2 files changed, 4 insertions(+), 1 deletions(-)

M include/util.h
M src/object/object.c

@@ 108,6 108,9 @@ d_printf(char *fmt, ...);
 int
 v_printf(char *fmt, ...);
 
+/* a_printf: assert and print as appropriate if there is an error. */
+#define a_printf(expr, ...) if (!expr) { fprintf(stderr, __VA_ARGS__); assert(false); }
+
 struct error;
 
 struct error *

@@ 468,7 468,7 @@ getorcreatestruct(struct object *obj, struct ast_type *t, struct state *s)
 		return v;
 	}
 	struct ast_type *complete = ast_type_struct_complete(t, state_getext(s));
-	assert(complete);
+	a_printf(complete, "%s is incomplete\n", ast_type_str(t));
 	v = value_struct_create(complete);
 	object_assign(obj, v);
 	return v;