Merge pull request flux-framework#1314 from milroy/issue-1260

Don't prune traversal by leaf vertex subplans

resource/traversers/dfu_impl.cpp

@@ -176,6 +176,14 @@ int dfu_impl_t::by_subplan (const jobmeta_t &meta,
     int saved_errno = errno;
     planner_multi_t *p = (*m_graph)[u].idata.subplans[s];
 
+    if (!p) {
+        // Subplan is null if u is a leaf.
+        // TODO: handle the unlikely case
+        // where the subplan is null for another
+        // reason
+        rc = 0;
+        goto done;
+    }
     if (resource.user_data.empty ()) {
         // If user_data is empty, no data is available to prune with.
         rc = 0;

t/data/resource/commands/advanced/cmds06.in

@@ -0,0 +1,2 @@
+match allocate @TEST_SRCDIR@/data/resource/jobspecs/issues/issue1260.yaml
+quit

t/data/resource/expected/advanced/006.R.out

@@ -0,0 +1,19 @@
+      ---------ssd0[1024:x]
+      ------------core0[1:x]
+      ------------core1[1:x]
+      ------------core2[1:x]
+      ------------core3[1:x]
+      ------------core4[1:x]
+      ------------core5[1:x]
+      ------------core6[1:x]
+      ------------core7[1:x]
+      ------------core8[1:x]
+      ------------core9[1:x]
+      ---------compute-01[1:x]
+      ------rack0[1:s]
+      ---compute0[1:s]
+INFO: =============================
+INFO: JOBID=1
+INFO: RESOURCES=ALLOCATED
+INFO: SCHEDULED AT=Now
+INFO: =============================