This is the mail archive of the
gcc-prs@gcc.gnu.org
mailing list for the GCC project.
c++/3526: ICE on inherited enum
- To: gcc-gnats at gcc dot gnu dot org
- Subject: c++/3526: ICE on inherited enum
- From: Kurt Garloff <kurt at garloff dot de>
- Date: Mon, 2 Jul 2001 10:20:12 +0200
>Number: 3526
>Category: c++
>Synopsis: ICE on inherited enum
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Mon Jul 02 01:46:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator: Kurt Garloff
>Release: 3.0.1 20010701 (prerelease)
>Organization:
SuSE GmbH Nuernberg
>Environment:
System: Linux pckurt.casa-etp.nl 2.4.3-p7-amp-SMP #37 SMP Tue Apr 24 00:19:58 CEST 2001 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../configure --with-gcc-version-trigger=/raid/egcs/gcc/version.c --host=i686-pc-linux-gnu --with-system-zlib --with-gnu-ld --with-gnu-as --enable-libstdcxx-v3 --prefix=/raid/gcc300 --enable-haifa --enable-threads=posix : (reconfigured) : (reconfigured) ../configure --with-gcc-version-trigger=/raid/egcs/gcc/version.c --host=i686-pc-linux-gnu --with-system-zlib --with-gnu-ld --with-gnu-as --enable-libstdcxx-v3 --prefix=/raid/gcc300 --enable-haifa --enable-threads=posix
glibc-2.1.3
>Description:
g++ 3.0.1 (prerelease) gives a strange error message
(tells me to replace the declaration with the words
that I'm actually using) and then dies with an Internal
Error (SIGSEGV).
garloff@pckurt:~/C > g++ -c inherited_enum.cpp
inherited_enum.cpp:31: warning: enum typename test2<T>::MyEnum' declares a new
type at namespace scope;
to refer to the inherited type, say enum test2::MyEnum'
(names from dependent base classes are not visible to unqualified name
lookup)
inherited_enum.cpp:31: Internal error: Segmentation fault
Please submit a full bug report,
[...]
Notes: gcc-2.95 dies with an ICE as well (though without
the error message before.)
DEC CXX does compile the code.
>How-To-Repeat:
Compile this program:
/** \file inherited_enum.cpp
* Both gcc-2.95.3 and gcc-3.0.0 produce an ICE on this code.
* Note: Using a typedef does solve the problem.
* Using the keyword typename does not help.
* The syntax test1<T>::MyEnum produces the same ICE.
* However, gcc-3.0.0 suggested using test2::MyEnum.
* Doing so, gcc-3.0.0 still complains that test2::MyEnum should be used.
* Afterwards: Internal Error: Segmentation Fault
* I (and DEC's CXX) believe the code is legal, but I can't tell for sure.
* (w) Kurt Garloff <kurt@garloff.de>, 2001-06-27, (c) GNU GPL
*/
template <typename T>
class test1
{
public:
test1 (int i) { if (i==0) m_en = EN0; else m_en = EN1; };
protected:
enum MyEnum { EN0, EN1, EN2, EN3 };
MyEnum m_en;
};
template <typename T>
class test2 : public test1<T>
{
public:
test2 (int i, int j) : test1<T>(i) {if (j==0) m_en2 = EN0; else m_en2 = EN1; };
protected:
//enum test1<T>::MyEnum m_en2;
enum test2::MyEnum m_en2;
};
int main ()
{
test1<int> t1(1);
test2<int> t2(1,0);
}
>Fix:
If you typedef the enum type, everything works fine.
Proper fix: gcc should handle it, I believe ...
>Release-Note:
>Audit-Trail:
>Unformatted: