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* [Bug c++/51194] New: ICE about template aliasing
@ 2011-11-17 13:19 fate66260 at gmail dot com
2011-11-17 17:37 ` [Bug c++/51194] " dodji at seketeli dot org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: fate66260 at gmail dot com @ 2011-11-17 13:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
Bug #: 51194
Summary: ICE about template aliasing
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: fate66260@gmail.com
compiler option: -Wall -std=c++0x
error message:
242:43: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in lookup_template_class_1, at cp/pt.c:7293
code:
/*
including, boost/mpl/and.hpp
boost/type_traits/is_same.hpp
*/
template < bool, class T = void >
enable_if_c
{
typedef T type;
};
template < class T >
enable_if_c<false, T>
{ };
template < class Cond, class T = void >
using enable_if = enable_if_c<Cond::value, T>;
template < template <class...> class... Conds >
struct condition_and
{
template < class... Types >
using enable = enable_if<boost::mpl::and_<Conds<Types>...>>;
};
template < class T, class U = T >
using Test = typename condition_and
<
// For any two parameters meta-functions, same error occurs.
boost::is_same
, boost::is_same
, boost::is_same
>::template enable<T, U>; // here
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
@ 2011-11-17 17:37 ` dodji at seketeli dot org
2011-11-18 9:50 ` fate66260 at gmail dot com
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: dodji at seketeli dot org @ 2011-11-17 17:37 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
--- Comment #1 from dodji at seketeli dot org <dodji at seketeli dot org> 2011-11-17 17:33:28 UTC ---
I could not reproduce the ICE with svn trunk revision r181378. Here is
what I get:
$ cat -n test.cc
1 #include <boost/mpl/and.hpp>
2 #include <boost/type_traits/is_same.hpp>
3
4 template < bool, class T = void >
5 enable_if_c
6 {
7 typedef T type;
8 };
9 template < class T >
10 enable_if_c<false, T>
11 { };
12
13 template < class Cond, class T = void >
14 using enable_if = enable_if_c<Cond::value, T>;
15
16 template < template <class...> class... Conds >
17 struct condition_and
18 {
19 template < class... Types >
20 using enable = enable_if<boost::mpl::and_<Conds<Types>...>>;
21 };
22
23 template < class T, class U = T >
24 using Test = typename condition_and
25 <
26 // For any two parameters meta-functions, same error occurs.
27 boost::is_same
28 , boost::is_same
29 , boost::is_same
30 >::template enable<T, U>; // here
$ g++ -std=c++0x test.cc
test.cc:5:1: erreur: ‘enable_if_c’ does not name a type
test.cc:10:1: erreur: ‘enable_if_c’ does not name a type
test.cc:14:19: erreur: expected type-specifier before ‘enable_if_c’
test.cc:14:19: erreur: expected ‘;’ before ‘enable_if_c’
test.cc:14:19: erreur: ‘enable_if_c’ does not name a type
test.cc:14:19: erreur: mismatched argument pack lengths while expanding
‘Conds<Types>’
$
Note that the code is not valid.
If you are still getting an ICE, please provide the pre-processed output
(using the option -save-temps, for instance) so that I can be sure to
use a similar environment as the one you used.
Thanks.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
2011-11-17 17:37 ` [Bug c++/51194] " dodji at seketeli dot org
@ 2011-11-18 9:50 ` fate66260 at gmail dot com
2011-11-18 15:14 ` [Bug c++/51194] [C++0x] " dodji at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: fate66260 at gmail dot com @ 2011-11-18 9:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
--- Comment #2 from fate66260 at gmail dot com 2011-11-18 08:59:28 UTC ---
http://ideone.com/lZEbs
g++ (GCC) 4.7.0 20111112
g++ -std=c++0x a.cpp
--------------------------------------------------------------------------
a.cpp: In instantiation of 'struct enable_and<is_same, is_same, is_same>':
a.cpp:110:19: required from here
a.cpp:91:46: error: wrong number of template arguments (1, should be 2)
a.cpp:69:8: error: provided for 'template<class, class> struct is_same'
a.cpp:91:46: error: wrong number of template arguments (1, should be 2)
a.cpp:69:8: error: provided for 'template<class, class> struct is_same'
a.cpp:110:41: internal compiler error: tree check: expected class 'type', have
'
exceptional' (error_mark) in lookup_template_class_1, at cp/pt.c:7293
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
--------------------------------------------------------------------------
Lines 69 and 91,
[C++0x] Inner class alias-definition variadic template error
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51180
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] [C++0x] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
2011-11-17 17:37 ` [Bug c++/51194] " dodji at seketeli dot org
2011-11-18 9:50 ` fate66260 at gmail dot com
@ 2011-11-18 15:14 ` dodji at gcc dot gnu.org
2011-11-18 19:49 ` dodji at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-11-18 15:14 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
Dodji Seketeli <dodji at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2011-11-18
CC|dodji at gcc dot gnu.org |
AssignedTo|unassigned at gcc dot |dodji at gcc dot gnu.org
|gnu.org |
Ever Confirmed|0 |1
--- Comment #3 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-11-18 15:09:19 UTC ---
Confirmed. Thanks.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] [C++0x] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
` (2 preceding siblings ...)
2011-11-18 15:14 ` [Bug c++/51194] [C++0x] " dodji at gcc dot gnu.org
@ 2011-11-18 19:49 ` dodji at gcc dot gnu.org
2011-11-19 14:57 ` dodji at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-11-18 19:49 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
--- Comment #4 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-11-18 19:18:46 UTC ---
Here is a smaller reproducer:
template<class U, class V>
struct foo {};
template<class U, class V=char>
struct P {};
template<template<class... U> class... TT>
struct bar {
template<class... Args>
using mem = P<TT<Args...>...>;
};
bar<foo>::mem<int, char> b;
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] [C++0x] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
` (3 preceding siblings ...)
2011-11-18 19:49 ` dodji at gcc dot gnu.org
@ 2011-11-19 14:57 ` dodji at gcc dot gnu.org
2011-11-20 7:19 ` dodji at gcc dot gnu.org
2011-11-20 9:04 ` dodji at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-11-19 14:57 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
--- Comment #5 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-11-19 14:07:22 UTC ---
A candidate patch has been posted to
http://gcc.gnu.org/ml/gcc-patches/2011-11/msg01979.html
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] [C++0x] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
` (4 preceding siblings ...)
2011-11-19 14:57 ` dodji at gcc dot gnu.org
@ 2011-11-20 7:19 ` dodji at gcc dot gnu.org
2011-11-20 9:04 ` dodji at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-11-20 7:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
--- Comment #6 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-11-20 07:10:31 UTC ---
Author: dodji
Date: Sun Nov 20 07:10:24 2011
New Revision: 181523
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181523
Log:
PR c++/51194 - ICE with invalid alias template
gcc/cp/
PR c++/51194
* pt.c (lookup_template_class_1): Go out early if the type of the
template is error_mark_node.
gcc/testsuite/
PR c++/51194
* g++.dg/cpp0x/alias-decl-15.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/alias-decl-15.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug c++/51194] [C++0x] ICE about template aliasing
2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
` (5 preceding siblings ...)
2011-11-20 7:19 ` dodji at gcc dot gnu.org
@ 2011-11-20 9:04 ` dodji at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-11-20 9:04 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51194
Dodji Seketeli <dodji at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #7 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-11-20 07:11:48 UTC ---
This should be fixed in trunk (4.7) now.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2011-11-20 7:12 UTC | newest]
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2011-11-17 13:19 [Bug c++/51194] New: ICE about template aliasing fate66260 at gmail dot com
2011-11-17 17:37 ` [Bug c++/51194] " dodji at seketeli dot org
2011-11-18 9:50 ` fate66260 at gmail dot com
2011-11-18 15:14 ` [Bug c++/51194] [C++0x] " dodji at gcc dot gnu.org
2011-11-18 19:49 ` dodji at gcc dot gnu.org
2011-11-19 14:57 ` dodji at gcc dot gnu.org
2011-11-20 7:19 ` dodji at gcc dot gnu.org
2011-11-20 9:04 ` dodji at gcc dot gnu.org
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