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_debian_13-clang_22_libc++-static_O3 |
| timestamp |
2026-06-13 16:48:25 UTC (01 05:33:26 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++-O3 |
| timestamp |
2026-06-13 16:47:58 UTC (01 05:33:53 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 |
2026-06-13 16:47:55 UTC (01 05:33:56 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 |
2026-06-13 16:47:42 UTC (01 05:34:09 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 |
2026-06-13 16:47:00 UTC (01 05:34:51 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 |
2026-06-13 16:45:07 UTC (01 05:36:44 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 |
2026-06-13 15:44:33 UTC (01 06:37:18 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-static_O3 |
| timestamp |
2026-06-13 15:26:43 UTC (01 06:55:08 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 |
2026-06-13 15:25:49 UTC (01 06:56:02 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 |
2026-06-13 15:24:56 UTC (01 06:56:55 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 |
2026-06-13 14:50:00 UTC (01 07:31:51 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 |
2026-06-13 14:49:19 UTC (01 07:32:32 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 |
2026-06-13 14:48:48 UTC (01 07:33:03 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 |
2026-06-13 14:48:38 UTC (01 07:33:13 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 |
2026-06-13 14:14:58 UTC (01 08:06:53 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 |
2026-06-13 14:14:36 UTC (01 08:07:15 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 |
2026-06-13 14:14:12 UTC (01 08:07:39 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 |
2026-06-13 14:13:48 UTC (01 08:08:03 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 |
2026-06-13 14:13:28 UTC (01 08:08:23 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 |
2026-06-13 14:13:05 UTC (01 08:08:46 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-clang_21_libc++ |
| timestamp |
2026-06-13 13:27:25 UTC (01 08:54:26 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 |
2026-06-13 13:26:42 UTC (01 08:55:09 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 |
2026-06-13 13:20:59 UTC (01 09:00:52 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 |
2026-06-13 13:20:10 UTC (01 09:01:41 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 |
2026-06-13 13:11:45 UTC (01 09:10:06 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 |
2026-06-13 12:47:02 UTC (01 09:34:49 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_24.04-gcc_13-bindist |
| timestamp |
2026-06-13 12:42:20 UTC (01 09:39:31 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 |
2026-06-13 12:36:28 UTC (01 09:45:23 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 |
2026-06-13 12:35:56 UTC (01 09:45:55 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 |
2026-06-13 12:35:18 UTC (01 09:46:33 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18 |
| timestamp |
2026-06-13 12:34:08 UTC (01 09:47:43 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 |
2026-06-13 10:48:00 UTC (01 11:33:51 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 |
2026-06-13 10:47:33 UTC (01 11:34:18 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 |
2026-06-13 10:47:21 UTC (01 11:34:30 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 |
2026-06-13 10:46:56 UTC (01 11:34:55 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13 |
| timestamp |
2026-06-12 11:07:34 UTC (02 11:14:17 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-msvc_18-static_O2 |
| timestamp |
2026-06-08 21:34:40 UTC (06 00:47:11 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 |
2026-06-08 21:34:15 UTC (06 00:47:36 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 |
2026-06-08 21:33:58 UTC (06 00:47:53 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 |
2026-06-08 12:19:52 UTC (06 10:01:59 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 |
2026-06-08 12:19:51 UTC (06 10:02:00 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 |
2026-06-08 12:19:26 UTC (06 10:02:25 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 |
2026-06-08 10:36:54 UTC (06 11:44:57 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_15.2_mingw_w64-static_O2 |
| timestamp |
2026-06-05 12:14:34 UTC (09 10:07:17 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 |
2026-06-05 12:13:57 UTC (09 10:07:54 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 |
2026-06-05 12:13:51 UTC (09 10:08:00 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_26.04-gcc_15-bindist |
| timestamp |
2026-06-05 11:22:57 UTC (09 10:58:54 days ago) |
| result |
warning (update) | log | rebuild |
| toolchain |
public-0.18.1 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_44-gcc_16-bindist |
| timestamp |
2026-06-01 11:27:40 UTC (13 10:54:11 days ago) |
| result |
warning (update) | 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) |