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* [Bug c++/43382] New: Internal error on C++0x code
@ 2010-03-15 20:14 chris at bubblescope dot net
2010-03-15 23:56 ` [Bug c++/43382] ICE " paolo dot carlini at oracle dot com
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: chris at bubblescope dot net @ 2010-03-15 20:14 UTC (permalink / raw)
To: gcc-bugs
The following code causes an assert on a recent svn g++, with -std=c++0x. On
g++ 4.4 it produces an error. I believe the code to be valid, but am not 100%
positive.
#include <vector>
struct Range
{
int lb;
int ub;
Range(int i, int j) : lb(i), ub(j) {}
Range(const Range& r) = default;
Range() = default;
};
template<class T>
T deref(const T& t)
{ return t; }
template <class T, template <typename T, typename...> class Cont,
class... Args>
auto
deref(const Cont<T>& u, int i, Args... args)
-> decltype(deref(u[i], args...))
{ deref(u[i], args...); }
template <class T, template <typename T, typename...> class Cont,
class... Args>
auto
deref(const Cont<T>& u, Range r, Args... args)
-> Cont<decltype(deref(u[0], args...))>
{
typedef decltype(deref(u[0], args...)) member;
Cont<member> retval;
for(int i = r.lb; i <= r.ub; ++i)
{
retval.push_back(deref(u[i], args...));
}
return retval;
}
int main(void)
{
std::vector<std::vector<std::vector<int>>> v;
int i = deref(v, 1,2,3);
std::vector<int> j = deref(v, 1, Range(1,2), 3);
}
--
Summary: Internal error on C++0x code
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: chris at bubblescope dot net
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] ICE on C++0x code
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
@ 2010-03-15 23:56 ` paolo dot carlini at oracle dot com
2010-03-16 8:39 ` chris at bubblescope dot net
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: paolo dot carlini at oracle dot com @ 2010-03-15 23:56 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from paolo dot carlini at oracle dot com 2010-03-15 23:56 -------
If you could reduce it somewhat, it would be appreciated.
Let's add Jason in CC.
--
paolo dot carlini at oracle dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu dot org
Summary|Internal error on C++0x code|ICE on C++0x code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] ICE on C++0x code
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
2010-03-15 23:56 ` [Bug c++/43382] ICE " paolo dot carlini at oracle dot com
@ 2010-03-16 8:39 ` chris at bubblescope dot net
2010-03-16 10:28 ` paolo dot carlini at oracle dot com
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: chris at bubblescope dot net @ 2010-03-16 8:39 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from chris at bubblescope dot net 2010-03-16 08:38 -------
Reduced testcase:
template<class T>
struct Container
{ T f() const; };
template<class T>
T deref(const T& t)
{ return t; }
template <class T, class... Args>
auto
deref(const T& u, int r, Args... args)
-> decltype(deref(u.f(), args...))
{ return deref(u.f(), args...); }
int main(void)
{
Container<Container<int>> v;
deref(v,1,2);
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] ICE on C++0x code
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
2010-03-15 23:56 ` [Bug c++/43382] ICE " paolo dot carlini at oracle dot com
2010-03-16 8:39 ` chris at bubblescope dot net
@ 2010-03-16 10:28 ` paolo dot carlini at oracle dot com
2010-03-16 11:51 ` rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: paolo dot carlini at oracle dot com @ 2010-03-16 10:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from paolo dot carlini at oracle dot com 2010-03-16 10:27 -------
Thanks Chris.
--
paolo dot carlini at oracle dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-03-16 10:27:59
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] ICE on C++0x code
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
` (2 preceding siblings ...)
2010-03-16 10:28 ` paolo dot carlini at oracle dot com
@ 2010-03-16 11:51 ` rguenth at gcc dot gnu dot org
2010-05-26 4:59 ` [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates jason at gcc dot gnu dot org
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-03-16 11:51 UTC (permalink / raw)
To: gcc-bugs
[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 411 bytes --]
------- Comment #4 from rguenth at gcc dot gnu dot org 2010-03-16 11:51 -------
4.4 ICEs for me:
> g++-4.4 -S t.C -std=c++0x
t.C: In function int main():
t.C:12: internal compiler error: in tsubst_copy, at cp/pt.c:10077
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.opensuse.org/> for instructions.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
` (3 preceding siblings ...)
2010-03-16 11:51 ` rguenth at gcc dot gnu dot org
@ 2010-05-26 4:59 ` jason at gcc dot gnu dot org
2010-05-26 15:00 ` jason at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu dot org @ 2010-05-26 4:59 UTC (permalink / raw)
To: gcc-bugs
--
jason at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jason at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Last reconfirmed|2010-03-16 10:27:59 |2010-05-26 04:59:29
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
` (4 preceding siblings ...)
2010-05-26 4:59 ` [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates jason at gcc dot gnu dot org
@ 2010-05-26 15:00 ` jason at gcc dot gnu dot org
2010-05-26 15:19 ` jason at gcc dot gnu dot org
2010-05-26 17:15 ` jason at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu dot org @ 2010-05-26 15:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from jason at gcc dot gnu dot org 2010-05-26 15:00 -------
Subject: Bug 43382
Author: jason
Date: Wed May 26 15:00:02 2010
New Revision: 159873
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159873
Log:
PR c++/43382
* pt.c (fn_type_unification): Don't get confused by recursive
unification.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/variadic101.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
` (5 preceding siblings ...)
2010-05-26 15:00 ` jason at gcc dot gnu dot org
@ 2010-05-26 15:19 ` jason at gcc dot gnu dot org
2010-05-26 17:15 ` jason at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu dot org @ 2010-05-26 15:19 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from jason at gcc dot gnu dot org 2010-05-26 15:19 -------
Subject: Bug 43382
Author: jason
Date: Wed May 26 15:18:46 2010
New Revision: 159875
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=159875
Log:
PR c++/43382
* pt.c (fn_type_unification): Don't get confused by recursive
unification.
Added:
branches/gcc-4_5-branch/gcc/testsuite/g++.dg/cpp0x/variadic101.C
Modified:
branches/gcc-4_5-branch/gcc/cp/ChangeLog
branches/gcc-4_5-branch/gcc/cp/pt.c
branches/gcc-4_5-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates
2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
` (6 preceding siblings ...)
2010-05-26 15:19 ` jason at gcc dot gnu dot org
@ 2010-05-26 17:15 ` jason at gcc dot gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: jason at gcc dot gnu dot org @ 2010-05-26 17:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from jason at gcc dot gnu dot org 2010-05-26 17:15 -------
Fixed for 4.5.1.
--
jason at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.5.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43382
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2010-05-26 17:15 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
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2010-03-15 20:14 [Bug c++/43382] New: Internal error on C++0x code chris at bubblescope dot net
2010-03-15 23:56 ` [Bug c++/43382] ICE " paolo dot carlini at oracle dot com
2010-03-16 8:39 ` chris at bubblescope dot net
2010-03-16 10:28 ` paolo dot carlini at oracle dot com
2010-03-16 11:51 ` rguenth at gcc dot gnu dot org
2010-05-26 4:59 ` [Bug c++/43382] [C++0x] ICE with auto return type and variadic templates jason at gcc dot gnu dot org
2010-05-26 15:00 ` jason at gcc dot gnu dot org
2010-05-26 15:19 ` jason at gcc dot gnu dot org
2010-05-26 17:15 ` jason at gcc dot gnu dot org
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