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[Bug c++/17080] New: internal compiler error on template class in template class;
- From: "pippadav at dei dot unipd dot it" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Aug 2004 12:32:33 -0000
- Subject: [Bug c++/17080] New: internal compiler error on template class in template class;
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
This program make gcc 3.3.3 report an "internal compiler error, segfault":
(that's the complete source code, no includes needed; compiler version included
in comment in code)
----------------------------
#define TRIGGER_BUG
class EmptyClass {};
template <template <class U_client> class T_coreService>
class SubClass {
protected:
template <class U_client> class CoreService : public T_coreService< U_client >
{};
public:
class Core : public CoreService< EmptyClass > {};
};
#ifdef TRIGGER_BUG
/****
*****
*****
This makes the declaration of X_list in the main() segfault gcc 3.3.3:
Reading specs from /KNOPPIX/usr/bin/../lib/gcc-lib/i486-linux/3.3.3/specs
Configured with: ../src/configure -v --enable-languages=c,c++,java,f77,pascal,
objc,ada,treelang --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.3
--enable-shared --with-system-zlib --enable-nls --without-included-gettext
--enable-__cxa_atexit --enable-clocale=gnu --enable-debug --enable-java-gc=boehm
--enable-java-awt=xlib --enable-objc-gc i486-linux
Thread model: posix
gcc version 3.3.3 (Debian 20040429)
*****
*****
*****/
template <class U>
class CollectionServices {
public:
template <class U_client> class CoreService : public U_client {};
};
template <class U>
class Collection : public SubClass<CollectionServices<U>::CoreService> {};
#else
/****
*****
*****
This code does not trigger the bug, the thing changes is that this class
have no <class U> param, and so is invoked by the Collection declaration.
*****
*****
*****/
class CollectionServices {
public:
template <class U_client> class CoreService : public U_client {};
};
class Collection : public SubClass<CollectionServices::CoreService> {};
#endif
struct Dummy {};
typedef Collection<Dummy>::Core List;
int main() {
List X_list;
return 0;
}
--
Summary: internal compiler error on template class in template
class;
Product: gcc
Version: 3.3.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: pippadav at dei dot unipd dot it
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17080