[Bug c++/40260] New: g++ segfaults compiling template code

[tux008 at googlemail dot com]

Hello everybody,

today, I noticed a bug in gcc 4.4.0. The compiler segfaulted during 
the compilation process. I also tested the same code with gcc 4.3.3, which
works perfectly fine.
I narrowed it down to the following test program:

------------------------------------------------

  template <typename T> class test
  {
          private:
                  int num_bins;
          public:
                  void testing(void);
  };
  template <typename T> void test<T>::testing(void)
  {
          double jackdata[this->num_bins]; 
  }

int main()
{
        test<double> t;
        t.testing();
}

-----------------------------------------------

The compilation command line is: 
  g++ test.cc
Error output:
  test.cc: In member function ‘void test<T>::testing() [with T = double]’:
  test.cc:17:   instantiated from here
  test.cc:10: internal compiler error: Segmentation fault
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <http://gcc.gnu.org/bugs.html> for instructions.

System information:
gcc -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/usr --enable-shared
--enable-languages=c,c++,fortran,objc,obj-c++ --enable-threads=posix
--mandir=/usr/share/man --infodir=/usr/share/info --enable-__cxa_atexit
--disable-multilib --libdir=/usr/lib --libexecdir=/usr/lib --enable-clocale=gnu
--disable-libstdcxx-pch --with-tune=generic
Thread model: posix
gcc version 4.4.0 (GCC)

If you need further information, please let me know.


-- 
           Summary: g++ segfaults compiling template code
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tux008 at googlemail dot com
 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=40260