Code calling ostream::operator<<(streambuf*) fails to link with g++ 4.1.0 when
_GLIBCXX_DEBUG is defined; more specifically, when _GLIBCXX_EXTERN_TEMPLATE is
defined to 0. This problem is not observed with
1) g++ 4.0.1 on the same system or
2) the same configuration of g++ 4.1.0 for i686-linux
test.cc:
"""
#include <iostream>
main() {
std::cout << std::cin.rdbuf();
}
"""
[EMAIL PROTECTED] g++ -D_GLIBCXX_DEBUG test.cc
/tmp/ccyq7RoG.o(.gnu.linkonce.t._ZNSolsEPSt15basic_streambufIcSt11char_traitsIcEE+0x75):
In function `std::basic_ostream<char, std::char_traits<char>
>::operator<<(std::basic_streambuf<char, std::char_traits<char> >*)':
: undefined reference to `long std::__copy_streambufs<char,
std::char_traits<char> >(std::basic_streambuf<char, std::char_traits<char> >*,
std::basic_streambuf<char, std::char_traits<char> >*)'
collect2: ld returned 1 exit status
the same link error occurs using "g++ -D_GLIBCXX_EXTERN_TEMPLATE=0 test.cc"
[EMAIL PROTECTED] g++ -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.1.0/configure -enable-languages=c,c++
--enable-concept-checks --enable-__cxa_atexit --disable-checking
--prefix=/home/ctsa/opt/x86_64-linux/gcc-4.1
Thread model: posix
gcc version 4.1.0
--
Summary: 4.1.0 regression: std::__copy_streambufs link failure
when _GLIBCXX_DEBUG is defined
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ctsa at u dot washington dot edu
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26526
