[Bug c++/26512] New: g++ doesn't recognize user-defined operator<<(ostream, const pair

[olaf dot dietsche at gfa-net dot de]

d:/programme/mingw/include/c++/4.0.2/bits/ostream.tcc:616: note:   
 std::basic_ostream& std::operator<<(std::basic_ostream&, const char*) [with _Traits = std::char_traits]
d:/programme/mingw/include/c++/4.0.2/ostream:497: note:
std::basic_ostream& std::operator<<(std::basic_ostream&, const signed char*) [with _Traits = std::char_traits]
d:/programme/mingw/include/c++/4.0.2/ostream:502: note:
std::basic_ostream& std::operator<<(std::basic_ostream&, const unsigned char*) [with _Traits = std::char_traits]


-- 
   Summary: g++ doesn't recognize user-defined operator<<(ostream,
const pair &)
   Product: gcc
   Version: 4.0.2
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: olaf dot dietsche at gfa-net dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26512

[Bug c++/26512] g++ doesn't recognize user-defined operator<<(ostream, const pair

[olaf dot dietsche at gfa-net dot de]

--- Comment #1 from olaf dot dietsche at gfa-net dot de  2006-03-01 14:35 
---
Created an attachment (id=10946)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10946&action=view)
Preprocessed gccbug.cpp


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26512

[Bug c++/26512] g++ doesn't recognize user-defined operator<<(ostream, const pair

[olaf dot dietsche at gfa-net dot de]

--- Comment #4 from olaf dot dietsche at gfa-net dot de  2006-03-03 22:57 
---
I looked at your link and at issue 197. I don't see how this applies to my bug
report, especially in connection with _user defined_ types. What I don't
understand is, why does g++ handle builtin types different than user defined
types. e.g:

operator<<(ostream, const pair &)
vs.
operator<<(ostream, const pair &)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26512

[Bug c++/26512] g++ doesn't recognize user-defined operator<<(ostream, const pair

[olaf dot dietsche at gfa-net dot de]

--- Comment #6 from olaf dot dietsche at gfa-net dot de  2006-03-05 14:21 
---
Sorry, if my example wasn't clear enough :-(. I'll try to clarify.

M::value_type is std::map::value_type, which is std::map::pair in my first example.

g++ doesn't recognize the user defined
operator <<(std::ostream &f, const M::value_type &), which is
operator<<(ostream &, const pair &)

If I change double to struct A, g++ _does_ recognize the user defined
operator <<(std::ostream &f, const M::value_type &), which is
- in my second example - operator<<(ostream, const pair &)

And this is my problem: the difference in ignoring the user defined
operator<<() in the first case and recognizing the user defined operator<<()
in the second case.

I hope, this makes my problem a bit more understandable.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26512

[Bug c++/26512] g++ doesn't recognize user-defined operator<<(ostream, const pair

[olaf dot dietsche at gfa-net dot de]

--- Comment #8 from olaf dot dietsche at gfa-net dot de  2006-03-05 16:22 
---
Which doesn't make this inconsistent behaviour any better. I don't know Comeau
C++, is it some sort of reference implementation?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26512