[PATCH] gdb/testsuite/gdb.python: add test cases for anonymous members fix

[Li Yu <raise dot sail at gmail dot com>]

gdb.Type.fields() missed handling for anonymous members, I just sent a
patch to fix it, this patch adds some cases to test it.

See http://sourceware.org/ml/gdb-patches/2011-10/msg00218.html

Signed-off-by: Li Yu <raise.sail@gmail.com>

gdb/testsuite/gdb.python/:
2011-10-8  Li Yu  <raise.sail@gmail.com>

       * py-type.c/py-type.exp: Add test cases for bugfix of anonymous
members handling

 py-type.c   |   30 +++++++++++++++++++++++++++++-
 py-type.exp |   18 ++++++++++++++++++
 2 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/gdb/testsuite/gdb.python/py-type.c b/gdb/testsuite/gdb.python/py-type.c
index b0dcc9d..2f24bec 100644
--- a/gdb/testsuite/gdb.python/py-type.c
+++ b/gdb/testsuite/gdb.python/py-type.c
@@ -47,6 +47,32 @@ enum E
 { v1, v2, v3
 };
 
+struct A
+{
+	int a;
+	union {
+		int b0;
+		int b1;
+		union {
+			int bb0;
+			int bb1;
+			union {
+				int bbb0;
+				int bbb1;
+			};
+		};
+	};
+	int c;
+	union {
+		union {
+			int dd0;
+			int dd1;
+		};
+		int d2;
+		int d3;
+	};
+};
+
 int
 main ()
 {
@@ -66,6 +92,8 @@ main ()
   st.b = 5;
 
   e = v2;
-  
+
+  struct A a;
+
   return 0;      /* break to inspect struct and array.  */
 }
diff --git a/gdb/testsuite/gdb.python/py-type.exp b/gdb/testsuite/gdb.python/py-type.exp
index ec86586..786ef06 100644
--- a/gdb/testsuite/gdb.python/py-type.exp
+++ b/gdb/testsuite/gdb.python/py-type.exp
@@ -86,6 +86,24 @@ proc test_fields {lang} {
   gdb_test "python print fields\[0\].name" "a" "Check structure field a name"
   gdb_test "python print fields\[1\].name" "b" "Check structure field b name"
 
+  # Test fields usage for anonymous members of structs/union.
+  gdb_py_test_silent_cmd "print a" "print value" 1
+  gdb_py_test_silent_cmd "python a = gdb.history (0)" "get value from history" 1
+  gdb_py_test_silent_cmd "python fields = a.type.fields()" "get fields" 1
+  gdb_test "python print len(fields)" "12" "Check number of fields"
+  gdb_test "python print fields\[0\].name" "a" "Check structure field a name"
+  gdb_test "python print fields\[1\].name" "b0" "Check structure field b0 name"
+  gdb_test "python print fields\[2\].name" "b1" "Check structure field b1 name"
+  gdb_test "python print fields\[3\].name" "bb0" "Check structure field bb0 name"
+  gdb_test "python print fields\[4\].name" "bb1" "Check structure field bb1 name"
+  gdb_test "python print fields\[5\].name" "bbb0" "Check structure field bbb0 name"
+  gdb_test "python print fields\[6\].name" "bbb1" "Check structure field bbb1 name"
+  gdb_test "python print fields\[7\].name" "c" "Check structure field c name"
+  gdb_test "python print fields\[8\].name" "dd0" "Check structure field dd0 name"
+  gdb_test "python print fields\[9\].name" "dd1" "Check structure field dd1 name"
+  gdb_test "python print fields\[10\].name" "d2" "Check structure field d1 name"
+  gdb_test "python print fields\[11\].name" "d3" "Check structure field d2 name"
+
   # Test Python mapping behavior of gdb.Type for structs/classes
   gdb_test "python print len(st.type)" "2" "Check number of fields"
   gdb_test "python print st.type\['a'\].name" "a" "Check fields lookup by name"