* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
@ 2011-11-27 3:05 ` joseph at codesourcery dot com
2011-11-27 12:50 ` tsoae at mail dot ru
` (6 subsequent siblings)
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From: joseph at codesourcery dot com @ 2011-11-27 3:05 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-11-26 23:11:11 UTC ---
Note that this usage is not valid in C1X.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
2011-11-27 3:05 ` [Bug c++/51316] " joseph at codesourcery dot com
@ 2011-11-27 12:50 ` tsoae at mail dot ru
2011-11-27 18:01 ` joseph at codesourcery dot com
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: tsoae at mail dot ru @ 2011-11-27 12:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
--- Comment #2 from Nikolka <tsoae at mail dot ru> 2011-11-27 08:37:37 UTC ---
> Note that this usage is not valid in C1X.
Could you explain?
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
2011-11-27 3:05 ` [Bug c++/51316] " joseph at codesourcery dot com
2011-11-27 12:50 ` tsoae at mail dot ru
@ 2011-11-27 18:01 ` joseph at codesourcery dot com
2011-12-28 20:38 ` paolo.carlini at oracle dot com
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: joseph at codesourcery dot com @ 2011-11-27 18:01 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-11-27 15:58:15 UTC ---
On Sun, 27 Nov 2011, tsoae at mail dot ru wrote:
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
>
> --- Comment #2 from Nikolka <tsoae at mail dot ru> 2011-11-27 08:37:37 UTC ---
> > Note that this usage is not valid in C1X.
>
> Could you explain?
See C1X 6.5.3.4 paragraph 1, "The _Alignof operator shall not be applied
to a function type or an incomplete type.". This is a constraint, so a
diagnostic is required. Thus, if C++ allows this case, the diagnostic
(which is in code shared between C and C++) must be appropriately
conditional on the language being compiled.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
` (2 preceding siblings ...)
2011-11-27 18:01 ` joseph at codesourcery dot com
@ 2011-12-28 20:38 ` paolo.carlini at oracle dot com
2011-12-28 22:26 ` tsoae at mail dot ru
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7 siblings, 0 replies; 9+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-12-28 20:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2011-12-28
AssignedTo|unassigned at gcc dot |paolo.carlini at oracle dot
|gnu.org |com
Ever Confirmed|0 |1
--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-12-28 20:24:44 UTC ---
On it.
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* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
` (3 preceding siblings ...)
2011-12-28 20:38 ` paolo.carlini at oracle dot com
@ 2011-12-28 22:26 ` tsoae at mail dot ru
2011-12-28 22:32 ` paolo.carlini at oracle dot com
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: tsoae at mail dot ru @ 2011-12-28 22:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
--- Comment #5 from Nikolka <tsoae at mail dot ru> 2011-12-28 22:06:18 UTC ---
> On it.
There is an active core issue about alignof:
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3309.html#1305
Probably, you should take into account the proposed resolution.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
` (4 preceding siblings ...)
2011-12-28 22:26 ` tsoae at mail dot ru
@ 2011-12-28 22:32 ` paolo.carlini at oracle dot com
2011-12-30 21:13 ` paolo at gcc dot gnu.org
2011-12-30 21:21 ` paolo.carlini at oracle dot com
7 siblings, 0 replies; 9+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-12-28 22:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-12-28 22:31:02 UTC ---
Yeah, just allow the types at issue, that was clarified in core/930 actually.
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
` (5 preceding siblings ...)
2011-12-28 22:32 ` paolo.carlini at oracle dot com
@ 2011-12-30 21:13 ` paolo at gcc dot gnu.org
2011-12-30 21:21 ` paolo.carlini at oracle dot com
7 siblings, 0 replies; 9+ messages in thread
From: paolo at gcc dot gnu.org @ 2011-12-30 21:13 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
--- Comment #7 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2011-12-30 21:11:24 UTC ---
Author: paolo
Date: Fri Dec 30 21:11:20 2011
New Revision: 182746
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182746
Log:
/c-family
2011-12-30 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/51316
* c-common.c (c_sizeof_or_alignof_type): In C++ allow for alignof
of array types with an unknown bound.
/testsuite
2011-12-30 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/51316
* g++.dg/cpp0x/alignof4.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/alignof4.C
Modified:
trunk/gcc/c-family/ChangeLog
trunk/gcc/c-family/c-common.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug c++/51316] alignof doesn't work with arrays of unknown bound
2011-11-26 20:32 [Bug c++/51316] New: alignof doesn't work with arrays of unknown bound tsoae at mail dot ru
` (6 preceding siblings ...)
2011-12-30 21:13 ` paolo at gcc dot gnu.org
@ 2011-12-30 21:21 ` paolo.carlini at oracle dot com
7 siblings, 0 replies; 9+ messages in thread
From: paolo.carlini at oracle dot com @ 2011-12-30 21:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51316
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.7.0
--- Comment #8 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-12-30 21:13:01 UTC ---
Fixed for 4.7.0.
^ permalink raw reply [flat|nested] 9+ messages in thread