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* [Bug c++/100708] New: dynamic_cast can convert xvalue to lvalue
@ 2021-05-20 20:18 rs2740 at gmail dot com
2021-05-20 20:22 ` [Bug c++/100708] " redi at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: rs2740 at gmail dot com @ 2021-05-20 20:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100708
Bug ID: 100708
Summary: dynamic_cast can convert xvalue to lvalue
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: rs2740 at gmail dot com
Target Milestone: ---
GCC accepts
struct A { virtual ~A() {}; };
struct B : A {} b;
void g ()
{
dynamic_cast<B&>(static_cast<A&&>(b));
}
[expr.dynamic.cast]/2 says that for dynamic_cast<T>(v):
If T is an lvalue reference type, v shall be an lvalue of a complete class
type, and the result is an lvalue of the type referred to by T.
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug c++/100708] dynamic_cast can convert xvalue to lvalue
2021-05-20 20:18 [Bug c++/100708] New: dynamic_cast can convert xvalue to lvalue rs2740 at gmail dot com
@ 2021-05-20 20:22 ` redi at gcc dot gnu.org
0 siblings, 0 replies; 2+ messages in thread
From: redi at gcc dot gnu.org @ 2021-05-20 20:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100708
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-05-20
Ever confirmed|0 |1
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-05-20 20:18 [Bug c++/100708] New: dynamic_cast can convert xvalue to lvalue rs2740 at gmail dot com
2021-05-20 20:22 ` [Bug c++/100708] " redi at gcc dot gnu.org
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