The equivalent of the following code in header files for a popular
database vendor's API is rejected by at least 2 major C++ compilers,
and accepted by the latest versions of at least 3 major C++ compilers
(for one of which we have a healthy respect as far as compliance
with the draft standard).

typedef int foo;
class bar { foo foo; };

Is the use of 'foo' as a member variable name in this context legal or not?
If not, what is the applicable clause which prohibits it?

--
/*----------------------------------------------------------------------*/
/* Bob Kline                                       Stream International */
/* bob_kline@stream.com               formerly Corporate Software, Inc. */
/* voice: (703) 522-0820 x-311                      fax: (703) 522-5407 */
/*----------------------------------------------------------------------*/
---
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In article n79@lhc.nlm.nih.gov, bkline@cortex.nlm.nih.gov (Bob Kline) writes:
>
>typedef int foo;
>class bar { foo foo; };
>
>Is the use of 'foo' as a member variable name in this context legal or not?
>If not, what is the applicable clause which prohibits it?

Not valid. See 3.3.6 "Class Scope" [basic.scope.class]. It says in part,
"A name N used in a class S shall refer to the same declaration when
re-evaluated in its context and in the completed scope of S."

By the end of class bar (the "completed scope"), "foo" would be the name of
a data member. In the same scope, it cannot also be a type name, which it
would be up to the declaration of member foo.

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




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