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Re: [PATCH][C++] Fix PR29433, make C++ use a lot less time/memory

Gabriel Dos Reis wrote:
On Sat, 9 Dec 2006, Mark Mitchell wrote:

| Gabriel Dos Reis wrote:
| > |   struct T {};
| > |   struct S {
| > |     T T();
| > |   };
| > |
| > | name lookup for the T appearing as a type-specifier would still find the
| > | outer T, and that therefore the binding to the member function T does
| > | not affect validity.
| >
| > I don't follow that reasoning.
| The standard says that its an error if name lookup would find a
| different binding after the class is complete.


|  But, it wouldn't: it
| would still find the global T, since type-specifiers are looked up
| specially.

I believe that special rule applies only if we used "struct" in front of
the first "T", e.g.

   struct T { };
   struct S {
      struct T T();

is valid.

It also applies before ::, but that also doesn't apply to this case. When we see the first T in "T T();" we have no idea that it's supposed to be a type-specifier, so we can't look it up specially.


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