[Bug tree-optimization/79992] accessing storage member of lambda via pointer with -no-pie causes the next function to overwrite the pointer's data

[yanai.eli11 at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79992

--- Comment #15 from Yanai <yanai.eli11 at gmail dot com> ---
> How so?  SRA has
> 
> >   [t1.cc:10:47] [t1.cc:10:47] D.36138.v = [t1.cc:24:29] &[t1.cc:24:20]
> > MEM[(const struct __lambda0 *)[t1.cc:17:42] &D.36138].__i;
> ...
> >   [t1.cc:17:42] D.36138 ={v} {CLOBBER};
> ...
> >   [t1.cc:32:11] _2 = [t1.cc:32:11] *_39;
> 
> so access *_39 after the clobber.  And _39 points to D.36138.
> 
> Clearly this is an invalid testcase.
> 
> static auto get_wrapped_number() {
>     return [i = 1] { return &i; };
> }
> 
> returns an address to automatic storage.

I got why the code is not a GCC bug:
`auto v = need_pie_2.get();`, does copy constructor,
and it copies the pointer from the object that is immediately after going to be
destructed.