[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[kstutsman at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11858

--- Comment #4 from Kurt Stutsman <kstutsman at gmail dot com> 2012-10-10 19:39:12 UTC ---
Still seeing this as of version 4.6.1.

[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11858

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2005-09-10 19:09:16         |2012-10-10

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-10-10 20:30:13 UTC ---
and 4.8

[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2005-12-18 20:14 -------
This looks like a case where array decays to a pointer too early problem (PR
24666).


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |24666
              nThis|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11858

[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[dhazeghi at yahoo dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11858


dhazeghi at yahoo dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |---

[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11858



------- Additional Comments From bangerth at dealii dot org  2003-08-09 15:52 -------
I'm not where exactly is the bug here: T::x doesn't exist if T=int, so this is a substitution 
failure. This is not an error, the function is simply not available for name lookup. If this 
were the correct interpretation, then we should get an error that there is no suitable 
function T::f in the sizeof expression. But there's a bug anyway. 
 
By the way, this is rejected: 
--------------------------------------------- 
template <int> struct X {}; 
template <typename T> struct S { static typename T::x f (); }; 
template <class T> int f (X<sizeof(T::f())> *); 
int const i = f<S<int> >(0); 
---------------------------------------------- 
 
So it has something to do with the fact that gcc simply ignores the size expression if 
an argument to a function is an array. 
 
W,

[Bug c++/11858] Name lookup error ignored when instantiated from expression within sizeof() in template function parameter

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11858


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |accepts-invalid
   Last reconfirmed|0000-00-00 00:00:00         |2003-08-08 22:28:16
               date|                            |


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-08-08 22:28 -------
I can confirm this on the mainline (20030808).
Maybe related to bug 11814.