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! { dg-do run }

! Tests the fix for PR26393, in which an ICE would occur in trans-decl.c

! (gfc_get_symbol_decl) because anzKomponenten is not referenced in the

! interface for solveCConvert. The solution was to assert that the symbol

! is either referenced or in an interface body.

!

! Based on the testcase in the PR.

!

  MODULE MODULE_CONC

    INTEGER, SAVE :: anzKomponenten = 2

  END MODULE MODULE_CONC

  MODULE MODULE_THERMOCALC

    INTERFACE

      FUNCTION solveCConvert ()

        USE MODULE_CONC, ONLY: anzKomponenten

        REAL :: solveCConvert(1:anzKomponenten)

        END FUNCTION solveCConvert

    END INTERFACE

  END MODULE MODULE_THERMOCALC

  SUBROUTINE outDiffKoeff

    USE MODULE_CONC

    USE MODULE_THERMOCALC

    REAL :: buffer_conc(1:anzKomponenten)

    buffer_conc = solveCConvert ()

    if (any(buffer_conc .ne. (/(real(i), i = 1, anzKomponenten)/))) &

          call abort ()

  END SUBROUTINE outDiffKoeff

  program missing_ref

    USE MODULE_CONC

    call outDiffKoeff

! Now set anzKomponenten to a value that would cause a segfault if

! buffer_conc and solveCConvert did not have the correct allocation

! of memory.

    anzKomponenten = 5000

    call outDiffKoeff

  end program missing_ref

  FUNCTION solveCConvert ()

    USE MODULE_CONC, ONLY: anzKomponenten

    REAL :: solveCConvert(1:anzKomponenten)

    solveCConvert = (/(real(i), i = 1, anzKomponenten)/)

  END FUNCTION solveCConvert

! { dg-final { cleanup-modules "module_conc module_thermocalc" } }