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* [Bug c++/53349] New: Internal compiler error with constexpr and recursive data type.
@ 2012-05-14 22:21 pkeir at dcs dot gla.ac.uk
2012-05-15 11:19 ` [Bug c++/53349] " daniel.kruegler at googlemail dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: pkeir at dcs dot gla.ac.uk @ 2012-05-14 22:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53349
Bug #: 53349
Summary: Internal compiler error with constexpr and recursive
data type.
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: pkeir@dcs.gla.ac.uk
Created attachment 27404
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27404
The file which causes the internal error.
Compiling the attached file will cause an internal compiler error in gcc 4.7.0
under 32-bit Ubuntu 12.04:
g++-4.7 -std=c++11 rec_constexpr.cpp
...
constfft.cpp:16:47: internal compiler error: in cxx_eval_indirect_ref, at
cp/semantics.c:7400
If the copy constructor of Foo is removed, it is clang 3.2 (trunk 156580) which
will then fail.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/53349] Internal compiler error with constexpr and recursive data type.
2012-05-14 22:21 [Bug c++/53349] New: Internal compiler error with constexpr and recursive data type pkeir at dcs dot gla.ac.uk
@ 2012-05-15 11:19 ` daniel.kruegler at googlemail dot com
2012-05-20 20:00 ` pinskia at gcc dot gnu.org
2013-08-11 22:08 ` paolo.carlini at oracle dot com
2 siblings, 0 replies; 4+ messages in thread
From: daniel.kruegler at googlemail dot com @ 2012-05-15 11:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53349
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler at
| |googlemail dot com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> 2012-05-15 10:53:22 UTC ---
I can confirm this for gcc 4.8.0 20120513 (experimental).
A current workaround is to replace the member declaration
constexpr Foo(const Foo<N-1> a) : m_a(a) {}
by
constexpr Foo(const Foo<N-1>& a) : m_a(a) {}
The following is a simplified form of the problem:
template<int N>
struct Foo {
constexpr Foo(const Foo<N-1> a) : m_a(a) {} // Line 3
constexpr Foo(const Foo<N> &a) : m_a(a.m_a) {}
Foo<N-1> m_a;
};
template <> struct Foo<0> {};
constexpr auto res = Foo<2>(Foo<1>(Foo<0>())); // Line 10
10| in constexpr expansion of 'Foo<2>(Foo<1>((*(const Foo<1>*)(&
Foo<1>((Foo<0>((* & Foo<0>())), Foo<0>()))))))'|
3| in constexpr expansion of '((Foo<2>*)this)->Foo<2>::m_a.Foo<N>::Foo<1>((* &
a))'|
10|internal compiler error: in cxx_eval_indirect_ref, at cp/semantics.c:7408|
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/53349] Internal compiler error with constexpr and recursive data type.
2012-05-14 22:21 [Bug c++/53349] New: Internal compiler error with constexpr and recursive data type pkeir at dcs dot gla.ac.uk
2012-05-15 11:19 ` [Bug c++/53349] " daniel.kruegler at googlemail dot com
@ 2012-05-20 20:00 ` pinskia at gcc dot gnu.org
2013-08-11 22:08 ` paolo.carlini at oracle dot com
2 siblings, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-05-20 20:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53349
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2012-05-20
Ever Confirmed|0 |1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-05-20 19:08:01 UTC ---
Confirmed.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/53349] Internal compiler error with constexpr and recursive data type
2012-05-14 22:21 [Bug c++/53349] New: Internal compiler error with constexpr and recursive data type pkeir at dcs dot gla.ac.uk
2012-05-15 11:19 ` [Bug c++/53349] " daniel.kruegler at googlemail dot com
2012-05-20 20:00 ` pinskia at gcc dot gnu.org
@ 2013-08-11 22:08 ` paolo.carlini at oracle dot com
2 siblings, 0 replies; 4+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-08-11 22:08 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53349
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Done.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2013-08-11 22:08 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-05-14 22:21 [Bug c++/53349] New: Internal compiler error with constexpr and recursive data type pkeir at dcs dot gla.ac.uk
2012-05-15 11:19 ` [Bug c++/53349] " daniel.kruegler at googlemail dot com
2012-05-20 20:00 ` pinskia at gcc dot gnu.org
2013-08-11 22:08 ` paolo.carlini at oracle dot com
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