[Bug c++/107615] Segfault on accessing to methods of optional class through member pointer

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107615

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

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

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With -W -Wall I get
<source>: In function 'int main()':
<source>:17:39: warning: 'aStr' is used uninitialized [-Wuninitialized]
   17 |     std::cout << (aClass->*aStr).value() << std::endl;;
      |                  ~~~~~~~~~~~~~~~~~~~~~^~
<source>:14:15: note: 'aStr' was declared here
   14 |     A::member aStr;
      |               ^~~~

The code is undefined because of the uninitialized variable.

Once you initialize it, the code works as expected:
    A::member aStr = &A::str;