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* [Bug c++/17045] New: conflict between function template and class with same name
@ 2004-08-16 3:08 gccbugs at contacts dot eelis dot net
2004-08-16 3:40 ` [Bug c++/17045] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: gccbugs at contacts dot eelis dot net @ 2004-08-16 3:08 UTC (permalink / raw)
To: gcc-bugs
The following code is rejected by GCC 3.4.1 :
template <typename T> void f (T) {}
template <typename T> void g () { f(T()); }
namespace N
{
struct f {};
}
void h () { g<N::f>(); }
Error:
t.cpp: In function `void g() [with T = N::f]':
t.cpp:10: instantiated from here
t.cpp:7: error: `struct N::f' is not a function,
t.cpp:1: error: conflict with `template<class T> void f(T)'
t.cpp:3: error: in call to `f'
Comeau 4.3.3 accepts the code.
--
Summary: conflict between function template and class with same
name
Product: gcc
Version: 3.4.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: gccbugs at contacts dot eelis dot net
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17045
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/17045] conflict between function template and class with same name
2004-08-16 3:08 [Bug c++/17045] New: conflict between function template and class with same name gccbugs at contacts dot eelis dot net
@ 2004-08-16 3:40 ` pinskia at gcc dot gnu dot org
2004-08-16 4:12 ` gccbugs at contacts dot eelis dot net
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-08-16 3:40 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-16 03:40 -------
Confirmed, what is happening is that GCC is deciding too early that T() will be a function call.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |rejects-valid
Known to fail| |2.95.3 3.0.4 3.2.3 3.3.3
| |3.4.0 3.5.0
Last reconfirmed|0000-00-00 00:00:00 |2004-08-16 03:40:54
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17045
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/17045] conflict between function template and class with same name
2004-08-16 3:08 [Bug c++/17045] New: conflict between function template and class with same name gccbugs at contacts dot eelis dot net
2004-08-16 3:40 ` [Bug c++/17045] " pinskia at gcc dot gnu dot org
@ 2004-08-16 4:12 ` gccbugs at contacts dot eelis dot net
2004-08-16 14:53 ` bangerth at dealii dot org
2004-12-21 13:15 ` redi at gcc dot gnu dot org
3 siblings, 0 replies; 6+ messages in thread
From: gccbugs at contacts dot eelis dot net @ 2004-08-16 4:12 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From gccbugs at contacts dot eelis dot net 2004-08-16 04:12 -------
I'm not convinced T() is the problem, because if I change f(T()); to "T x;
f(x);" the problem remains.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17045
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/17045] conflict between function template and class with same name
2004-08-16 3:08 [Bug c++/17045] New: conflict between function template and class with same name gccbugs at contacts dot eelis dot net
2004-08-16 3:40 ` [Bug c++/17045] " pinskia at gcc dot gnu dot org
2004-08-16 4:12 ` gccbugs at contacts dot eelis dot net
@ 2004-08-16 14:53 ` bangerth at dealii dot org
2004-12-21 13:15 ` redi at gcc dot gnu dot org
3 siblings, 0 replies; 6+ messages in thread
From: bangerth at dealii dot org @ 2004-08-16 14:53 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From bangerth at dealii dot org 2004-08-16 14:53 -------
What is really happening is that in the instantiation of ::f<N::f>, the
compiler sees the call
f(T());
Since the argument T() is of type N::f, it has to look up the name
of the function in both the global namespace and the namespace of
the argument, i.e. N (Koenig lookup). It just happens to find the
latter rather than the former.
An example that may be a little less confusing about reusing names is this:
---------------------
void h (...);
template <typename T> void g () { T t; h(t); }
namespace N
{
struct S {};
struct h;
}
void foo () { g<N::S>(); }
-----------------------
g/x> /home/bangerth/bin/gcc-3.5-pre/bin/c++ -c x.cc
x.cc: In function `void g() [with T = N::S]':
x.cc:11: instantiated from here
x.cc:8: error: `struct N::h' is not a function,
x.cc:1: error: conflict with `void h(...)'
x.cc:3: error: in call to `h'
W.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17045
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c++/17045] conflict between function template and class with same name
2004-08-16 3:08 [Bug c++/17045] New: conflict between function template and class with same name gccbugs at contacts dot eelis dot net
` (2 preceding siblings ...)
2004-08-16 14:53 ` bangerth at dealii dot org
@ 2004-12-21 13:15 ` redi at gcc dot gnu dot org
3 siblings, 0 replies; 6+ messages in thread
From: redi at gcc dot gnu dot org @ 2004-12-21 13:15 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From redi at gcc dot gnu dot org 2004-12-21 13:15 -------
Dup of bug 17365 ?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17045
^ permalink raw reply [flat|nested] 6+ messages in thread
[parent not found: <bug-17045-5473@http.gcc.gnu.org/bugzilla/>]
end of thread, other threads:[~2006-09-19 4:15 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2004-08-16 3:08 [Bug c++/17045] New: conflict between function template and class with same name gccbugs at contacts dot eelis dot net
2004-08-16 3:40 ` [Bug c++/17045] " pinskia at gcc dot gnu dot org
2004-08-16 4:12 ` gccbugs at contacts dot eelis dot net
2004-08-16 14:53 ` bangerth at dealii dot org
2004-12-21 13:15 ` redi at gcc dot gnu dot org
[not found] <bug-17045-5473@http.gcc.gnu.org/bugzilla/>
2006-09-19 4:15 ` pinskia at gcc dot gnu dot org
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