[Bug tree-optimization/110129] Possible wrong-code on -O2 and above (affecting versions from GCC-10.1 onward)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110129

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-06-05

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So in C++, it is required that forward process happens so GCC (due to the
-ffinite-loops option which is only enabled for -O2 and above) will remove
infinite loops for C++.

Now your goldbolt link is using the C++ front-end while your comment says using
C front-end. 

Once I change goldbolt to using C sources, the infinite loop is NOT removed as
expected (as -ffinite-loops is only enabled for C++).