using namespace Name1; }

void bar()
{
    Name2::foo();
}

and so does the following:

namespace Name1 {void foo();}
using namespace Name1;
using namespace Name1;

void bar()
{
    foo();
}

Thanks,
Russ


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In article 40630465@news.io.com, russw@io.com (Russ Williams) writes:
>
>I believe the following is legal, but my compiler (MSVC 5.0) complains
>of an ambiguous call to overloaded function foo.
>
>namespace Name1 {void foo();}
>namespace Name2 {using namespace Name1; using namespace Name1;}
>
>void bar()
>{
>    Name2::foo();
>}

Yes, using-directives do not add any names to the declarative regions
in which they appear, and so they are idempotent. It looks like the
compiler does not treat them properly.

---
Steve Clamage, stephen.clamage@sun.com




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