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* [Bug c++/99263] New: A qualified-id that denotes a destructor of a class type that is used as an operand of `typeid` is accepted by GCC
@ 2021-02-25 8:11 xmh970252187 at gmail dot com
2021-02-25 9:43 ` [Bug c++/99263] " redi at gcc dot gnu.org
2021-02-25 9:45 ` redi at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: xmh970252187 at gmail dot com @ 2021-02-25 8:11 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99263
Bug ID: 99263
Summary: A qualified-id that denotes a destructor of a class
type that is used as an operand of `typeid` is
accepted by GCC
Product: gcc
Version: 10.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: xmh970252187 at gmail dot com
Target Milestone: ---
````cpp
#include <iostream>
struct A{
~A(){}
};
int main(){
std::cout<< typeid(A::~A).name();
}
````
In this usage, A::~A should be an invalid operand of typeid, as per
[https://timsong-cpp.github.io/cppwp/n4861/expr.prim.id#2]
> An id-expression that denotes a non-static data member or non-static member function of a class can only be used:
>> as part of a class member access in which the object expression refers to the member's class57 or a class derived from that class, or
>> to form a pointer to member ([expr.unary.op]), or
>> if that id-expression denotes a non-static data member and it appears in an unevaluated operand.
None of the contexts listed in the above list is satisfied by this usage.
Hence, take the `A::~A` as an operand of `typeid` should be considered as an
invalid usage.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/99263] A qualified-id that denotes a destructor of a class type that is used as an operand of `typeid` is accepted by GCC
2021-02-25 8:11 [Bug c++/99263] New: A qualified-id that denotes a destructor of a class type that is used as an operand of `typeid` is accepted by GCC xmh970252187 at gmail dot com
@ 2021-02-25 9:43 ` redi at gcc dot gnu.org
2021-02-25 9:45 ` redi at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: redi at gcc dot gnu.org @ 2021-02-25 9:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99263
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-02-25
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug c++/99263] A qualified-id that denotes a destructor of a class type that is used as an operand of `typeid` is accepted by GCC
2021-02-25 8:11 [Bug c++/99263] New: A qualified-id that denotes a destructor of a class type that is used as an operand of `typeid` is accepted by GCC xmh970252187 at gmail dot com
2021-02-25 9:43 ` [Bug c++/99263] " redi at gcc dot gnu.org
@ 2021-02-25 9:45 ` redi at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: redi at gcc dot gnu.org @ 2021-02-25 9:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99263
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced (and corrected) testcase:
#include <typeinfo>
struct A{
~A(){}
};
int main(){
auto t = typeid(A::~A).name();
}
^ permalink raw reply [flat|nested] 3+ messages in thread
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2021-02-25 8:11 [Bug c++/99263] New: A qualified-id that denotes a destructor of a class type that is used as an operand of `typeid` is accepted by GCC xmh970252187 at gmail dot com
2021-02-25 9:43 ` [Bug c++/99263] " redi at gcc dot gnu.org
2021-02-25 9:45 ` redi at gcc dot gnu.org
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