[Bug fortran/116171] New: [OpenACC] 'acc declare' - 'readonly' modifier not stored in the module file

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116171

            Bug ID: 116171
           Summary: [OpenACC] 'acc declare' - 'readonly' modifier not
                    stored in the module file
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Keywords: missed-optimization, openacc
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: cltang at gcc dot gnu.org, tschwinge at gcc dot gnu.org
  Target Milestone: ---

The following commit added the 'readonly' modifier,
r14-9462-gddf852dac2abac  OpenACC 2.7: front-end support for readonly modifier

but as Thomas noted:

https://gcc.gnu.org/pipermail/gcc-patches/2024-March/647766.html

> But I realized another thing: don't we have to handle the 'readonly'
> modifier also in Fortran module files, that is, next to the OpenACC
> 'declare' 'copyin' handling in 'gcc/fortran/module.cc':
> 'AB_OACC_DECLARE_COPYIN' etc.?