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Re: For some class F, I can declare a variable of type F::F, or F::F::F, etc.
- From: David Fang <fang at csl dot cornell dot edu>
- To: Weiqi Gao <weiqigao at speakeasy dot net>
- Cc: gcc at gcc dot gnu dot org
- Date: Sun, 12 Oct 2008 13:49:50 -0400 (EDT)
- Subject: Re: For some class F, I can declare a variable of type F::F, or F::F::F, etc.
- References: <48F20122.6060603@speakeasy.net>
We come across what seems to be a bug in gcc. If a class F has a public zero
argument constructor, then we can declare a variable of type F::F, F::F::F,
etc. For example, the following source file:
// foo.cpp
class F {};
F::F::F::F::F f;
See: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11764
Still accepts-invalid with g++-4.3.2.
compiles with out errors in g++. The result is as if f is declared with
F f;
This is the case with the stock/latest GCC in Debian GNU/Linux x86_64
(v.4.1.2) and in Cygwin (v.3.4.4).
Is this the intended behavior?
No. :)
Fang
David Fang
Computer Systems Laboratory
Electrical & Computer Engineering
Cornell University
http://www.csl.cornell.edu/~fang/
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