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From: "ensadc at mailnesia dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/104752] New: `Concept auto(x)` should not be a valid function-style cast
Date: Wed, 02 Mar 2022 09:09:36 +0000 [thread overview]
Message-ID: <bug-104752-4@http.gcc.gnu.org/bugzilla/> (raw)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104752
Bug ID: 104752
Summary: `Concept auto(x)` should not be a valid function-style
cast
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ensadc at mailnesia dot com
CC: mpolacek at gcc dot gnu.org
Target Milestone: ---
https://godbolt.org/z/KbPMrbKsK
====
template<class T>
concept C = true;
auto x = auto(1); // valid (P0849R8)
auto y = C auto(1); // expect a error
====
The initializer of `y` should be an error, but is currently accepted by GCC.
[dcl.type.auto.deduct]:
> For an explicit type conversion ([expr.type.conv]), T is the specified type,
> which shall be auto.
Note that the specified type cannot be 'type-constraint auto'.
GCC does emit an error for `C<> auto(1)`.
next reply other threads:[~2022-03-02 9:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-02 9:09 ensadc at mailnesia dot com [this message]
2022-03-02 15:52 ` [Bug c++/104752] " mpolacek at gcc dot gnu.org
2022-03-10 16:23 ` cvs-commit at gcc dot gnu.org
2022-03-10 16:28 ` mpolacek at gcc dot gnu.org
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