[Bug libstdc++/18054] New: Undefined reference to ~basic_iostream(), with -O[12]

[veksler at il dot ibm dot com]

This no-op code fails to link when compiled with optimizations enabled.
Trivial code fails with -O3, a bit more complex code will fail with -O[12] .
(Both examples are given below)

$ cat tO3.cpp
#include <sstream>
int main()
{
    std::stringstream name;
    name <<std::endl;
}

$ /home/veksler/gcc-4.0-20041017/bin/g++ -O3 tO3.cpp
/tmp/ccqr3TzD.o(.text+0xb5): In function `main':
: undefined reference to `std::basic_iostream<char, std::char_traits<char>
>::~basic_iostream()'
[repeating messages trimmed]

$ cat t.cpp
#include <iostream>
#include <sstream>

void NoAllocate()
{
    if (false)
       std::allocator<int>().allocate(1);
}

struct Contained
{
  Contained() { NoAllocate(); }
};

struct A
{
   Contained _parent;
};

inline void Nop() {}

int main()
{
    std::stringstream name;
    name <<std::endl;
    name << 1;
    Nop();
    A a;
}

$ /home/veksler/gcc-4.0-20041017/bin/g++ -O t.cpp
tmp/ccEewHPP.o(.text+0x1c5): In function `main':
: undefined reference to `std::basic_iostream<char, std::char_traits<char>
>::~basic_iostream()'

[repeating messages trimmed]

$ /home/veksler/gcc-4.0-20041017/bin/g++ -v
Reading specs from
/home/veksler/gcc-4.0-20041017/lib/gcc/i686-pc-linux-gnu/4.0.0/specs
Configured with: ../gcc-4.0-20041017.src/configure
--prefix=/home/veksler/gcc-4.0-20041017 --enable-languages=c++
Thread model: posix
gcc version 4.0.0 20041017 (experimental)

$ rpm -q binutils
binutils-2.14.90.0.4-35

-- 
           Summary: Undefined reference to ~basic_iostream(),  with -O[12]
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: veksler at il dot ibm dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18054