diff options
| author | Kinsey Moore <kinsey.moore@oarcorp.com> | 2023-03-08 14:39:25 -0600 |
|---|---|---|
| committer | Joel Sherrill <joel@rtems.org> | 2023-03-09 09:16:12 -0600 |
| commit | fd6d862033961da3c8d9190033121472b7692297 (patch) | |
| tree | 74e982caa9be3fa0615e1ce11539413c27443efe /c-user | |
| parent | waf: Update to waf 2.0.25 (diff) | |
| download | rtems-docs-fd6d862033961da3c8d9190033121472b7692297.tar.bz2 | |
c-user/chains: Correct iteration example code
Casting the node returned by rtems_chain_head is incorrect. That node is
owned by the control structure and use of it post-cast could cause
memory corruption. Instead, use rtems_chain_first which returns the
node after the head node. This also corrects node->next to
rtems_chain_next(node) which makes better use of the API.
Diffstat (limited to 'c-user')
| -rw-r--r-- | c-user/chains.rst | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/c-user/chains.rst b/c-user/chains.rst index f518ef4..ca80b4b 100644 --- a/c-user/chains.rst +++ b/c-user/chains.rst @@ -192,11 +192,12 @@ placed on another chain: rtems_chain_initialize_empty (out); - node = rtems_chain_head (chain); + node = rtems_chain_first (chain); + while (!rtems_chain_is_tail (chain, node)) { bar = (foo*) node; - rtems_chain_node* next_node = node->next; + rtems_chain_node* next_node = rtems_chain_next(node); if (strcmp (match, bar->data) == 0) { rtems_chain_extract (node); |