[Bug c++/54090] New: internal compiler error: in unify, at cp/pt.c:15731

[dicomj23 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54090

             Bug #: 54090
           Summary: internal compiler error: in unify, at cp/pt.c:15731
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: dicom...@gmail.com


~$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-linux-gnu/4.6/lto-wrapper
Target: i686-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object
--enable-plugin --enable-objc-gc --enable-targets=all --disable-werror
--with-arch-32=i686 --with-tune=generic --enable-checking=release
--build=i686-linux-gnu --host=i686-linux-gnu --target=i686-linux-gnu
Thread model: posix
gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) 




~$ gcc main.cpp & cat main.cpp
[1] 9543



template <int n>
struct X {

  template <int N, bool = (n >= N), typename T = void> struct Y;

  template <int N, typename T>
  struct Y<N, true, T> {};

  static const int M = n / 2;

  template <typename T>
  struct Y<X::M/* using "n / 2" instead works fine*/ , true, T> {};
};

void foo() {
  X<10>::Y<10/2> y;
}



~$ main.cpp: In function ‘void foo()’:
main.cpp:16:18: internal compiler error: in unify, at cp/pt.c:15731