[Bug c++/112350] gcc is not triggering a dangling reference indicating stack use after return

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112350

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With optimization enabled and without -fsanitize=address  we get:

<source>: In function 'const int& foo1()':
<source>:12:18: warning: using a dangling pointer to 'x' [-Wdangling-pointer=]
   12 |     return s.get();
      |                  ^
<source>:9:9: note: 'x' declared here
    9 |     int x = 234;
      |         ^