[PATCH 3/6] Fortran: Ptype, print type extension.

[Tim Wiederhake <tim dot wiederhake at intel dot com>]

From: Bernhard Heckel <bernhard.heckel@intel.com>

Print base-class of an extended type when doing a ptype.

xxxx-yy-zz  Bernhard Heckel  <bernhard.heckel@intel.com>

gdb/ChangeLog:
	* gdb/f-typeprint.c (f_type_print_derivation_info): New function.
	(f_type_print_base): Print baseclass info.

gdb/testsuite/ChangeLog:
	* gdb.fortran/oop_extend_type.exp: Adapt expected results.


---
 gdb/f-typeprint.c                             | 31 ++++++++++++++++++++++++---
 gdb/testsuite/gdb.fortran/oop_extend_type.exp | 30 ++++++++++++++++++++------
 2 files changed, 51 insertions(+), 10 deletions(-)

diff --git a/gdb/f-typeprint.c b/gdb/f-typeprint.c
index 7dbe093..64b2f92 100644
--- a/gdb/f-typeprint.c
+++ b/gdb/f-typeprint.c
@@ -256,6 +256,26 @@ f_type_print_varspec_suffix (struct type *type, struct ui_file *stream,
     }
 }
 
+/* If TYPE is an extended type, then print out derivation information.
+
+   A typical output could look like this:
+   "Type, extends(point) :: waypoint"
+   "    Type point :: point"
+   "    real(kind=4) :: angle"
+   "End Type waypoint"
+ */
+
+static void
+f_type_print_derivation_info (struct type *type, struct ui_file *stream)
+{
+  /* Fortran doesn't support multiple inheritance.  */
+  int i = 0;
+
+  if (TYPE_N_BASECLASSES (type) > 0)
+    fprintf_filtered (stream, ", extends(%s) ::",
+		      type_name_no_tag (TYPE_BASECLASS (type, i)));
+}
+
 /* Print the name of the type (or the ultimate pointer target,
    function value or array element), or the description of a
    structure or union.
@@ -362,10 +382,15 @@ f_type_print_base (struct type *type, struct ui_file *stream, int show,
     case TYPE_CODE_STRUCT:
     case TYPE_CODE_UNION:
       if (TYPE_CODE (type) == TYPE_CODE_UNION)
-	fprintfi_filtered (level, stream, "Type, C_Union :: ");
+	fprintfi_filtered (level, stream, "Type, C_Union ::");
       else
-	fprintfi_filtered (level, stream, "Type ");
-      fputs_filtered (TYPE_TAG_NAME (type), stream);
+	fprintfi_filtered (level, stream, "Type");
+
+      if (show > 0)
+	f_type_print_derivation_info (type, stream);
+
+      fprintf_filtered (stream, " %s", TYPE_TAG_NAME (type));
+
       /* According to the definition,
          we only print structure elements in case show > 0.  */
       if (show > 0)
diff --git a/gdb/testsuite/gdb.fortran/oop_extend_type.exp b/gdb/testsuite/gdb.fortran/oop_extend_type.exp
index a880414..200ce7b 100644
--- a/gdb/testsuite/gdb.fortran/oop_extend_type.exp
+++ b/gdb/testsuite/gdb.fortran/oop_extend_type.exp
@@ -50,11 +50,23 @@ gdb_test "p wp%point" " = \\( coo = \\(1, 2, 1\\) \\)"
 gdb_test "p wp" " = \\( point = \\( coo = \\(1, 2, 1\\) \\), angle = 100 \\)"
 
 gdb_test "whatis wp" "type = Type waypoint"
-gdb_test "ptype wp" \
-  [multi_line "type = Type waypoint" \
+set output_pass [multi_line "type = Type, extends\\(point\\) :: waypoint" \
               "    Type point :: point" \
               "    $real :: angle" \
               "End Type waypoint"]
+set output_kfail [multi_line "type = Type waypoint" \
+              "    Type point :: point" \
+              "    $real :: angle" \
+              "End Type waypoint"]
+set test "ptype wp"
+gdb_test_multiple $test %test {
+    -re "$output_pass\r\n$gdb_prompt $" {
+      pass "$test"
+    }
+    -re "$output_kfail\r\n$gdb_prompt $" {
+      kfail "gcc/49475" "$test"
+    }
+}
 set test "ptype wp%coo"
 gdb_test_multiple "$test" "$test" {
     -re "$real \\(3\\)\r\n$gdb_prompt $" {
@@ -80,11 +92,15 @@ gdb_test "p wp_vla(1)%point" " = \\( coo = \\(10, 12, 10\\) \\)"
 gdb_test "p wp_vla(1)" " = \\( point = \\( coo = \\(10, 12, 10\\) \\), angle = 101 \\)"
 
 gdb_test "whatis wp_vla" "type = Type waypoint \\(3\\)"
-gdb_test "ptype wp_vla" \
-  [multi_line "type = Type waypoint" \
-              "    Type point :: point" \
-              "    $real :: angle" \
-              "End Type waypoint \\(3\\)"]
+set test "ptype wp_vla"
+gdb_test_multiple $test %test {
+    -re "$output_pass \\(3\\)\r\n$gdb_prompt $" {
+      pass "$test"
+    }
+    -re "$output_kfail \\(3\\)\r\n$gdb_prompt $" {
+      kfail "gcc/49475" "$test"
+    }
+}
 set test "ptype wp_vla(1)%coo"
 gdb_test_multiple "$test" "$test" {
     -re "$real \\(3\\)\r\n$gdb_prompt $" {
-- 
2.7.4