score: Add debug support to chains

This helps to detect

 * double insert, append, prepend errors, and
 * get from empty chain errors.

5 files changed, 9 insertions, 1 deletions

diff --git a/cpukit/libcsupport/src/malloc_deferred.c b/cpukit/libcsupport/src/malloc_deferred.c
index 962ae3e81f..f37b852cba 100644
--- a/cpukit/libcsupport/src/malloc_deferred.c
+++ b/cpukit/libcsupport/src/malloc_deferred.c
@@ -127,9 +127,13 @@ void *rtems_heap_allocate_aligned_with_boundary(
 void _Malloc_Deferred_free( void *p )
 {
   rtems_interrupt_lock_context lock_context;
+  rtems_chain_node *node;
+
+  node = (rtems_chain_node *) p;
 
   rtems_interrupt_lock_acquire( &_Malloc_GC_lock, &lock_context );
-  rtems_chain_append_unprotected( &_Malloc_GC_list, (rtems_chain_node *) p );
+  rtems_chain_initialize_node( node );
+  rtems_chain_append_unprotected( &_Malloc_GC_list, node );
   rtems_interrupt_lock_release( &_Malloc_GC_lock, &lock_context );
 }
 #endif
diff --git a/cpukit/libcsupport/src/mount-mgr.c b/cpukit/libcsupport/src/mount-mgr.c
index 20c900fe8d..02468208ad 100644
--- a/cpukit/libcsupport/src/mount-mgr.c
+++ b/cpukit/libcsupport/src/mount-mgr.c
@@ -124,6 +124,7 @@ rtems_filesystem_register(
 
   rtems_libio_lock();
   if ( rtems_filesystem_get_mount_handler( type ) == NULL ) {
+    rtems_chain_initialize_node( &fsn->node );
     rtems_chain_append_unprotected( chain, &fsn->node );
   } else {
     rtems_libio_unlock();
diff --git a/cpukit/libcsupport/src/printertask.c b/cpukit/libcsupport/src/printertask.c
index f358f32bb1..bae623bff3 100644
--- a/cpukit/libcsupport/src/printertask.c
+++ b/cpukit/libcsupport/src/printertask.c
@@ -194,6 +194,7 @@ void rtems_printer_task_drain( rtems_printer_task_context *ctx )
 {
   printer_task_buffer buffer;
 
+  rtems_chain_initialize_node( &buffer.node );
   buffer.action_kind = ACTION_DRAIN;
   buffer.action_data.task = rtems_task_self();
 
diff --git a/cpukit/libcsupport/src/sup_fs_location.c b/cpukit/libcsupport/src/sup_fs_location.c
index ddda4d15eb..2b8126ee8b 100644
--- a/cpukit/libcsupport/src/sup_fs_location.c
+++ b/cpukit/libcsupport/src/sup_fs_location.c
@@ -48,6 +48,7 @@ rtems_filesystem_location_info_t *rtems_filesystem_location_copy(
   dst->node_access_2 = src->node_access_2;
   dst->handlers = src->handlers;
   dst->mt_entry = src->mt_entry;
+  rtems_chain_initialize_node(&dst->mt_entry_node);
   rtems_filesystem_location_add_to_mt_entry(dst);
 
   return dst;
diff --git a/cpukit/libcsupport/src/termios.c b/cpukit/libcsupport/src/termios.c
index d12f9c48d5..d9886f4c01 100644
--- a/cpukit/libcsupport/src/termios.c
+++ b/cpukit/libcsupport/src/termios.c
@@ -149,6 +149,7 @@ rtems_status_code rtems_termios_device_install(
     return RTEMS_NO_MEMORY;
   }
 
+  rtems_chain_initialize_node(&new_device_node->node);
   new_device_node->major = major;
   new_device_node->minor = minor;
   new_device_node->handler = handler;