Index: trunk/ippTools/src/stacktool.c
===================================================================
--- trunk/ippTools/src/stacktool.c	(revision 19256)
+++ trunk/ippTools/src/stacktool.c	(revision 19260)
@@ -520,4 +520,7 @@
     PS_ASSERT_PTR_NON_NULL(config, false);
 
+    // XXX require at least a stack id (add better search options)
+    PXOPT_LOOKUP_S64(stack_id, config->args, "-stack_id", true, false);
+
     psMetadata *where = psMetadataAlloc();
     PXOPT_COPY_S64(config->args, where, "-warp_id", "warp_id", "==");