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Make sure to always check return values. (#840)

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* Make sure to always check return values.

Pointed out by clang static analysis, we should always
check these return values.

Signed-off-by: Chris Lalancette <clalancette@openrobotics.org>
This commit is contained in:
Chris Lalancette 2020-10-29 08:15:52 -04:00 • committed by Alejandro Hernández Cordero
parent fd2f427563
commit 1f7baf2ee5
2 changed files with 21 additions and 1 deletions
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18
rcl_action/src/rcl_action/graph.c
View file

@ -122,7 +122,10 @@ _filter_action_names(
// Cleanup if there is an error
if (RCL_RET_OK != ret) {
rcl_ret_t fini_ret = rcl_names_and_types_fini(action_names_and_types);
(void)fini_ret; // Error already set
if (RCL_RET_OK != fini_ret) {
RCUTILS_SAFE_FWRITE_TO_STDERR(
"Freeing names and types failed while handling a previous error. Leaking memory!\n");
}
}
return ret;
@ -154,6 +157,10 @@ rcl_action_get_client_names_and_types_by_node(
rcl_ret_t nat_fini_ret = rcl_names_and_types_fini(&topic_names_and_types);
if (RCL_RET_OK != nat_fini_ret) {
ret = rcl_names_and_types_fini(action_names_and_types);
if (RCL_RET_OK != ret) {
RCUTILS_SAFE_FWRITE_TO_STDERR(
"Freeing names and types failed while handling a previous error. Leaking memory!\n");
}
return nat_fini_ret;
}
return ret;
@ -185,6 +192,11 @@ rcl_action_get_server_names_and_types_by_node(
rcl_ret_t nat_fini_ret = rcl_names_and_types_fini(&topic_names_and_types);
if (RCL_RET_OK != nat_fini_ret) {
ret = rcl_names_and_types_fini(action_names_and_types);
if (RCL_RET_OK != ret) {
RCUTILS_SAFE_FWRITE_TO_STDERR(
"Freeing names and types failed while handling a previous error. Leaking memory!\n");
}
return nat_fini_ret;
}
return ret;
@ -211,6 +223,10 @@ rcl_action_get_names_and_types(
rcl_ret_t nat_fini_ret = rcl_names_and_types_fini(&topic_names_and_types);
if (RCL_RET_OK != nat_fini_ret) {
ret = rcl_names_and_types_fini(action_names_and_types);
if (RCL_RET_OK != ret) {
RCUTILS_SET_ERROR_MSG(
"Freeing names and types failed while handling a previous error. Leaking memory!\n");
}
return nat_fini_ret;
}
return ret;

4
rcl_lifecycle/src/rcl_lifecycle.c
View file

@ -234,6 +234,10 @@ rcl_lifecycle_state_machine_init(
// init default state machine might have allocated memory,
// so we have to call fini
ret = rcl_lifecycle_state_machine_fini(state_machine, node_handle, allocator);
if (ret != RCL_RET_OK) {
RCUTILS_SAFE_FWRITE_TO_STDERR(
"Freeing state machine failed while handling a previous error. Leaking memory!\n");
}
return RCL_RET_ERROR;
}
}