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* [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type
[not found] <bug-66844-4@http.gcc.gnu.org/bugzilla/>
@ 2015-07-16 16:52 ` jason at gcc dot gnu.org
2015-07-16 17:20 ` Casey at Carter dot net
` (2 subsequent siblings)
3 siblings, 0 replies; 4+ messages in thread
From: jason at gcc dot gnu.org @ 2015-07-16 16:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66844
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jason at gcc dot gnu.org
--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> ---
A function parameter of type void is ill-formed, but I'm not sure that the same
needs to apply to local parameters of a requires-expression.
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type
[not found] <bug-66844-4@http.gcc.gnu.org/bugzilla/>
2015-07-16 16:52 ` [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type jason at gcc dot gnu.org
@ 2015-07-16 17:20 ` Casey at Carter dot net
2015-07-16 20:55 ` jason at gcc dot gnu.org
2015-09-08 8:52 ` paolo.carlini at oracle dot com
3 siblings, 0 replies; 4+ messages in thread
From: Casey at Carter dot net @ 2015-07-16 17:20 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66844
--- Comment #2 from Casey Carter <Casey at Carter dot net> ---
If the intent is to allow parameters of void type - and I admit the wording of
5.1.4/5 is unclear as to exactly which of the rules of 8.3.5 are intended to
apply to the parameter-declaration-clause of a requires-expression - then this
program should be well-formed:
template <class T, class U>
concept bool Same = __is_same_as(T, U);
template <class T>
concept bool C =
requires (T t, void v) {
requires Same<decltype(t), decltype(v)>;
};
template <C>
constexpr bool is_c() { return true; }
static_assert(is_c<void>(), "");
int main() {}
which the compiler diagnoses with "error: invalid use of type ‘void’ in
parameter declaration".
>From gcc-bugs-return-492568-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Thu Jul 16 18:02:24 2015
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From: "hjl.tools at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/66898] [6 Regression] profiledbootstrap failure on x86
Date: Thu, 16 Jul 2015 18:02:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Status: RESOLVED
X-Bugzilla-Resolution: DUPLICATE
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Message-ID: <bug-66898-4-boa93E4JQS@http.gcc.gnu.org/bugzilla/>
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References: <bug-66898-4@http.gcc.gnu.org/bugzilla/>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?idf898
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
Target Milestone|--- |6.0
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Dup.
*** This bug has been marked as a duplicate of bug 66891 ***
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type
[not found] <bug-66844-4@http.gcc.gnu.org/bugzilla/>
2015-07-16 16:52 ` [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type jason at gcc dot gnu.org
2015-07-16 17:20 ` Casey at Carter dot net
@ 2015-07-16 20:55 ` jason at gcc dot gnu.org
2015-09-08 8:52 ` paolo.carlini at oracle dot com
3 siblings, 0 replies; 4+ messages in thread
From: jason at gcc dot gnu.org @ 2015-07-16 20:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66844
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Yes, one of those is a bug, I'm not sure which. :)
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type
[not found] <bug-66844-4@http.gcc.gnu.org/bugzilla/>
` (2 preceding siblings ...)
2015-07-16 20:55 ` jason at gcc dot gnu.org
@ 2015-09-08 8:52 ` paolo.carlini at oracle dot com
3 siblings, 0 replies; 4+ messages in thread
From: paolo.carlini at oracle dot com @ 2015-09-08 8:52 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66844
Paolo Carlini <paolo.carlini at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-09-08
CC|Casey at Carter dot net |
Blocks| |67491
Ever confirmed|0 |1
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67491
[Bug 67491] [meta-bug] concepts issues
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-09-08 8:52 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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[not found] <bug-66844-4@http.gcc.gnu.org/bugzilla/>
2015-07-16 16:52 ` [Bug c++/66844] [c++-concepts] Requires-expression parameter with void type jason at gcc dot gnu.org
2015-07-16 17:20 ` Casey at Carter dot net
2015-07-16 20:55 ` jason at gcc dot gnu.org
2015-09-08 8:52 ` paolo.carlini at oracle dot com
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