Centralize workaround for Python 2.6's Py_DECREF.

Wrap/redefine Py_DECREF ourselves, avoiding the need for uses to care
about extra braces due to the fact that Python only started wrapping Py_DECREF
in 'do {} while (0)' after 2.6.

gdb/
2013-05-21  Pedro Alves  <palves@redhat.com>

	* python/py-utils.c (py_decref): Remove extra braces.
	(gdb_pymodule_addobject): Remove extra braces.
	* python-internal.h (gdb_Py_DECREF): New static inline function.
	(Py_DECREF): Redefine as calling gdb_Py_DECREF.

1 files changed, 2 insertions, 9 deletions

diff --git a/gdb/python/py-utils.c b/gdb/python/py-utils.c
index e78dee0..80bacf7 100644
--- a/gdb/python/py-utils.c
+++ b/gdb/python/py-utils.c
@@ -31,12 +31,8 @@ py_decref (void *p)
 {
   PyObject *py = p;
 
-  /* Note that we need the extra braces in this 'if' to avoid a
-     warning from gcc.  */
   if (py)
-    {
-      Py_DECREF (py);
-    }
+    Py_DECREF (py);
 }
 
 /* Return a new cleanup which will decrement the Python object's
@@ -443,9 +439,6 @@ gdb_pymodule_addobject (PyObject *module, const char *name, PyObject *object)
   Py_INCREF (object);
   result = PyModule_AddObject (module, name, object);
   if (result < 0)
-    {
-      /* Python 2.6 did not wrap Py_DECREF in do { } while (0);.  */
-      Py_DECREF (object);
-    }
+    Py_DECREF (object);
   return result;
 }