The Guidelines Support Library (GSL) contains functions and types that are suggested for use by the C++ Core Guidelines maintained by the Standard C++ Foundation.

The Guidelines Support Library (GSL) contains functions and types that are suggested for use by the
C++ Core Guidelines maintained by the Standard C++ Foundation.
This repo contains Microsoft's implementation of GSL.
The library includes types like span<T>, string_span, owner<> and others.
The entire implementation is provided inline in the headers under the gsl directory. The implementation generally assumes a platform that implements C++14 support. There are specific workarounds to support MSVC 2015.
Requires (1)
Reviews
Builds
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17.10-O2 |
| timestamp |
2026-03-07 01:53:47 UTC (02 14:45:53 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17.10-static_O2 |
| timestamp |
2026-03-07 01:50:47 UTC (02 14:48:54 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17.10 |
| timestamp |
2026-03-07 01:49:47 UTC (02 14:49:53 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-ndebug_O3 |
| timestamp |
2026-03-04 01:13:31 UTC (05 15:26:09 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-O3 |
| timestamp |
2026-03-04 01:06:22 UTC (05 15:33:18 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-static_O3 |
| timestamp |
2026-03-03 14:00:22 UTC (06 02:39:18 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14 |
| timestamp |
2026-03-03 13:58:06 UTC (06 02:41:34 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-clang_18_llvm_msvc_17.10-static_O2 |
| timestamp |
2026-03-01 04:10:52 UTC (08 12:28:48 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-clang_18_llvm_msvc_17.10-O2 |
| timestamp |
2026-03-01 04:09:30 UTC (08 12:30:10 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-clang_18_llvm_msvc_17.10 |
| timestamp |
2026-03-01 04:04:45 UTC (08 12:34:56 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_12-bindist |
| timestamp |
2026-02-28 13:56:23 UTC (09 02:43:17 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18-static_O3 |
| timestamp |
2026-02-28 12:31:30 UTC (09 04:08:10 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18-O3 |
| timestamp |
2026-02-28 12:29:08 UTC (09 04:10:33 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-freebsd13.3 |
| tgt config |
freebsd_13-clang_17 |
| timestamp |
2026-02-28 12:25:19 UTC (09 04:14:21 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-freebsd14.1 |
| tgt config |
freebsd_14-clang_18 |
| timestamp |
2026-02-28 12:18:49 UTC (09 04:20:51 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_17_libc++ |
| timestamp |
2026-02-28 12:13:10 UTC (09 04:26:30 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-static_O3 |
| timestamp |
2026-02-26 10:38:48 UTC (11 06:00:53 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18 |
| timestamp |
2026-02-26 10:35:59 UTC (11 06:03:41 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-O3 |
| timestamp |
2026-02-26 10:35:37 UTC (11 06:04:03 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_ubuntu_24.04-gcc_13-bindist |
| timestamp |
2026-02-26 10:25:36 UTC (11 06:14:04 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_13.2_mingw_w64-static_O2 |
| timestamp |
2026-02-26 10:24:55 UTC (11 06:14:45 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_13.2_mingw_w64-O2 |
| timestamp |
2026-02-26 10:24:44 UTC (11 06:14:56 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-w64-mingw32 |
| tgt config |
windows_10-gcc_13.2_mingw_w64 |
| timestamp |
2026-02-26 10:24:09 UTC (11 06:15:31 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-static_O3 |
| timestamp |
2026-02-26 10:20:33 UTC (11 06:19:07 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-ndebug_O3 |
| timestamp |
2026-02-26 10:20:01 UTC (11 06:19:39 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14-O3 |
| timestamp |
2026-02-26 10:19:32 UTC (11 06:20:08 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_14 |
| timestamp |
2026-02-26 10:18:36 UTC (11 06:21:04 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_17 |
| timestamp |
2026-02-26 10:08:46 UTC (11 06:30:55 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13 |
| timestamp |
2026-02-26 10:05:27 UTC (11 06:34:13 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-gcc_13.1 |
| timestamp |
2026-02-26 10:04:56 UTC (11 06:34:44 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-static_O3 |
| timestamp |
2026-02-25 11:30:06 UTC (12 05:09:34 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-O3 |
| timestamp |
2026-02-25 11:29:30 UTC (12 05:10:10 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++ |
| timestamp |
2026-02-25 11:29:00 UTC (12 05:10:41 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_40-gcc_14-bindist |
| timestamp |
2026-02-25 10:35:15 UTC (12 06:04:26 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17.8-O2 |
| timestamp |
2026-02-15 13:20:20 UTC (22 03:19:20 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17.8-static_O2 |
| timestamp |
2026-02-15 13:19:48 UTC (22 03:19:53 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-msvc_17.8 |
| timestamp |
2026-02-15 13:18:07 UTC (22 03:21:33 days ago) |
| result |
success | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-microsoft-win32-msvc14.3 |
| tgt config |
windows_10-clang_17_msvc_msvc_17.10 |
| timestamp |
2026-02-12 11:44:14 UTC (25 04:55:26 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_17_libc++ |
| timestamp |
2026-02-12 11:20:58 UTC (25 05:18:42 days ago) |
| result |
warning (update) | warning (test-installed) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
aarch64-linux-gnu |
| tgt config |
linux_debian_12-clang_17 |
| timestamp |
2026-02-12 10:19:10 UTC (25 06:20:30 days ago) |
| result |
error (update) | log | rebuild |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_18 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_18-static_O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++ |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_debian_12-clang_18_libc++-static_O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-linux-gnu |
| tgt config |
linux_fedora_39-gcc_13-bindist |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin22.5.0 |
| tgt config |
macos_13-clang_15.0 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-clang_15.0-static_O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-O3 |
| result |
unbuilt |
| toolchain |
public-0.17.0 |
| target |
x86_64-apple-darwin23.5.0 |
| tgt config |
macos_14-gcc_14_homebrew-static_O3 |
| result |
unbuilt |