[Bug fortran/111837] [8/9/10/11/12/13/14 Regression] Out of bounds access with optimization inside io-implied-do-control

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111837

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anlauf at gcc dot gnu.org
           Priority|P3                          |P4
           Keywords|                            |wrong-code
            Summary|[8,9,10,11,12,13            |[8/9/10/11/12/13/14
                   |Regression] Out of bounds   |Regression] Out of bounds
                   |access with optimization    |access with optimization
                   |inside                      |inside
                   |io-implied-do-control       |io-implied-do-control
      Known to fail|                            |8.5.0
      Known to work|                            |7.5.0
   Target Milestone|---                         |11.5
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2023-10-16

--- Comment #1 from anlauf at gcc dot gnu.org ---
Confirmed.

This is a frontend-optimization bug.

Workaround: compile with -fno-frontend-optimize .