ros2/rcl

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Library to support implementation of language specific ROS Client Libraries.

Stars: 170
Forks: 206
Open beginner issues: 0
Indexed issues: 52
Avg merge: 2d 9h
Merged PRs (30d): 3

Dominant language: C++
License: Apache-2.0
Last GitHub push: Aug 31, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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52 open issues indexed

`rcl_lifecycle_register_state()` leaves dangling `start`/`goal` pointers when a state is registered after any transition already exists Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rcl#1336 · Opened Sep 16, 2026
Add a typed build + serialize path for `rcl_params_t` (companion to ros2/rclcpp#2981) Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#1330 · Opened Aug 22, 2026
rcl_yaml_param_parser treats bare nan/inf as doubles via fallback (inconsistent with composable node parameter loading) Open

bug

Difficulty 2/5 1-3 hours Newbie friendliness 63/100

ros2/rcl#1320 · 2 comments · Opened May 19, 2026
Pass node-specific params to a namespaced node Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

ros2/rcl#1306 · 1 comment · Opened Mar 23, 2026
--ros-args --help Open

enhancement

ros2/rcl#1270 · 3 comments · 2 reactions · 1 assignee · Opened Nov 13, 2025
Always check/reject all deprecated/removed env variable Open

backlog bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

ros2/rcl#1241 · 1 reaction · Opened May 21, 2025
Semantics of `rcl_shutdown` and `rcl_context_fini` Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#1194 · 3 comments · 1 reaction · Opened Oct 28, 2024
Topic remapping from YAML file Open

backlog enhancement

Difficulty 5/5 Over a week Newbie friendliness 28/100

ros2/rcl#1179 · 1 comment · 2 reactions · Opened Aug 23, 2024
Lifecyle node failed to make transition Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#1166 · 1 comment · Opened Jul 8, 2024
:farmer: Flaky `test_action_interaction__rmw_connextdds` in Windows debug and release Open

ros2/rcl#1162 · 6 comments · 1 assignee · Opened Jun 26, 2024
Actions: Reason for the default QoS for status_topic_qos? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#1155 · 2 comments · Opened May 2, 2024
Allow non-ros parameters in params file Open

backlog

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#1149 · 4 comments · 3 reactions · Opened Apr 23, 2024
Can't read byte-array parameters from parameter dump file -- {byte_array}, setting it to {string_array} is not allowed [Humble] Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ros2/rcl#1205 · 1 comment · 2 reactions · Opened Mar 1, 2024
Request for API that returns how many messages are ready for a subscription Open

backlog

Difficulty 5/5 Over a week Newbie friendliness 35/100

ros2/rcl#1109 · 1 comment · Opened Oct 12, 2023
Feature request: Sending an Action goal can be complexed, require difficult steps Open

ros2/rcl#1079 · 2 comments · 1 assignee · Opened Jun 15, 2023
Dynamically remap topic names Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#1072 · 12 comments · 2 reactions · Opened May 23, 2023
Log call from rcl_init (i.e. before logging is initialized) Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

ros2/rcl#1037 · 17 comments · 1 reaction · Opened Mar 1, 2023
Anonymous Nodes Open

ros2/rcl#1034 · 6 comments · 3 reactions · 1 assignee · Opened Feb 22, 2023
yaml tag full support in rcl_yaml_param_parser Open

backlog enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#1026 · 6 comments · Opened Jan 4, 2023
:farmer: Flaky test `test_graph__rmw_fastrtps_cpp` on ros2 buildfarm Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rcl#1016 · 1 comment · Opened Oct 27, 2022
valgrind: Mismatched free / delete and other leaks Open

bug help wanted

Difficulty 4/5 3-5 days Newbie friendliness 25/100

ros2/rcl#1009 · 7 comments · Opened Sep 13, 2022
Question about intended behavior of attempts in verifySubsystemCount Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

ros2/rcl#1005 · Opened Sep 5, 2022
uninformative crash and error message for invalid parameter override Open

help wanted

Difficulty 3/5 1-2 days Newbie friendliness 42/100

ros2/rcl#1001 · 3 comments · Opened Aug 18, 2022
Public API for remap_rule_t / node_option_t::arguments::remap_rules? Open

backlog

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#998 · 6 comments · Opened Aug 15, 2022
Goal status corruption when goal takes longer to finishes than ActionServer's result_timeout Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#970 · 4 comments · Opened Mar 15, 2022
Nested include directories complicates header inclusion logic Open

backlog

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ros2/rcl#964 · 9 comments · 1 reaction · Opened Mar 7, 2022
Flaky windows test test_node_info_clients Open

backlog bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#936 · Opened Sep 20, 2021
Make rcl call `rmw_set_log_severity` Open

more-information-needed

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#915 · 6 comments · Opened Apr 28, 2021
API documentation is outdated Open

ros2/rcl#914 · 1 assignee · Opened Apr 22, 2021
Allow zero initialize rcl_arguments_t to be fini'd without error Open

backlog

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

ros2/rcl#906 · 2 comments · Opened Mar 29, 2021
ASAN leaks in test codes related to mock_utils::patch_and_return Open

backlog

Difficulty 3/5 1-2 days Newbie friendliness 38/100

ros2/rcl#888 · 9 comments · Opened Jan 29, 2021
Remap two nodes of one executable file with same node name in different namespaces Open

backlog enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

ros2/rcl#806 · 8 comments · Opened Sep 21, 2020
Error handling often overwrites errors already set Open

bug

ros2/rcl#740 · 12 comments · 1 assignee · Opened Aug 11, 2020
rcl_wait() returns early when a timer awakes Open

bug

ros2/rcl#687 · 22 comments · 1 assignee · Opened Jun 16, 2020
Create a separate Steady Time datatype instead of having it embedded as an enumeration of time types Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#643 · Opened May 5, 2020
[YAML parser] Support for anchors/aliases Open

enhancement help wanted

Difficulty 5/5 Over a week Newbie friendliness 35/100

ros2/rcl#563 · 2 comments · 31 reactions · Opened Jan 31, 2020
Move security related filesystem and env utilities outside rcl Open

backlog enhancement

Difficulty 4/5 3-5 days Newbie friendliness 30/100

ros2/rcl#545 · 8 comments · Opened Dec 3, 2019
Support parameter descriptions in yaml parser Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#481 · 3 comments · Opened Aug 7, 2019
rcl package fails to cross compile Open

backlog

Difficulty 4/5 3-5 days Newbie friendliness 38/100

ros2/rcl#472 · 2 comments · Opened Jul 17, 2019
YAML parser: support mixed types Open

backlog enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

ros2/rcl#463 · 19 comments · 20 reactions · Opened Jun 21, 2019
Add `rcl_..._shutdown` Open

backlog enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#429 · 1 comment · Opened May 1, 2019
Add functions for working with action goal IDs Open

backlog enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

ros2/rcl#389 · 1 reaction · Opened Feb 15, 2019
Reuse rcl_lifecycle state machine in rcl_action Open

backlog enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#316 · Opened Oct 30, 2018
Name remapping specific to a fully-qualified node's name Open

enhancement

ros2/rcl#296 · 9 comments · 1 assignee · Opened Sep 11, 2018
Inconsistent struct/pointer arguments for allocators Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

ros2/rcl#264 · 7 comments · Opened Jun 29, 2018
[YAML parser] Improve print function Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#243 · Opened May 29, 2018
[YAML parser] Support bytes type Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#242 · Opened May 29, 2018
Static Remapping backreferences `\1` - `\9` Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

ros2/rcl#234 · Opened May 2, 2018
Static Remapping Multi Token Wildcard `**` Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

ros2/rcl#233 · 2 reactions · Opened May 2, 2018
Static Remapping Single Token Wildcard `*` Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

ros2/rcl#232 · 1 reaction · Opened May 2, 2018

ros2/rcl

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