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* [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type
@ 2003-12-30 13:27 hetadres at email dot com
2003-12-30 13:27 ` [Bug c++/13520] " paolo at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: hetadres at email dot com @ 2003-12-30 13:27 UTC (permalink / raw)
To: gcc-bugs
g++ crashes when instanciating template class Host in the following code.
----------
template<typename regular_type> class Policy {};
template <
typename regular_type,
template<typename> class OriginalPolicy
>
class ChangedPolicy_impl {};
template <template<typename> class OriginalPolicy > class ChangedPolicy {
public:
template<typename regular_type> class Type : public
ChangedPolicy_impl<regular_type,OriginalPolicy> { };
};
template <
typename regular_type,
template<typename> class Policy1,
template<typename> class Policy2 = ChangedPolicy<Policy1>::Type
> class Host : public Policy1<regular_type>,
public Policy2<regular_type> { };
int main() {
Host<void, Policy>h;
return 0;
}
----------
$ gcc -c try.cxx
try.cxx: In instantiation of `Host<void, Policy, ChangedPolicy<OriginalPolicy>::
Type>':
try.cxx:26: instantiated from here
try.cxx:22: internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugs.gentoo.org/> for instructions.
I'm not absolutely sure about line 20 ("template<typename> class Policy2 =
ChangedPolicy<Policy1>::Type"), maybe it should be "template<typename> class
Policy2 = typename ChangedPolicy<Policy1>::Type". But then gcc says:
try.cxx:21: `template<template<class> class OriginalPolicy> template<class
regular_type> class ChangedPolicy<OriginalPolicy>::Type' used without
template parameters
try.cxx:21: ISO C++ forbids declaration of `type name' with no type
try.cxx:21: invalid default template argument
try.cxx: In function `int main()':
try.cxx:26: template argument 3 is invalid
try.cxx:26: ISO C++ forbids declaration of `h' with no type
I need this code to be working, because i have to hand it in at the University
of Antwerp next month :-/
Thanks for your help.
--
Summary: gcc crashes with inheritance + default template
parameter of nested template type
Product: gcc
Version: 3.2.3
Status: UNCONFIRMED
Severity: critical
Priority: P1
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hetadres at email 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=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/13520] gcc crashes with inheritance + default template parameter of nested template type
2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
@ 2003-12-30 13:27 ` paolo at gcc dot gnu dot org
2003-12-30 15:34 ` paolo at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: paolo at gcc dot gnu dot org @ 2003-12-30 13:27 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From paolo at gcc dot gnu dot org 2003-12-30 13:07 -------
This is an ICE on illegal, already fixed for 3.4.
A 'template' keyword is missing:
template<typename> class Policy2 = ChangedPolicy<Policy1>::template Type
^^^^^^^^
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/13520] gcc crashes with inheritance + default template parameter of nested template type
2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
2003-12-30 13:27 ` [Bug c++/13520] " paolo at gcc dot gnu dot org
@ 2003-12-30 15:34 ` paolo at gcc dot gnu dot org
2003-12-30 18:00 ` pinskia at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: paolo at gcc dot gnu dot org @ 2003-12-30 15:34 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From paolo at gcc dot gnu dot org 2003-12-30 13:27 -------
... the issue seems tricky, however: EDG-based compilers accept the amended code
(as does 3.3.2) but a 20031224 snapshot of 3.4 doesn't...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/13520] gcc crashes with inheritance + default template parameter of nested template type
2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
2003-12-30 13:27 ` [Bug c++/13520] " paolo at gcc dot gnu dot org
2003-12-30 15:34 ` paolo at gcc dot gnu dot org
@ 2003-12-30 18:00 ` pinskia at gcc dot gnu dot org
2003-12-31 12:21 ` [Bug c++/13520] [3.4 regression] " lerdsuwa at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2003-12-30 18:00 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2003-12-30 17:53 -------
ICC 6.0 does accept it after putting the template there.
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/13520] [3.4 regression] gcc crashes with inheritance + default template parameter of nested template type
2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
` (2 preceding siblings ...)
2003-12-30 18:00 ` pinskia at gcc dot gnu dot org
@ 2003-12-31 12:21 ` lerdsuwa at gcc dot gnu dot org
2004-01-02 11:41 ` cvs-commit at gcc dot gnu dot org
2004-01-02 11:42 ` lerdsuwa at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: lerdsuwa at gcc dot gnu dot org @ 2003-12-31 12:21 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From lerdsuwa at gcc dot gnu dot org 2003-12-31 10:35 -------
It's a rejects-valid for the modified testcase, probably due to
incorrect tree node created during parsing. GCC 3.3, 3.2 accept
the corrected testcase so it's a regression.
--
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |lerdsuwa at gcc dot gnu dot
|dot org |org
Status|UNCONFIRMED |ASSIGNED
Keywords| |rejects-valid
Summary|gcc crashes with inheritance|[3.4 regression] gcc crashes
|+ default template parameter|with inheritance + default
|of nested template type |template parameter of nested
| |template type
Target Milestone|--- |3.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/13520] [3.4 regression] gcc crashes with inheritance + default template parameter of nested template type
2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
` (3 preceding siblings ...)
2003-12-31 12:21 ` [Bug c++/13520] [3.4 regression] " lerdsuwa at gcc dot gnu dot org
@ 2004-01-02 11:41 ` cvs-commit at gcc dot gnu dot org
2004-01-02 11:42 ` lerdsuwa at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-01-02 11:41 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-01-02 11:41 -------
Subject: Bug 13520
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: lerdsuwa@gcc.gnu.org 2004-01-02 11:41:51
Modified files:
gcc/cp : ChangeLog cp-tree.h parser.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/g++.dg/template: qualttp22.C
Log message:
PR c++/13520
* cp-tree.h (DECL_UNBOUND_CLASS_TEMPLATE_P): New macro.
(DECL_FUNCTION_TEMPLATE_P): Use it.
(DECL_CLASS_TEMPLATE_P): Likewise.
* parser.c (cp_parser_lookup_name): Add is_template parameter.
(cp_parser_type_parameter): Adjust call to cp_parser_lookup_name.
(cp_parser_template_name): Likewise.
(cp_parser_elaborated_type_specifier): Likewise.
(cp_parser_namespace_name): Likewise.
(cp_parser_class_name): Likewise.
(cp_parser_lookup_name_simple): Likewise.
* g++.dg/template/qualttp22.C: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.3845&r2=1.3846
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cp-tree.h.diff?cvsroot=gcc&r1=1.944&r2=1.945
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/parser.c.diff?cvsroot=gcc&r1=1.141&r2=1.142
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3329&r2=1.3330
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/template/qualttp22.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/13520] [3.4 regression] gcc crashes with inheritance + default template parameter of nested template type
2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
` (4 preceding siblings ...)
2004-01-02 11:41 ` cvs-commit at gcc dot gnu dot org
@ 2004-01-02 11:42 ` lerdsuwa at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: lerdsuwa at gcc dot gnu dot org @ 2004-01-02 11:42 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From lerdsuwa at gcc dot gnu dot org 2004-01-02 11:42 -------
Fixed in the main trunk. It will be eventually released as GCC 3.4.0.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13520
^ permalink raw reply [flat|nested] 7+ messages in thread
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2003-12-30 13:27 [Bug c++/13520] New: gcc crashes with inheritance + default template parameter of nested template type hetadres at email dot com
2003-12-30 13:27 ` [Bug c++/13520] " paolo at gcc dot gnu dot org
2003-12-30 15:34 ` paolo at gcc dot gnu dot org
2003-12-30 18:00 ` pinskia at gcc dot gnu dot org
2003-12-31 12:21 ` [Bug c++/13520] [3.4 regression] " lerdsuwa at gcc dot gnu dot org
2004-01-02 11:41 ` cvs-commit at gcc dot gnu dot org
2004-01-02 11:42 ` lerdsuwa at gcc dot gnu dot org
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