Fix indentation for printing Fortran types with pointers

Printing the prefix "PTR TO -> (" resp. "REF TO ->(" ignored the active
indentation level.  This caused inconsistent appearance of user-defined
Fortran types containing pointers.  Fix by using "fprintfi_filtered" with the
current indentation level for outputting the prefix string.  Add test case
ptr-indentation.

Example using 'ptype' on object of type:
  type TypeWithPointer
    integer i
    integer, pointer:: p
  end type TypeWithPointer

Before:
  type = Type typewithpointer
      integer(kind=4) :: i
  PTR TO -> ( integer(kind=4) :: p)
  End Type typewithpointer

After:
  type = Type typewithpointer
      integer(kind=4) :: i
      PTR TO -> ( integer(kind=4) :: p)
  End Type typewithpointer

gdb/ChangeLog

@@ -1,3 +1,10 @@
+2017-09-08  Frank Penczek  <frank.penczek@intel.com>
+            Christoph Weinmann  <christoph.t.weinmann@intel.com>
+            Bernhard Heckel  <bernhard.heckel@intel.com>
+
+	* f-typeprint.c (f_type_print_base): Use fprintfi_filtered
+	to maintain proper indentation when printing pointers/refs.
+
 2017-09-07  Joel Brobecker  <brobecker@adacore.com>
 
 	GDB 8.0.1 released.

gdb/f-typeprint.c

@@ -314,13 +314,13 @@ f_type_print_base (struct type *type, struct ui_file *stream, int show,
       break;
 
     case TYPE_CODE_PTR:
-      fprintf_filtered (stream, "PTR TO -> ( ");
-      f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
+      fprintfi_filtered (level, stream, "PTR TO -> ( ");
+      f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0);
       break;
 
     case TYPE_CODE_REF:
-      fprintf_filtered (stream, "REF TO -> ( ");
-      f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
+      fprintfi_filtered (level, stream, "REF TO -> ( ");
+      f_type_print_base (TYPE_TARGET_TYPE (type), stream, show, 0);
       break;
 
     case TYPE_CODE_VOID:

gdb/testsuite/ChangeLog

@@ -1,3 +1,10 @@
+2017-09-08  Frank Penczek  <frank.penczek@intel.com>
+            Christoph Weinmann  <christoph.t.weinmann@intel.com>
+            Bernhard Heckel  <bernhard.heckel@intel.com>
+
+	* gdb.fortran/ptr-indentation.f90: New file.
+	* gdb.fortran/ptr-indentation.exp: New file.
+
 2017-09-05  Tom Tromey  <tom@tromey.com>
 
 	PR gdb/22010:

gdb/testsuite/gdb.fortran/ptr-indentation.exp

@@ -0,0 +1,41 @@
+# Copyright 2017 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+if {[skip_fortran_tests]} { return -1 }
+
+standard_testfile .f90
+load_lib fortran.exp
+
+if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug f90}]} {
+    return -1
+}
+
+if {![runto MAIN__]} then {
+    untested "couldn't run to breakpoint MAIN__"
+    return -1
+}
+
+set int [fortran_int4]
+set real [fortran_real4]
+
+gdb_breakpoint [gdb_get_line_number "BP1"]
+gdb_continue_to_breakpoint "BP1"
+
+# Check the indentation when using ptype on pointers in user-defined types.
+gdb_test "ptype tinsta" \
+  [multi_line "type = Type tuserdef" \
+              "    $int :: i" \
+              "    PTR TO -> \\( $real :: ptr\\)" \
+              "End Type tuserdef"]

gdb/testsuite/gdb.fortran/ptr-indentation.f90

@@ -0,0 +1,30 @@
+! Copyright 2017 Free Software Foundation, Inc.
+!
+! This program is free software; you can redistribute it and/or modify
+! it under the terms of the GNU General Public License as published by
+! the Free Software Foundation; either version 3 of the License, or
+! (at your option) any later version.
+!
+! This program is distributed in the hope that it will be useful,
+! but WITHOUT ANY WARRANTY; without even the implied warranty of
+! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+! GNU General Public License for more details.
+!
+! You should have received a copy of the GNU General Public License
+! along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+program main
+  implicit none
+
+  type tuserdef
+    integer :: i
+    real, pointer :: ptr
+  end type tuserdef
+  real, target :: rval
+
+  type(tuserdef), target:: tinsta,tinstb,tinstc
+
+  tinsta%i = 4
+  tinsta%ptr => rval                        !BP1
+
+end program main