[Bug c++/13445] New: Template argument replacement "dereferences" a typedef
brad dot king at kitware dot com
gcc-bugzilla@gcc.gnu.org
Fri Dec 19 15:34:00 GMT 2003
Every version of gcc 3.3.2 I've tested has the bug. I built a copy by
downloading sources from ftp.gnu.org to be sure no distribution-specific patches
were to blame:
../gcc-3.3.2/configure \
--prefix=/home/kingb/Temp/gcc-3.3.2-install \
--enable-languages=c,c++
make bootstrap
make install
"g++ --version" reports "g++ (GCC) 3.3.2"
The following code reproduces the problem. It is expected to compile without error:
template <class T> class NestedBase {};
template <class T> class Base { protected: typedef int Protected; };
template <class T> struct Derived: public Base<T>
{
typedef typename Base<T>::Protected Public;
class Nested: public NestedBase<Public> {};
};
template class Derived<int>::Nested;
Compiling the source with "./g++ -c bug.cxx" produces this error:
bug.cxx: In instantiation of `Derived<int>::Nested':
bug.cxx:8: instantiated from here
bug.cxx:2: error: `typedef int Base<int>::Protected' is protected
bug.cxx:8: error: within this context
We see that the "Public" typedef is "dereferenced" while instantiating the
template member class "Nested", which produces the access violation.
Compiling the same source with g++ 3.2.3 or any earlier GCC version produces no
error.
--
Summary: Template argument replacement "dereferences" a typedef
Product: gcc
Version: 3.3.2
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: brad dot king at kitware dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13445
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