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* [Bug c++/59435] New: sizeof...(T) as default value for an argument does not work
@ 2013-12-09 16:33 thomas.sanchz at gmail dot com
2013-12-09 19:21 ` [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor " paolo.carlini at oracle dot com
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: thomas.sanchz at gmail dot com @ 2013-12-09 16:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59435
Bug ID: 59435
Summary: sizeof...(T) as default value for an argument does not
work
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: thomas.sanchz at gmail dot com
Hi everybody,
I encountered something not supported in gcc from 4.7 to 4.9, but working in
clang from 3.2 (tested on gcc goldbot).
Here is the code:
template <typename... E>
struct T
{
T(unsigned int i = sizeof...(E)){} // does not compile
static constexpr unsigned int U = sizeof...(E);
T(unsigned int j, unsigned int i = U){} // compile
};
template <typename... T>
void test(int i = sizeof...(T)) // compile
{}
Invocation with "g++ -std=c++11 test.cpp" is enough to reproduce the bug.
Please let me know if you need more information.
Cheers,
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor does not work
2013-12-09 16:33 [Bug c++/59435] New: sizeof...(T) as default value for an argument does not work thomas.sanchz at gmail dot com
@ 2013-12-09 19:21 ` paolo.carlini at oracle dot com
2013-12-09 22:59 ` paolo at gcc dot gnu.org
2013-12-09 23:00 ` paolo.carlini at oracle dot com
2 siblings, 0 replies; 4+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-12-09 19:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59435
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2013-12-09
Assignee|unassigned at gcc dot gnu.org |paolo.carlini at oracle dot com
Target Milestone|--- |4.9.0
Ever confirmed|0 |1
--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
The problem is in cp_parser_cache_defarg as called by
cp_parser_parameter_declaration
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor does not work
2013-12-09 16:33 [Bug c++/59435] New: sizeof...(T) as default value for an argument does not work thomas.sanchz at gmail dot com
2013-12-09 19:21 ` [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor " paolo.carlini at oracle dot com
@ 2013-12-09 22:59 ` paolo at gcc dot gnu.org
2013-12-09 23:00 ` paolo.carlini at oracle dot com
2 siblings, 0 replies; 4+ messages in thread
From: paolo at gcc dot gnu.org @ 2013-12-09 22:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59435
--- Comment #2 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Mon Dec 9 22:59:33 2013
New Revision: 205836
URL: http://gcc.gnu.org/viewcvs?rev=205836&root=gcc&view=rev
Log:
/cp
2013-12-09 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/59435
* parser.c (cp_parser_cache_defarg): sizeof ... ( p ) can
occur in a default argument too.
/testsuite
2013-12-09 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/59435
* g++.dg/cpp0x/variadic-sizeof3.C: New.
Added:
trunk/gcc/testsuite/g++.dg/cpp0x/variadic-sizeof3.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/parser.c
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor does not work
2013-12-09 16:33 [Bug c++/59435] New: sizeof...(T) as default value for an argument does not work thomas.sanchz at gmail dot com
2013-12-09 19:21 ` [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor " paolo.carlini at oracle dot com
2013-12-09 22:59 ` paolo at gcc dot gnu.org
@ 2013-12-09 23:00 ` paolo.carlini at oracle dot com
2 siblings, 0 replies; 4+ messages in thread
From: paolo.carlini at oracle dot com @ 2013-12-09 23:00 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59435
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Assignee|paolo.carlini at oracle dot com |unassigned at gcc dot gnu.org
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Fixed for 4.9.0.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2013-12-09 16:33 [Bug c++/59435] New: sizeof...(T) as default value for an argument does not work thomas.sanchz at gmail dot com
2013-12-09 19:21 ` [Bug c++/59435] sizeof...(T) as default value for an argument in the constructor " paolo.carlini at oracle dot com
2013-12-09 22:59 ` paolo at gcc dot gnu.org
2013-12-09 23:00 ` paolo.carlini at oracle dot com
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