diff --git a/src/msph/sphophi.c b/src/msph/sphophi.c
index 59eacdb..0a629b5 100644
--- a/src/msph/sphophi.c
+++ b/src/msph/sphophi.c
@@ -456,8 +456,8 @@ msph_tree_sphophi_prebind(struct spho_scope *sc,
 				return (-1);
 			}
 
-			if ((ret = spho_scope_prebind_tp_op(sc, NOM(name), op))
-			    == -1) {
+			if ((ret = spho_scope_prebind_tp_op(sc,
+				    NOM(tpdef->name), op)) == -1) {
 				return (-1);
 			}
 		} else {
diff --git a/src/msph/tree.c b/src/msph/tree.c
index b50f0f7..87d99d7 100644
--- a/src/msph/tree.c
+++ b/src/msph/tree.c
@@ -30,7 +30,7 @@ static void	tree_parse_init(struct tree_parse *,
 		    struct msph_token_stream *, int);
 static int	tree_parse_next_token(struct tree_parse *);
 
-static ssize_t	tree_ind_fprint(FILE *, int, struct msph_tree *);
+static int	tree_ind_fprint(FILE *, int, struct msph_tree *);
 
 static void	free_the_tree(struct msph_tree *);
 
@@ -302,16 +302,21 @@ tree_parse_body(struct tree_parse *p, struct msph_tree *parent)
 			dir = tree_parse_assert(p, TREE(body));
 			break;
 		default:
-			break;
+			goto ret;
 		}
 
 		if (dir == NULL)
-			break;
+			goto err;
 
 		STAILQ_INSERT_TAIL(&body->head, dir, entries);
 	}
 
+ret:
 	return (body);
+err:
+	free_the_tree(TREE(body));
+
+	return (NULL);
 }
 
 
@@ -346,11 +351,10 @@ tree_parse_tpdef(struct tree_parse *p, struct msph_tree *parent)
 			if (name == NULL)
 				goto err;
 			STAILQ_INSERT_TAIL(&def->params, name, entries);
-
-			EXPECT_READ_NEXT(res, p, MSPH_TREE_TPDEF, goto err);
 		} while (CURR_TOKEN(p)->type == TOK_COMMA);
 
 		EXPECT_CURR_TOKEN(p, TOK_RBRAK, MSPH_TREE_TPDEF, goto err);
+		EXPECT_READ_NEXT(res, p, MSPH_TREE_TPDEF, goto err);
 	}
 	EXPECT_CURR_TOKEN(p, TOK_EQUALS, MSPH_TREE_TPDEF, goto err);
 
@@ -418,7 +422,7 @@ tree_parse_ident_extsize(struct tree_parse *p, struct msph_tree *parent,
 	TEXT(id)->pos = CURR_TOKEN(p)->pos;
 	DECOR_INIT(id);
 
-	if (SPHO_STRLCPY(id->str, CURR_TOKEN(p)->data.str, sizeof(id->str))
+	if (strlcpy(id->str, CURR_TOKEN(p)->data.str, sizeof(id->str))
 	    >= sizeof(id->str)) {
 		MSPH_ERR(CTX(p), MSPH_ERR_TREE_TOOLONG);
 		goto err;
@@ -988,7 +992,6 @@ tree_parse_tpexpr_atom(struct tree_parse *p, struct msph_tree *parent)
 		tp = NULL;
 	}
 
-	SPHO_DEBUG_PRINT("returning tp type=%x\n", TREE(tp)->type);
 	return (tp);
 }
 struct msph_tree_tpexpr *
@@ -1252,12 +1255,15 @@ tree_parse_trait(struct tree_parse *p, struct msph_tree *parent)
 	DECOR_INIT(trait);
 	trait->body = NULL;
 
+	EXPECT_READ_NEXT(res, p, MSPH_TREE_TRAIT, goto err);
+
 	if ((trait->body = tree_parse_body(p, TREE(trait))) == NULL)
 		goto err;
 
-	EXPECT_READ_NEXT(res, p, MSPH_TREE_TRAIT, goto err);
 	EXPECT_CURR_TOKEN(p, TOK_RBRACE, MSPH_TREE_TRAIT, goto err);
 
+	tree_parse_next_token(p);
+
 	return ((struct msph_tree_tpexpr *)trait);
 err:
 	free_the_tree(TREE(trait));
@@ -1322,7 +1328,6 @@ tree_parse_membdecl(struct tree_parse *p, struct msph_tree *parent)
 	if ((membd->name = tree_parse_namedecl(p, TREE(membd))) == NULL)
 		goto err;
 
-	EXPECT_READ_NEXT(res, p, MSPH_TREE_MEMBDECL, goto err);
 	EXPECT_CURR_TOKEN(p, TOK_COLON, MSPH_TREE_MEMBDECL,
 	    goto err);
 	EXPECT_READ_NEXT(res, p, MSPH_TREE_MEMBDECL, goto err);
@@ -1377,11 +1382,10 @@ free_the_tree(struct msph_tree *tree)
 #define MSPH_TREE_INDENT	"    "
 
 __attribute__((format(printf, 3, 4)))
-static ssize_t
+static int
 indent_fprintf(FILE *f, int indent, const char *fmt, ...)
 {
-	int res;
-	ssize_t ret;
+	int res, ret;
 	int i;
 	va_list ap;
 
@@ -1391,25 +1395,25 @@ indent_fprintf(FILE *f, int indent, const char *fmt, ...)
 	for (i = 0; i < indent; i++) {
 		res = fprintf(f, "%s", MSPH_TREE_INDENT);
 		if (res < 0) {
-			return ((ssize_t)res);
+			return (res);
 		}
-		ret += (ssize_t)res;
+		ret += res;
 	}
 
 	res = vfprintf(f, fmt, ap);
 	if (res < 0) {
-		return ((ssize_t)res);
+		return (res);
 	}
-	ret += (ssize_t)res;
+	ret += res;
 	va_end(ap);
 
 	return (ret);
 }
 
-static ssize_t
+static int
 tree_ind_fprint(FILE *f, int indent, struct msph_tree *tree)
 {
-	ssize_t ret, res;
+	int ret, res;
 	struct msph_tree_root *root;
 	struct msph_tree_unit *unit;
 	struct msph_tree_body *body;
@@ -1431,6 +1435,7 @@ tree_ind_fprint(FILE *f, int indent, struct msph_tree *tree)
 	struct msph_tree_paren *paren;
 	struct msph_tree_ident *ident;
 	struct msph_tree_tpexpr *tp;
+	struct msph_tree_namedecl *named;
 	const char *ident_kind;
 
 	ret = 0;
@@ -1519,6 +1524,13 @@ tree_ind_fprint(FILE *f, int indent, struct msph_tree *tree)
 			return (res);
 		}
 		ret += res;
+		STAILQ_FOREACH(named, &tpdef->params, entries) {
+			if ((res = tree_ind_fprint(f, indent+1, TREE(named)))
+			    < 0) {
+				return (res);
+			}
+			ret += res;
+		}
 		if ((res = tree_ind_fprint(f, indent+1, TREE(tpdef->tp))) < 0)
 			return (res);
 		ret += res;
diff --git a/src/spho/scope.c b/src/spho/scope.c
index 40a41a5..9f1b15c 100644
--- a/src/spho/scope.c
+++ b/src/spho/scope.c
@@ -128,6 +128,7 @@ spho_scope_nom_add(struct spho_scope *sc, const char *nomstr, size_t sz)
 		SPHO_SC_ERR(sc, SPHO_ERR_TOOBIG);
 		goto err;
 	}
+	nom->id = sc->ctx->nom_cnt++;
 
 	SLIST_INSERT_HEAD(&sc->noms, nom, entries);
 	sc->nom_cnt++;