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* [Bug c++/51305] New: [C++11][constexpr] noexcept-specifier overconstraints constexpr functions
@ 2011-11-25 17:45 daniel.kruegler at googlemail dot com
2011-11-25 20:19 ` [Bug c++/51305] " paolo.carlini at oracle dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: daniel.kruegler at googlemail dot com @ 2011-11-25 17:45 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51305
Bug #: 51305
Summary: [C++11][constexpr] noexcept-specifier overconstraints
constexpr functions
Classification: Unclassified
Product: gcc
Version: 4.7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: daniel.kruegler@googlemail.com
CC: jason@gcc.gnu.org
gcc 4.7.0 20111119 (experimental) in C++11 mode with -Wall rejects the
following code:
//-------
constexpr bool ok() noexcept
{
typedef int type;
return true;
}
constexpr auto x = ok();
//-------
the error being:
"
main.cpp||In function 'constexpr bool ok()':|
main.cpp|5|error: body of constexpr function 'constexpr bool ok()' not a
return-statement|
main.cpp|7|error: 'constexpr bool ok()' called in a constant expression
"
The stringency becomes activated with the addition of the noexcept-specifier to
the constexpr function.
Here is a more advanced test set that should be accepted after the fix of this
issue:
//-------
namespace n { void foo(); }
constexpr bool ok() noexcept
{
typedef bool some;
using other = int;
using namespace n;
using n::foo;
;
static_assert(!false, "");
return true;
}
constexpr auto x = ok();
template<bool>
struct C{};
C<ok()> c;
//-------
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/51305] [C++11][constexpr] noexcept-specifier overconstraints constexpr functions
2011-11-25 17:45 [Bug c++/51305] New: [C++11][constexpr] noexcept-specifier overconstraints constexpr functions daniel.kruegler at googlemail dot com
@ 2011-11-25 20:19 ` paolo.carlini at oracle dot com
2011-12-21 1:23 ` paolo.carlini at oracle dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-11-25 20:19 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51305
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2011-11-25
Ever Confirmed|0 |1
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-11-25 19:24:12 UTC ---
Doh! At some point I also notices something very weird going on with typedefs
but didn't pay enough attention to it.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/51305] [C++11][constexpr] noexcept-specifier overconstraints constexpr functions
2011-11-25 17:45 [Bug c++/51305] New: [C++11][constexpr] noexcept-specifier overconstraints constexpr functions daniel.kruegler at googlemail dot com
2011-11-25 20:19 ` [Bug c++/51305] " paolo.carlini at oracle dot com
@ 2011-12-21 1:23 ` paolo.carlini at oracle dot com
2011-12-21 16:30 ` paolo.carlini at oracle dot com
2011-12-21 16:38 ` paolo at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-12-21 1:23 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51305
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
AssignedTo|unassigned at gcc dot |paolo.carlini at oracle dot
|gnu.org |com
Target Milestone|--- |4.7.0
--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-12-21 01:14:51 UTC ---
On it.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/51305] [C++11][constexpr] noexcept-specifier overconstraints constexpr functions
2011-11-25 17:45 [Bug c++/51305] New: [C++11][constexpr] noexcept-specifier overconstraints constexpr functions daniel.kruegler at googlemail dot com
2011-11-25 20:19 ` [Bug c++/51305] " paolo.carlini at oracle dot com
2011-12-21 1:23 ` paolo.carlini at oracle dot com
@ 2011-12-21 16:30 ` paolo.carlini at oracle dot com
2011-12-21 16:38 ` paolo at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-12-21 16:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51305
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-12-21 16:29:20 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/51305] [C++11][constexpr] noexcept-specifier overconstraints constexpr functions
2011-11-25 17:45 [Bug c++/51305] New: [C++11][constexpr] noexcept-specifier overconstraints constexpr functions daniel.kruegler at googlemail dot com
` (2 preceding siblings ...)
2011-12-21 16:30 ` paolo.carlini at oracle dot com
@ 2011-12-21 16:38 ` paolo at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: paolo at gcc dot gnu.org @ 2011-12-21 16:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51305
--- Comment #3 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2011-12-21 16:28:19 UTC ---
Author: paolo
Date: Wed Dec 21 16:28:08 2011
New Revision: 182594
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182594
Log:
/cp
2011-12-21 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/51305
* semantics.c (massage_constexpr_body): Reorder conditionals, make
sure a BIND_EXPR embedded in a MUST_NOT_THROW_EXPR is handled.
/testsuite
2011-12-21 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/51305
* g++.dg/cpp0x/constexpr-noexcept6.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-noexcept6.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-12-21 16:30 UTC | newest]
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2011-11-25 17:45 [Bug c++/51305] New: [C++11][constexpr] noexcept-specifier overconstraints constexpr functions daniel.kruegler at googlemail dot com
2011-11-25 20:19 ` [Bug c++/51305] " paolo.carlini at oracle dot com
2011-12-21 1:23 ` paolo.carlini at oracle dot com
2011-12-21 16:30 ` paolo.carlini at oracle dot com
2011-12-21 16:38 ` paolo at gcc dot gnu.org
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