diff -r a8735148dcf0 -r e9d804821c48 src/Opcodes.cpp
--- a/src/Opcodes.cpp	Mon Jul 30 22:30:38 2012 -0700
+++ b/src/Opcodes.cpp	Wed Aug 01 22:32:59 2012 -0700
@@ -248,9 +248,6 @@
           {
             Heap::Tenure tenure = (Heap::Tenure)pc[1];
             ArrayMap *map = ArrayMap::cast(code->map(READ_UINT32(pc + 1)));
-            fprintf(fp, "%s:", map->type()->innermost()->tag()
-                               ? map->type()->innermost()->tag()->chars()
-                               : "_");
             for (; map; map = map->contained()) {
                 Type *type = map->type();
                 fprintf(fp, "[%d]", type->elements());