[Bug c++/68313] "using" shadows declaration

2021-08-05 Thread pinskia at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68313

Andrew Pinski  changed:

   What|Removed |Added

   Keywords||rejects-valid
  Known to fail||5.1.0, 5.5.0
 Status|UNCONFIRMED |RESOLVED
  Known to work||6.1.0, 7.1.0
   Target Milestone|--- |6.0
 Resolution|--- |FIXED

--- Comment #3 from Andrew Pinski  ---
Fixed in GCC 6+.

[Bug c++/68313] "using" shadows declaration

2015-11-12 Thread schaub.johannes at googlemail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68313

Johannes Schaub  changed:

   What|Removed |Added

 CC||schaub.johannes@googlemail.
   ||com

--- Comment #1 from Johannes Schaub  ---
If instead of namespaces you would have used a class, and class N1 would be a
baseclass of N2, your code would be ill-formed to the letter of the Standard:

"A non-template member function ([dcl.fct]) with a given name and type and a
member function template of the same name, which could be used to generate a
specialization of the same type, can both be declared in a class. When both
exist, a use of that name and type refers to the non-template member unless an
explicit template argument list is supplied."

What happens if you use unqualified names, i.e. if you declare the explicit
instantiation directly in namespace N2. And what happens if you use a "<>" to
try and explicitly refer to the template? Just as a question of interest.

[Bug c++/68313] "using" shadows declaration

2015-11-12 Thread wd11 at leicester dot ac.uk 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68313

wd11 at leicester dot ac.uk changed:

   What|Removed |Added

Version|unknown |5.1.0

--- Comment #2 from wd11 at leicester dot ac.uk ---
Johannes,

regarding the case with nested classes (in analogy to the second code snippet),
void f() and void f(X) don't have the same type (signature, or what is referred
to with 'type of a function' here), so the program would still be okay.

> What happens if you use unqualified names, i.e. if you declare the explicit
> instantiation directly in namespace N2?
I presume you refer to the first code snippet: same error

> And what happens if you use a "<>" to try and explicitly refer to the 
> template?
no error in either code snippet.