[Bug c++/47329] New: cc1plus segfaults when using variadic function template

[gmaizel at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47329

           Summary: cc1plus segfaults when using variadic function
                    template
           Product: gcc
           Version: 4.4.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: gmai...@gmail.com


g++ reports segfault in cc1plus when attempting to compile code sample provided
below:

$ g++ -std=c++0x -o test test.cpp

g++: Internal error: Segmentation fault (program cc1plus)
Please submit a full bug report.
See <file:///usr/share/doc/gcc-4.4/README.Bugs> for instructions.

$ g++ --version

g++ (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
Copyright (C) 2010 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.



------ test.cpp -----------------------

# include <iostream>
# include <vector>

void print(const std::vector<int>& pack)
{
    for(size_t i=0; i<pack.size(); i++)
        std::cout << pack[i] << " ";
    std::cout << "\n";
}

template<typename ...Vals> 
void print(std::vector<int>& pack, int v1, Vals... vals)
{
    pack.push_back(v1);
    print(pack, vals...);
}

template<typename ...Vals> 
void print(Vals... vals)
{
    std::vector<int> pack;
    print(pack, vals...);
}


int main()
{
    print(1);
    print("a"); // <-- this line triggers the failure
    print(2, 3, 4, 5);
    print(6, 7);
}