boostorg/cobalt

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Coroutines for C++20 & asio

Stars: 348
Forks: 47
Open beginner issues: 0
Indexed issues: 39
Avg merge: 3d 8h
Merged PRs (30d): 1

Dominant language: C++
License: No license data
Last GitHub push: Sep 13, 2026
Latest indexed: Sep 14, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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39 open issues indexed

Outdated example in Reference? Open

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

boostorg/cobalt#285 · Opened Sep 18, 2026
Racing a range of generators breaks generators in the range Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

boostorg/cobalt#281 · 6 comments · Opened Jul 13, 2026
Race() won't compile if as_tuple() or as_result() used to wrap awaitable parameter(s) Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

boostorg/cobalt#271 · Opened Apr 2, 2026
Ops that co_await in initiate() do not cancel when executable receives a signal Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

boostorg/cobalt#270 · Opened Apr 2, 2026
# Writer loop crashes when directly `co_await` write, but works when wrapped in lambda Open

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

boostorg/cobalt#268 · Opened Feb 27, 2026
Regarding the inability to reference io/ssl in vcpkg Open

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

boostorg/cobalt#265 · 1 comment · Opened Feb 3, 2026
Failure to compile cobalt channel in templated code. Open

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

boostorg/cobalt#263 · 2 comments · Opened Jan 27, 2026
cobalt not built using b2 when specifying `cxxstd=23` Open

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

boostorg/cobalt#261 · 2 comments · Opened Jan 8, 2026
Why does libboost_cobalt.so get built for GCC 16 but not GCC 15? Open

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

boostorg/cobalt#260 · 8 comments · Opened Dec 22, 2025
boost::asio::signal_set crash for boost 1.89.0 Open

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

boostorg/cobalt#253 · 4 comments · Opened Nov 4, 2025
b2 warning: non-free usage requirements <boost.cobalt.pmr>std ignored Open

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

boostorg/cobalt#245 · Opened Sep 7, 2025
example : thread pool + increase asio threads Open

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

boostorg/cobalt#238 · 3 comments · Opened Jul 21, 2025
ring_buffer Open

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

boostorg/cobalt#233 · Opened Jul 4, 2025
Fails to compile because asio::execution::executor is unexpected in concept Open

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

boostorg/cobalt#225 · 7 comments · Opened Apr 12, 2025
Generator local scope resources are not cleaned up after coroutine object going out of scope Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

boostorg/cobalt#221 · 6 comments · Opened Apr 3, 2025
cancellation Open

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

boostorg/cobalt#217 · 14 comments · Opened Dec 25, 2024
Empty generator Open

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

boostorg/cobalt#210 · 6 comments · Opened Oct 26, 2024
Add generator support to the python example. Open

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

boostorg/cobalt#205 · Opened Oct 12, 2024
Request, create empty promise object that can be set later outside of a coroutine. Open

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

boostorg/cobalt#203 · 1 comment · Opened Sep 23, 2024
Unfinished task is resumed after co_main returns Open

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

boostorg/cobalt#198 · 3 comments · Opened Sep 11, 2024
heap-use-after-free error when cancelling spawned awaitable Open

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

boostorg/cobalt#194 · 6 comments · Opened Jul 22, 2024
Documentation generation error Open

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

boostorg/cobalt#191 · Opened Jul 17, 2024
Unhandled `cobalt::task` prevents destruction of `asio::io_context` Open

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

boostorg/cobalt#180 · 1 comment · Opened May 13, 2024
boost-cobalt error compatibility x64-osx on Mac mini M2 with vcpkg Open

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

boostorg/cobalt#179 · 2 comments · Opened May 3, 2024
Access violation when returing object with specific layout on MSVC Open

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

boostorg/cobalt#172 · 16 comments · Opened Apr 17, 2024
`cobalt::thread` doesn't release mutex Open

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

boostorg/cobalt#165 · 1 comment · Opened Mar 22, 2024
Can't erase on vector<cobalt::promise<void>> Open

boostorg/cobalt#159 · 6 comments · 1 assignee · Opened Mar 11, 2024
Suggestion: mutex and condition variable Open

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

boostorg/cobalt#143 · 16 comments · 3 reactions · Opened Dec 5, 2023
Better documentaiton for awaitable-returning functions Open

documentation

boostorg/cobalt#138 · 1 assignee · Opened Nov 9, 2023
Provide async_read_until that uses symmetric transfer Open

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

boostorg/cobalt#127 · 1 comment · Opened Oct 3, 2023
Fix the preconditoins in the library docs Open

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

boostorg/cobalt#119 · Opened Sep 24, 2023
Some suggestions for documentation Open

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

boostorg/cobalt#114 · Opened Sep 16, 2023
The interface of `race` (`select`) Open

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

boostorg/cobalt#103 · Opened Sep 2, 2023
Are value-consuming generators useful? Open

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

boostorg/cobalt#101 · 7 comments · Opened Sep 2, 2023
activity tracker Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 42/100

boostorg/cobalt#97 · Opened Aug 31, 2023
The `generator` example Open

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

boostorg/cobalt#70 · 2 comments · Opened Aug 13, 2023
Docs: recommended changes Open

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

boostorg/cobalt#64 · 1 comment · 1 reaction · Opened Aug 10, 2023
Multiple `mismatched-new-delete` warnings with gcc 11.3 and -Wall Open

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

boostorg/cobalt#7 · 5 comments · Opened Jun 29, 2023
Suggestion: Health-check example Open

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

boostorg/cobalt#2 · 1 comment · Opened Mar 1, 2023

boostorg/cobalt

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