decl.c (gfc_match_function_decl): Correctly error out in case of omitted function...

decl.c (gfc_match_function_decl): Correctly error out in case of omitted function argument list.

fortran/
* decl.c (gfc_match_function_decl): Correctly error out in case of
omitted function argument list.
testsuite/
* gfortran.dg/func_decl_1.f90: New.
* gfortran.dg/array_alloc_1.f90: Fix wrong function declaration.
* gfortran.dg/array_alloc_2.f90: Likewise.
* gfortran.dg/char_result_8.f90: Likewise.
* gfortran.dg/dup_save_1.f90: Likewise.
* gfortran.dg/dup_save_2.f90: Likewise.
* gfortran.dg/f2c_6.f90: Likewise.
* gfortran.dg/f2c_7.f90: Likewise.
* gfortran.dg/func_result_2.f90: Likewise.
* gfortran.fortran-torture/execute/pr23373-2.f90: Likewise.

From-SVN: r109451