https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64571
Bug ID: 64571
Summary: [5.0 Regression] Link failure with fstream due to new
string implementation
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
CC: redi at gcc dot gnu.org
The following valid program (compiled with -std=c++11) fails to link using
trunk since 2014-12-19:
=======================================
#include <fstream>
int main()
{
const std::string s = "MyFile.txt";
std::fstream fs1(s);
fs1.close();
fs1.open(s);
fs1.close();
std::ifstream fs2(s);
fs2.close();
fs2.open(s);
fs2.close();
std::ofstream fs3(s);
fs3.close();
fs3.open(s);
fs3.close();
return 0;
}
=======================================
/tmp/ccSD2wgR.o: In function `main':
StringBug.cc:(.text+0x62): undefined reference to `std::basic_fstream<char,
std::char_traits<char> >::basic_fstream(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
StringBug.cc:(.text+0x9b): undefined reference to `std::basic_fstream<char,
std::char_traits<char> >::open(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
StringBug.cc:(.text+0xb9): undefined reference to `std::basic_ifstream<char,
std::char_traits<char> >::basic_ifstream(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
StringBug.cc:(.text+0xe6): undefined reference to `std::basic_ifstream<char,
std::char_traits<char> >::open(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
StringBug.cc:(.text+0x110): undefined reference to `std::basic_ofstream<char,
std::char_traits<char> >::basic_ofstream(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
StringBug.cc:(.text+0x149): undefined reference to `std::basic_ofstream<char,
std::char_traits<char> >::open(std::__cxx11::basic_string<char,
std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
collect2: error: ld returned 1 exit status
This is related to PR64422 and PR64449.
