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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/63732] constexpr is not constant expression, when cast member data pointer to data parent type
Date: Tue, 04 Nov 2014 20:44:00 -0000 [thread overview]
Message-ID: <bug-63732-4-YROoaw0ScE@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-63732-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63732
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler@googlemail.
| |com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
I disagree with your interpretation. Note that in your code example for yyy
there is an effective C-cast or reinterpret_cast. This is so, because your are
attempting to convert an address to a pointer of member of type
Number ComplexProperty::*
to
PropertyBase ComplexProperty::*
Irrespective of the private base classes, this kind of pointer conversion is
not allowed without a reinterpret_cast, but reinterpret_casts are not valid in
constants expressions.
The conversion to xxx is valid, because there is no type change involved
(Number ComplexProperty::* is converted to Number ComplexProperty::*) and for
the out-of-class member ComplexProperty::m_members definition the code is
well-formed, because you do have an effective reinterpret_cast but not in a
place where a constant expression would be required.
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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug regression/61887] vect.exp UNRESOLVED tests
Date: Tue, 04 Nov 2014 20:52:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?ida887
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Indeed.
next prev parent reply other threads:[~2014-11-04 20:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-04 9:37 [Bug c++/63732] New: " pavel.kral at omsquare dot com
2014-11-04 20:44 ` daniel.kruegler at googlemail dot com [this message]
2014-11-04 21:37 ` [Bug c++/63732] " pavel.kral at omsquare dot com
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