[Bug c++/63364] GCC optimizer causing memory corruption

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63364

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
>    B(A const*const&aa):a(aa){}

>    B*b=new B(this);


There is a temporary variable being created there and it goes out of scope
after the statement is finished.   The reason is because this is not a lvalue,
prvalue.

Here is the quote from the standard:
In the body of a non-static (9.3) member function, the keyword this is a
prvalue expression whose value
is the address of the object for which the function is called.