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Date: Thu, 31 Dec 2009 06:06:00 -0000
Subject: [Bug c++/42563]  New: internal compiler error in is_ancestor, at cp/name-lookup.c
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From: "thomasd57 at yahoo dot com" <gcc-bugzilla@gcc.gnu.org>
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Here is the testcase:

template<typename T>
struct A {
    A() {}
};

struct B {
    B() {}
    A<B>    foo();
};

template<typename T>
A<T>    T::foo() {
    return A<T>();
}

template class A<B>;

And the command line:
> g++ -c test.cc -Wall
test.cc:13: internal compiler error: in is_ancestor, at cp/name-lookup.c:2236
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugs.opensuse.org> for instructions.

> g++ -v
Using built-in specs.
Target: x86_64-suse-linux
Configured with: ../configure --enable-threads=posix --prefix=/usr
--with-local-prefix=/usr/local --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,java,ada
--enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.1.2
--enable-ssp --disable-libssp --disable-libgcj --with-slibdir=/lib64
--with-system-zlib --enable-shared --enable-__cxa_atexit
--enable-libstdcxx-allocator=new --program-suffix=
--enable-version-specific-runtime-libs --without-system-libunwind
--with-cpu=generic --host=x86_64-suse-linux
Thread model: posix
gcc version 4.1.2 20070115 (prerelease) (SUSE Linux)

> cat /etc/SuSE-release
SUSE Linux Enterprise Server 10 (x86_64)
VERSION = 10
PATCHLEVEL = 1


-- 
           Summary: internal compiler error in is_ancestor, at cp/name-
                    lookup.c
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: thomasd57 at yahoo dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42563