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* [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
@ 2011-01-17 8:02 schmidt-thieme at ismll dot de
2011-01-17 11:31 ` [Bug c++/47326] " paolo.carlini at oracle dot com
` (9 more replies)
0 siblings, 10 replies; 11+ messages in thread
From: schmidt-thieme at ismll dot de @ 2011-01-17 8:02 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
Summary: ICE in tsubst_copy (triggered by dependency of return
type on parameter pack size)
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: schmidt-thieme@ismll.de
gcc (snapshot gcc-4.6-20110115) throws an internal compiler error when
compiling the attached file
"bug-gcc-ICE-return_type_depends_on_variadic_size.ii"
> g++ -std=c++0x bug-gcc-ICE-return_type_depends_on_variadic_size.ii
bug-gcc-ICE-return_type_depends_on_variadic_size.cpp: In function ‘int main()’:
bug-gcc-ICE-return_type_depends_on_variadic_size.cpp:12:8: internal compiler
error:
in tsubst_copy, at cp/pt.c:11242
This bug is similar, but not identical to
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47289
reported a couple of days ago by me and meanwhile fixed by Jason
Merrill -- thank you a a lot ! (as gcc/testsuite/g++.dg/cpp0x/variadic105.C
now does not throw an ICE anymore.)
gcc was build from source and configured via
> configure --prefix=/opt/prog/gcc/ -enable-languages=c,c++,fortran --disable-multilib
on ubuntu
> uname -a
Linux lst-desktop 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 05:14:15 UTC 2010
x86_64 GNU/Linux
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
@ 2011-01-17 11:31 ` paolo.carlini at oracle dot com
2011-01-17 16:03 ` hjl.tools at gmail dot com
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-01-17 11:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-01-17 10:13:14 UTC ---
Let's add Jason in CC for this one too.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
2011-01-17 11:31 ` [Bug c++/47326] " paolo.carlini at oracle dot com
@ 2011-01-17 16:03 ` hjl.tools at gmail dot com
2011-01-17 22:34 ` schmidt-thieme at ismll dot de
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: hjl.tools at gmail dot com @ 2011-01-17 16:03 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2011.01.17 15:49:07
Ever Confirmed|0 |1
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-17 15:49:07 UTC ---
Where is the attached file?
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
2011-01-17 11:31 ` [Bug c++/47326] " paolo.carlini at oracle dot com
2011-01-17 16:03 ` hjl.tools at gmail dot com
@ 2011-01-17 22:34 ` schmidt-thieme at ismll dot de
2011-01-18 14:21 ` [Bug c++/47326] [4.4/4.5/4.6 Regression] " hjl.tools at gmail dot com
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: schmidt-thieme at ismll dot de @ 2011-01-17 22:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
--- Comment #3 from Lars Schmidt-Thieme <schmidt-thieme at ismll dot de> 2011-01-17 21:52:18 UTC ---
Created attachment 23006
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23006
file producing the ICE
sorry
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (2 preceding siblings ...)
2011-01-17 22:34 ` schmidt-thieme at ismll dot de
@ 2011-01-18 14:21 ` hjl.tools at gmail dot com
2011-02-08 14:16 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: hjl.tools at gmail dot com @ 2011-01-18 14:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
Target Milestone|--- |4.4.6
Summary|ICE in tsubst_copy |[4.4/4.5/4.6 Regression]
|(triggered by dependency of |ICE in tsubst_copy
|return type on parameter |(triggered by dependency of
|pack size) |return type on parameter
| |pack size)
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-18 14:13:14 UTC ---
It is caused by revision 145013:
http://gcc.gnu.org/ml/gcc-cvs/2009-03/msg00520.html
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (3 preceding siblings ...)
2011-01-18 14:21 ` [Bug c++/47326] [4.4/4.5/4.6 Regression] " hjl.tools at gmail dot com
@ 2011-02-08 14:16 ` rguenth at gcc dot gnu.org
2011-02-08 14:36 ` redi at gcc dot gnu.org
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: rguenth at gcc dot gnu.org @ 2011-02-08 14:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-02-08 14:13:31 UTC ---
Calling this a regression is interesting. GCC 4.3 rejects the code:
> /space/rguenther/install/gcc-4.3.5/bin/g++ -S t.ii -std=c++0x
../src/simple-tests/bug-gcc-ICE-return_type_depends_on_variadic_size.cpp:7:
error: expected initializer before '->' token
../src/simple-tests/bug-gcc-ICE-return_type_depends_on_variadic_size.cpp: In
function 'int main()':
../src/simple-tests/bug-gcc-ICE-return_type_depends_on_variadic_size.cpp:12:
error: 'f' was not declared in this scope
it remains to be stated whether the code is valid or not, ICEing instead
of rejecting it is a regression.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (4 preceding siblings ...)
2011-02-08 14:16 ` rguenth at gcc dot gnu.org
@ 2011-02-08 14:36 ` redi at gcc dot gnu.org
2011-02-16 13:39 ` [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] " dodji at gcc dot gnu.org
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: redi at gcc dot gnu.org @ 2011-02-08 14:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-02-08 14:30:36 UTC ---
The code is valid C++0x (so the summary should include [C++0x])
It doesn't ICE if sizeof...(_ARGS) is used instead of sizeof...(args), or if
the sizeof... expression occurs in the function body rather than the
trailing-return-type
e.g this compiles:
template <int> struct A { };
template <typename... _ARGS>
auto f (_ARGS... args) -> A<sizeof...(_ARGS)> {
return {};
}
int main() {
f(1,2);
}
and so does this:
template <int> struct A { };
template <typename... _ARGS>
A<2> f (_ARGS... args) {
return A<sizeof...(args)>{};
}
int main() {
f(1,2);
}
but not this:
template <int> struct A { };
template <typename... _ARGS>
auto f (_ARGS... args) -> A<sizeof...(args)> {
return {};
}
int main() {
f(1,2);
}
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (5 preceding siblings ...)
2011-02-08 14:36 ` redi at gcc dot gnu.org
@ 2011-02-16 13:39 ` dodji at gcc dot gnu.org
2011-02-16 16:31 ` dodji at gcc dot gnu.org
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-02-16 13:39 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
Dodji Seketeli <dodji at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |dodji at gcc dot gnu.org
|gnu.org |
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (6 preceding siblings ...)
2011-02-16 13:39 ` [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] " dodji at gcc dot gnu.org
@ 2011-02-16 16:31 ` dodji at gcc dot gnu.org
2011-02-16 20:45 ` dodji at gcc dot gnu.org
2011-02-16 21:09 ` dodji at gcc dot gnu.org
9 siblings, 0 replies; 11+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-02-16 16:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
--- Comment #10 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-02-16 16:30:22 UTC ---
Candidate patch posted to
http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01050.html
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (7 preceding siblings ...)
2011-02-16 16:31 ` dodji at gcc dot gnu.org
@ 2011-02-16 20:45 ` dodji at gcc dot gnu.org
2011-02-16 21:09 ` dodji at gcc dot gnu.org
9 siblings, 0 replies; 11+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-02-16 20:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
--- Comment #11 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-02-16 20:45:18 UTC ---
Author: dodji
Date: Wed Feb 16 20:45:15 2011
New Revision: 170222
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170222
Log:
PR c++/47326
gcc/cp/
PR c++/47326
* pt.c (tsubst_copy)<case SIZEOF_EXPR>: Ensure that even pack
expansion arguments are not evaluated.
gcc/testsuite/
PR c++/47326
* g++.dg/cpp0x/variadic106.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/variadic106.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/pt.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] ICE in tsubst_copy (triggered by dependency of return type on parameter pack size)
2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
` (8 preceding siblings ...)
2011-02-16 20:45 ` dodji at gcc dot gnu.org
@ 2011-02-16 21:09 ` dodji at gcc dot gnu.org
9 siblings, 0 replies; 11+ messages in thread
From: dodji at gcc dot gnu.org @ 2011-02-16 21:09 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47326
Dodji Seketeli <dodji at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #12 from Dodji Seketeli <dodji at gcc dot gnu.org> 2011-02-16 21:08:43 UTC ---
Fixed in trunk (4.6).
^ permalink raw reply [flat|nested] 11+ messages in thread
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2011-01-17 8:02 [Bug c++/47326] New: ICE in tsubst_copy (triggered by dependency of return type on parameter pack size) schmidt-thieme at ismll dot de
2011-01-17 11:31 ` [Bug c++/47326] " paolo.carlini at oracle dot com
2011-01-17 16:03 ` hjl.tools at gmail dot com
2011-01-17 22:34 ` schmidt-thieme at ismll dot de
2011-01-18 14:21 ` [Bug c++/47326] [4.4/4.5/4.6 Regression] " hjl.tools at gmail dot com
2011-02-08 14:16 ` rguenth at gcc dot gnu.org
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2011-02-16 13:39 ` [Bug c++/47326] [4.4/4.5/4.6 Regression][C++0x] " dodji at gcc dot gnu.org
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