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* [Bug c++/33821] New: function with ambiguous covariant return-type is not rejected
@ 2007-10-19 20:42 peter dot pirkelbauer at tamu dot edu
2008-01-13 5:00 ` [Bug c++/33821] " bangerth at dealii dot org
0 siblings, 1 reply; 3+ messages in thread
From: peter dot pirkelbauer at tamu dot edu @ 2007-10-19 20:42 UTC (permalink / raw)
To: gcc-bugs
struct R1 {};
struct R2 : R1 {};
struct R3 : R1 {};
struct R4 : R2, R3 {};
struct A { virtual R1& foo(); };
struct B : virtual A { R2& foo(); };
struct C : virtual A { R3& foo(); };
struct D : B, C { R4& foo(); }; // should be rejected
R4 contains two subobjects of type R1. When D::foo is invoked in the context of
A (e.g.: in the following function bar) the cast from R4 to R1 is ambiguous.
Therefore D::foo should be rejected.
void bar(D& d)
{ A& a = d;
R1& res = a.foo();
}
--
Summary: function with ambiguous covariant return-type is not
rejected
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: peter dot pirkelbauer at tamu dot edu
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33821
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/33821] function with ambiguous covariant return-type is not rejected
2007-10-19 20:42 [Bug c++/33821] New: function with ambiguous covariant return-type is not rejected peter dot pirkelbauer at tamu dot edu
@ 2008-01-13 5:00 ` bangerth at dealii dot org
0 siblings, 0 replies; 3+ messages in thread
From: bangerth at dealii dot org @ 2008-01-13 5:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from bangerth at dealii dot org 2008-01-13 02:49 -------
Confirmed.
--
bangerth at dealii dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bangerth at dealii dot org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |accepts-invalid
Last reconfirmed|0000-00-00 00:00:00 |2008-01-13 02:49:14
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33821
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/33821] function with ambiguous covariant return-type is not rejected
[not found] <bug-33821-4@http.gcc.gnu.org/bugzilla/>
@ 2021-08-01 23:34 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-08-01 23:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33821
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2008-01-13 02:49:14 |2021-8-1
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Clang accepts this code too but both MSVC and ICC reject it.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-08-01 23:34 UTC | newest]
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2007-10-19 20:42 [Bug c++/33821] New: function with ambiguous covariant return-type is not rejected peter dot pirkelbauer at tamu dot edu
2008-01-13 5:00 ` [Bug c++/33821] " bangerth at dealii dot org
[not found] <bug-33821-4@http.gcc.gnu.org/bugzilla/>
2021-08-01 23:34 ` pinskia at gcc dot gnu.org
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