Make sure to set these values to NULL, so that if we release an object (knowingly or not) twice then we do not fault by referencing unallocated memory.

This commit was SVN r21672.

orte/runtime/orte_globals.c

@@ -467,39 +467,48 @@ static void orte_app_context_destructor(orte_app_context_t* app_context)
 {
     if (NULL != app_context->app) {
         free (app_context->app);
+        app_context->app = NULL;
     }
     
     /* argv and env lists created by util/argv copy functions */
     if (NULL != app_context->argv) {
         opal_argv_free(app_context->argv);
+        app_context->argv = NULL;
     }
     
     if (NULL != app_context->env) {
         opal_argv_free(app_context->env);
+        app_context->env = NULL;
     }
     
     if (NULL != app_context->cwd) {
         free (app_context->cwd);
+        app_context->cwd = NULL;
     }
     
     if (NULL != app_context->hostfile) {
         free(app_context->hostfile);
+        app_context->hostfile = NULL;
     }
     
     if (NULL != app_context->add_hostfile) {
         free(app_context->add_hostfile);
+        app_context->add_hostfile = NULL;
     }
     
     if (NULL != app_context->add_host) {
         opal_argv_free(app_context->add_host);
+        app_context->add_host = NULL;
     }
     
     if (NULL != app_context->dash_host) {
         opal_argv_free(app_context->dash_host);
+        app_context->dash_host = NULL;
     }
     
     if (NULL != app_context->prefix_dir) {
         free(app_context->prefix_dir);
+        app_context->prefix_dir = NULL;
     }
     
     app_context->preload_binary = false;
@@ -507,14 +516,17 @@ static void orte_app_context_destructor(orte_app_context_t* app_context)
 
     if(NULL != app_context->preload_files) {
         free(app_context->preload_files);
+        app_context->preload_files = NULL;
     }
     
     if(NULL != app_context->preload_files_dest_dir) {
         free(app_context->preload_files_dest_dir);
+        app_context->preload_files_dest_dir = NULL;
     }
 
     if(NULL != app_context->preload_files_src_dir) {
         free(app_context->preload_files_src_dir);
+        app_context->preload_files_src_dir = NULL;
     }
 }
 
@@ -589,7 +601,10 @@ static void orte_job_destruct(orte_job_t* job)
     }
     OBJ_RELEASE(job->apps);
     
-    if (NULL != job->map) OBJ_RELEASE(job->map);
+    if (NULL != job->map) {
+        OBJ_RELEASE(job->map);
+        job->map = NULL;
+    }
     
     for (n=0; n < job->procs->size; n++) {
         if (NULL == (proc = (orte_proc_t*)opal_pointer_array_get_item(job->procs, n))) {
@@ -602,9 +617,11 @@ static void orte_job_destruct(orte_job_t* job)
 #if OPAL_ENABLE_FT == 1
     if (NULL != job->ckpt_snapshot_ref) {
         free(job->ckpt_snapshot_ref);
+        job->ckpt_snapshot_ref = NULL;
     }
     if (NULL != job->ckpt_snapshot_loc) {
         free(job->ckpt_snapshot_loc);
+        job->ckpt_snapshot_loc = NULL;
     }
 #endif
     
@@ -620,6 +637,7 @@ static void orte_job_destruct(orte_job_t* job)
                 break;
             }
         }
+        orte_job_data = NULL;
     }
 }
 
@@ -661,27 +679,32 @@ static void orte_node_destruct(orte_node_t* node)
     
     if (NULL != node->name) {
         free(node->name);
+        node->name = NULL;
     }
 
     if (NULL != node->alias) {
         opal_argv_free(node->alias);
+        node->alias = NULL;
     }
     
     if (NULL != node->daemon) {
         node->daemon->node = NULL;
         OBJ_RELEASE(node->daemon);
+        node->daemon = NULL;
     }
     
     for (i=0; i < node->procs->size; i++) {
         if (NULL != node->procs->addr[i]) {
             ((orte_proc_t*)(node->procs->addr[i]))->node = NULL;
             OBJ_RELEASE(node->procs->addr[i]);
+            node->procs->addr[i] = NULL;
         }
     }
     OBJ_RELEASE(node->procs);
     
     if (NULL != node->username) {
         free(node->username);
+        node->username = NULL;
     }
 }
 
@@ -723,18 +746,27 @@ static void orte_proc_destruct(orte_proc_t* proc)
     
     if (NULL != proc->slot_list) {
         free(proc->slot_list);
+        proc->slot_list = NULL;
     }
 
-    if (NULL != proc->node) OBJ_RELEASE(proc->node);
+    if (NULL != proc->node) {
+        OBJ_RELEASE(proc->node);
+        proc->node = NULL;
+    }
     
-    if (NULL != proc->rml_uri) free(proc->rml_uri);
+    if (NULL != proc->rml_uri) {
+        free(proc->rml_uri);
+        proc->rml_uri = NULL;
+    }
     
 #if OPAL_ENABLE_FT == 1
     if (NULL != proc->ckpt_snapshot_ref) {
         free(proc->ckpt_snapshot_ref);
+        proc->ckpt_snapshot_ref = NULL;
     }
     if (NULL != proc->ckpt_snapshot_loc) {
         free(proc->ckpt_snapshot_loc);
+        proc->ckpt_snapshot_loc = NULL;
     }
 #endif
 }
@@ -755,9 +787,11 @@ static void orte_attr_destruct(orte_attr_t *ptr)
 {
     if (NULL != ptr->name) {
         free(ptr->name);
+        ptr->name = NULL;
     }
     if (NULL != ptr->bytes) {
         free(ptr->bytes);
+        ptr->bytes = NULL;
     }
 }
 
@@ -779,6 +813,7 @@ static void orte_nid_destruct(orte_nid_t *ptr)
     
     if (NULL != ptr->name) {
         free(ptr->name);
+        ptr->name = NULL;
     }
     while (NULL != (item = opal_list_remove_first(&ptr->attrs))) {
         OBJ_RELEASE(item);
@@ -859,6 +894,7 @@ static void orte_job_map_destruct(orte_job_map_t* map)
     for (i=0; i < map->nodes->size; i++) {
         if (NULL != map->nodes->addr[i]) {
             OBJ_RELEASE(map->nodes->addr[i]);
+            map->nodes->addr[i] = NULL;
         }
     }
     OBJ_RELEASE(map->nodes);
@@ -889,6 +925,7 @@ static void orte_regex_node_destruct(orte_regex_node_t *ptr)
 {
     if (NULL != ptr->prefix) {
         free(ptr->prefix);
+        ptr->prefix = NULL;
     }
     OBJ_DESTRUCT(&ptr->suffix);
     OBJ_DESTRUCT(&ptr->nodes);