diff --git a/psycopg/typecast_array.c b/psycopg/typecast_array.c
index 9cec95c0..a5a718ca 100644
--- a/psycopg/typecast_array.c
+++ b/psycopg/typecast_array.c
@@ -56,7 +56,7 @@ typecast_array_cleanup(const char **str, Py_ssize_t *len)
 #define ASCAN_TOKEN  3
 #define ASCAN_QUOTED 4
 
-static int
+RAISES_NEG static int
 typecast_array_tokenize(const char *str, Py_ssize_t strlength,
                         Py_ssize_t *pos, char** token,
                         Py_ssize_t *length, int *quotes)
@@ -202,7 +202,8 @@ typecast_array_scan(const char *str, Py_ssize_t strlength,
             if (obj == NULL) return -1;
 
             PyList_Append(array, obj);
-            Py_DECREF(obj);
+            TO_STATE(obj);
+            Py_CLEAR(obj);
         }
 
         else if (state == ASCAN_BEGIN) {
diff --git a/psycopg/typecast_binary.c b/psycopg/typecast_binary.c
index 3d09784f..795a9123 100644
--- a/psycopg/typecast_binary.c
+++ b/psycopg/typecast_binary.c
@@ -155,6 +155,7 @@ typecast_BINARY_cast(const char *s, Py_ssize_t l, PyObject *curs)
          * an easy format.
          */
         if (NULL == (buffer = psycopg_parse_hex(s, l, &len))) {
+            FAKE_RAISE();   /* issue davidmalcolm/gcc-python-plugin#75 */
             goto exit;
         }
     }
@@ -170,6 +171,7 @@ typecast_BINARY_cast(const char *s, Py_ssize_t l, PyObject *curs)
          * story.
          */
         if (NULL == (buffer = psycopg_parse_escape(s, l, &len))) {
+            FAKE_RAISE();   /* issue davidmalcolm/gcc-python-plugin#75 */
             goto exit;
         }
     }
diff --git a/psycopg/xid_type.c b/psycopg/xid_type.c
index ab6c33e2..4c1862fb 100644
--- a/psycopg/xid_type.c
+++ b/psycopg/xid_type.c
@@ -131,12 +131,12 @@ xid_init(xidObject *self, PyObject *args, PyObject *kwargs)
         }
     }
 
-    if (!(self->format_id = PyInt_FromLong(format_id))) { return -1; }
-    if (!(self->gtrid = Text_FromUTF8(gtrid))) { return -1; }
-    if (!(self->bqual = Text_FromUTF8(bqual))) { return -1; }
-    Py_INCREF(Py_None); self->prepared = Py_None;
-    Py_INCREF(Py_None); self->owner = Py_None;
-    Py_INCREF(Py_None); self->database = Py_None;
+    if (!(self->format_id = TO_STATE(PyInt_FromLong(format_id)))) { return -1; }
+    if (!(self->gtrid = TO_STATE(Text_FromUTF8(gtrid)))) { return -1; }
+    if (!(self->bqual = TO_STATE(Text_FromUTF8(bqual)))) { return -1; }
+    Py_INCREF(Py_None); self->prepared = TO_STATE(Py_None);
+    Py_INCREF(Py_None); self->owner = TO_STATE(Py_None);
+    Py_INCREF(Py_None); self->database = TO_STATE(Py_None);
 
     return 0;
 }