[Bug fortran/100132] New: Optimization breaks pointer association

[jrfsousa at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100132

            Bug ID: 100132
           Summary: Optimization breaks pointer association
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jrfsousa at gmail dot com
  Target Milestone: ---

Created attachment 50622
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50622&action=edit
Fortran code showing problem

Hi All!

Pointer association is lost when compiling with -O1 or -O2, curiously not with
-O3 unless -fcheck=recursion is used

Seen on:

GNU Fortran (GCC) 11.0.1 20210417 (experimental)
GNU Fortran (GCC) 10.3.1 20210417
GNU Fortran (GCC) 9.3.1 20210417

Thank you very much.

Best regards,
José Rui