A lightweight error handling library for C++11
A lightweight error handling library for C++11.
Documentation
https://boostorg.github.io/leaf/
Features
- Portable single-header format, no dependencies.
- Tiny code size when configured for embedded development.
- No dynamic memory allocations, even with very large payloads.
- Deterministic unbiased efficiency on the "happy" path and the "sad" path.
- Error objects are handled in constant time, independent of call stack depth.
- Can be used with or without exception handling.
Support
Distribution
Besides GitHub, there are two other distribution channels:
- LEAF is included in official Boost releases, starting with Boost 1.75.
- For maximum portability, the library is also available in single-header format: simply download leaf.hpp (direct download link).
Copyright 2018-2023 Emil Dotchevski and Reverge Studios, Inc. Distributed under the http://www.boost.org/LICENSE_1_0.txt[Boost Software License, Version 1.0].
Reviews
Builds
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_44-gcc_16-bindist |
| timestamp |
2026-10-13 12:49:14 UTC (02 10:11:35 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++-O3 |
| timestamp |
2026-10-11 17:02:14 UTC (04 05:58:35 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++-static_O3 |
| timestamp |
2026-10-11 17:02:12 UTC (04 05:58:37 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22_libc++ |
| timestamp |
2026-10-11 17:01:46 UTC (04 05:59:02 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22-O3 |
| timestamp |
2026-10-11 17:01:29 UTC (04 05:59:20 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22-static_O3 |
| timestamp |
2026-10-11 17:01:27 UTC (04 05:59:22 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_22 |
| timestamp |
2026-10-11 16:58:07 UTC (04 06:02:41 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-static_O3 |
| timestamp |
2026-10-11 15:49:44 UTC (04 07:11:04 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-O3 |
| timestamp |
2026-10-11 15:48:47 UTC (04 07:12:01 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0 |
| timestamp |
2026-10-11 15:47:52 UTC (04 07:12:57 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-static_O3 |
| timestamp |
2026-10-11 13:58:06 UTC (04 09:02:43 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-O3 |
| timestamp |
2026-10-11 13:57:26 UTC (04 09:03:23 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16-ndebug_O3 |
| timestamp |
2026-10-11 13:56:27 UTC (04 09:04:22 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_16 |
| timestamp |
2026-10-11 13:55:11 UTC (04 09:05:37 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-O3 |
| timestamp |
2026-10-11 13:49:54 UTC (04 09:10:55 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-static_O3 |
| timestamp |
2026-10-11 13:49:14 UTC (04 09:11:35 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-static_O3 |
| timestamp |
2026-10-11 13:46:47 UTC (04 09:14:01 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++ |
| timestamp |
2026-10-11 13:46:08 UTC (04 09:14:40 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-O3 |
| timestamp |
2026-10-11 13:45:59 UTC (04 09:14:50 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18 |
| timestamp |
2026-10-11 13:45:20 UTC (04 09:15:28 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin22.5.0 |
| tgt config |
macos_13-clang_15.0 |
| timestamp |
2026-10-11 12:57:28 UTC (04 10:03:21 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_21_libc++ |
| timestamp |
2026-10-11 12:36:36 UTC (04 10:24:12 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-clang_21 |
| timestamp |
2026-10-11 12:34:24 UTC (04 10:26:24 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_15-O3 |
| timestamp |
2026-10-11 12:32:02 UTC (04 10:28:46 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_15 |
| timestamp |
2026-10-11 12:30:36 UTC (04 10:30:13 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_13-gcc_14-bindist |
| timestamp |
2026-10-11 12:22:05 UTC (04 10:38:43 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19-O3 |
| timestamp |
2026-10-11 12:19:52 UTC (04 10:40:57 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19-static_O3 |
| timestamp |
2026-10-11 12:17:39 UTC (04 10:43:10 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd15.0 |
| tgt config |
freebsd_15-clang_19 |
| timestamp |
2026-10-11 12:16:23 UTC (04 10:44:26 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_24.04-gcc_13-bindist |
| timestamp |
2026-10-11 12:16:08 UTC (04 10:44:41 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18 |
| timestamp |
2026-10-11 11:51:52 UTC (04 11:08:57 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-static_O3 |
| timestamp |
2026-10-11 10:41:31 UTC (04 12:19:17 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-ndebug_O3 |
| timestamp |
2026-10-11 10:41:27 UTC (04 12:19:22 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-O3 |
| timestamp |
2026-10-11 10:40:53 UTC (04 12:19:56 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14 |
| timestamp |
2026-10-11 10:40:13 UTC (04 12:20:35 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13 |
| timestamp |
2026-10-10 10:54:30 UTC (05 12:06:19 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_43-gcc_15-bindist |
| timestamp |
2026-10-09 12:22:40 UTC (06 10:38:08 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18-static_O2 |
| timestamp |
2026-10-06 14:00:00 UTC (09 09:00:48 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18-O2 |
| timestamp |
2026-10-06 13:59:23 UTC (09 09:01:25 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-msvc_18 |
| timestamp |
2026-10-06 13:59:18 UTC (09 09:01:30 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18-static_O2 |
| timestamp |
2026-10-06 12:05:05 UTC (09 10:55:43 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18-O2 |
| timestamp |
2026-10-06 12:04:47 UTC (09 10:56:02 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.5 |
| tgt config |
windows_10-clang_21_msvc_18 |
| timestamp |
2026-10-06 12:04:14 UTC (09 10:56:35 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17 |
| timestamp |
2026-10-06 11:06:50 UTC (09 11:53:59 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_26.04-gcc_15-bindist |
| timestamp |
2026-10-03 14:22:52 UTC (12 08:37:57 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-static_O2 |
| timestamp |
2026-10-03 11:57:16 UTC (12 11:03:33 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-O2 |
| timestamp |
2026-10-03 11:56:52 UTC (12 11:03:57 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64 |
| timestamp |
2026-10-03 11:56:34 UTC (12 11:04:15 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew |
| result |
excluded (https://github) |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-O3 |
| result |
excluded (https://github) |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-static_O3 |
| result |
excluded (https://github) |