gcc/testsuite/gfortran.dg/used_interface_ref.f90

   1 ! { dg-do run }
   2 ! Tests the fix for PR26393, in which an ICE would occur in trans-decl.c
   3 ! (gfc_get_symbol_decl) because anzKomponenten is not referenced in the
   4 ! interface for solveCConvert. The solution was to assert that the symbol
   5 ! is either referenced or in an interface body.
   6 !
   7 ! Based on the testcase in the PR.
   8 !
   9   MODULE MODULE_CONC
  10     INTEGER, SAVE :: anzKomponenten = 2
  11   END MODULE MODULE_CONC
  12
  13   MODULE MODULE_THERMOCALC
  14     INTERFACE
  15       FUNCTION solveCConvert ()
  16         USE MODULE_CONC, ONLY: anzKomponenten
  17         REAL :: solveCConvert(1:anzKomponenten)
  18         END FUNCTION solveCConvert
  19     END INTERFACE
  20   END MODULE MODULE_THERMOCALC
  21
  22   SUBROUTINE outDiffKoeff
  23     USE MODULE_CONC
  24     USE MODULE_THERMOCALC
  25     REAL :: buffer_conc(1:anzKomponenten)
  26     buffer_conc = solveCConvert ()
  27     if (any(buffer_conc .ne. (/(real(i), i = 1, anzKomponenten)/))) &
  28           STOP 1
  29   END SUBROUTINE outDiffKoeff
  30
  31   program missing_ref
  32     USE MODULE_CONC
  33     call outDiffKoeff
  34 ! Now set anzKomponenten to a value that would cause a segfault if
  35 ! buffer_conc and solveCConvert did not have the correct allocation
  36 ! of memory.
  37     anzKomponenten = 5000
  38     call outDiffKoeff
  39   end program missing_ref
  40
  41   FUNCTION solveCConvert ()
  42     USE MODULE_CONC, ONLY: anzKomponenten
  43     REAL :: solveCConvert(1:anzKomponenten)
  44     solveCConvert = (/(real(i), i = 1, anzKomponenten)/)
  45   END FUNCTION solveCConvert