https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88681
Bug ID: 88681
Summary: Missing symbol exports in libstdc++.so
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
The following fails to link:
#define _GLIBCXX_USE_CXX11_ABI 0
#include <locale>
#include <sstream>
#include <string>
template<typename C>
void test_time_get()
{
using namespace std;
locale loc_c = locale::classic();
basic_istringstream<C> iss;
iss.imbue(loc_c);
const time_get<C>& tget = use_facet<time_get<C>>(iss.getloc());
typedef istreambuf_iterator<C> iter;
const iter end;
tm time;
ios_base::iostate err = ios_base::badbit;
tget.get(iter(iss), end, iss, err, &time, 'Y');
}
std::string s = "C";
template<typename C>
struct facet : std::collate_byname<C>
{
facet() : std::collate_byname<C>(s) { }
};
template<typename C>
void
test_collate_byname()
{
facet<C> c;
}
int main()
{
test_time_get<char>();
test_time_get<wchar_t>();
test_collate_byname<char>();
test_collate_byname<wchar_t>();
}
The errors are:
/usr/bin/ld: /tmp/ccHErRY2.o: in function `void test_time_get<char>()':
/tmp/missing.cc:22: undefined reference to `std::time_get<char,
std::istreambuf_iterator<char, std::char_traits<char> >
>::get(std::istreambuf_iterator<char, std::char_traits<char> >,
std::istreambuf_iterator<char, std::char_traits<char> >, std::ios_base&,
std::_Ios_Iostate&, tm*, char, char) const'
/usr/bin/ld: /tmp/ccHErRY2.o: in function `void test_time_get<wchar_t>()':
/tmp/missing.cc:22: undefined reference to `std::time_get<wchar_t,
std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >
>::get(std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >,
std::istreambuf_iterator<wchar_t, std::char_traits<wchar_t> >, std::ios_base&,
std::_Ios_Iostate&, tm*, char, char) const'
/usr/bin/ld: /tmp/ccHErRY2.o: in function `facet<char>::facet()':
/tmp/missing.cc:30: undefined reference to
`std::collate_byname<char>::collate_byname(std::string const&, unsigned long)'
/usr/bin/ld: /tmp/ccHErRY2.o: in function `facet<wchar_t>::facet()':
/tmp/missing.cc:30: undefined reference to
`std::collate_byname<wchar_t>::collate_byname(std::string const&, unsigned
long)'
collect2: error: ld returned 1 exit status
The exports have been missing since these symbols were added for GCC 5.1
