[0.2] Backports

.github/renovate.json5

@@ -5,30 +5,41 @@
     ":maintainLockFilesMonthly",
     "helpers:pinGitHubActionDigestsToSemver"
   ],
+  baseBranchPatterns: ["main", "libc-0.2"],
+  lockFileMaintenance: {
+    enabled: true,
+    // Every other Monday. Renovate requires a range, hence `* *` rather
+    // than `0 0`.
+    schedule: ["* * 1-7,15-21 * 1"]
+  },
   packageRules: [
     {
-      matchCategories: [
-        "rust"
-      ],
-      matchJsonata: [
-        "isBreaking != true"
-      ],
+      matchCategories: ["rust"],
+      matchJsonata: ["isBreaking != true"],
       // Disable non-breaking change updates because they
       // are updated periodically with lockfile maintainance.
       enabled: false,
     },
     {
-      matchManagers: [
-        "github-actions"
-      ],
+      matchCategories: ["rust"],
+      // Separate PRs against main and 0.2
+      addLabels: ["stable-declined"],
+    },
+    {
+      matchManagers: ["github-actions"],
       // Every month
       schedule: "* 0 1 * *",
       groupName: "Github Actions",
+      // Separate PRs against main and 0.2
+      addLabels: ["stable-declined"],
     },
     {
       // Don't updates such as 23.10 -> mantic-20240530
-      "matchDatasources": ["docker"],
-      "pinDigests": false
+      matchDatasources: ["docker"],
+      // Only on main, we backport these
+      matchBaseBranches: ["main"],
+      addLabels: ["stable-nominated"],
+      pinDigests: false
     }
   ],
   // Receive any update that fixes security vulnerabilities.

.github/workflows/ci.yaml

@@ -135,6 +135,7 @@ jobs:
             os: ubuntu-26.04-arm
           - target: i686-pc-windows-msvc
             os: windows-2025
+            host: x86_64-pc-windows-msvc # Tier 1 without host tools
           - target: i686-unknown-linux-gnu
           - target: x86_64-pc-windows-gnu
             os: windows-2025
@@ -144,6 +145,7 @@ jobs:
     runs-on: ${{ matrix.os && matrix.os || 'ubuntu-26.04' }}
     timeout-minutes: 25
     env:
+      RUST_HOST: ${{ matrix.host }}
       TARGET: ${{ matrix.target }}
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -237,7 +239,7 @@ jobs:
           - target: x86_64-unknown-linux-musl
             env: { TEST_MUSL_V1_2: 1 }
             artifact-tag: new-musl
-          # FIXME: It seems some items in `src/unix/mod.rs` aren't defined on redox actually.
+          # FIXME: https://github.com/rust-lang/libc/issues/5520
           # - target: x86_64-unknown-redox
 
           # FIXME(ppc): SIGILL running tests, see

CONTRIBUTING.md

@@ -132,6 +132,7 @@ Common sources include:
   <https://sourceware.org/git/?p=glibc.git;a=tree> (original)
 * Illumos: <https://github.com/illumos/illumos-gate> (official mirror),
   <https://code.illumos.org/plugins/gitiles/illumos-gate/+/refs/heads/master> (original)
+* L4RE: <https://github.com/kernkonzept/l4re-core> (original)
 * Linux uapi: <https://github.com/torvalds/linux/tree/master/include/uapi> (official mirror),
   <https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/> (original)
 * Musl: <https://github.com/kraj/musl> (unofficial mirror),
@@ -141,6 +142,8 @@ Common sources include:
 * OpenBSD: <https://github.com/openbsd> (official mirror),
   <https://cvsweb.openbsd.org/src> (original)
 * RedoxOS: <https://gitlab.redox-os.org/redox-os/relibc>
+* Uclibc: <https://github.com/wbx-github/uclibc-ng> (mirror),
+  <https://git.uclibc-ng.org/git/uclibc-ng.git> (original)
 * Windows GNU: <https://github.com/mingw-w64/mingw-w64> (unofficial mirror),
   <https://sourceforge.net/p/mingw-w64/mingw-w64/ci/master/tree/> (original)
 * Windows MSVC: <https://github.com/microsoft/win32metadata>
@@ -171,19 +174,7 @@ are preferred because they become part of history.)
 Including links to manpages is not required but can also be very helpful to
 include. Some platforms also publish manpages but not sources.
 
-Common web manuals:
-
-* AIX: <https://www.ibm.com/docs/en/aix/7.3.0>
-* Apple: <https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man5/manpages.5.html>
-  is the only known official site but it is severly outdated. <https://manp.gs/mac/>
-  or <https://ss64.com/mac/> are better options.
-* DragonFlyBSD: <https://www.dragonflybsd.org/cgi/web-man>
-* FreeBSD: <https://man.freebsd.org/cgi/man.cgi>
-* Illumos: <https://illumos.org/man/>
-* NetBSD: <https://man.netbsd.org/>
-* OpenBSD: <https://man.openbsd.org/>
-* Solaris: <https://docs.oracle.com/cd/E88353_01/>
-* Windows MSVC: <https://learn.microsoft.com/en-us/cpp/c-runtime-library/c-run-time-library-reference?view=msvc-180>
+See documentation in `src/lib.rs` for links to online manuals.
 
 ## Breaking change policy
 

Cargo.toml

@@ -24,16 +24,18 @@ default-target = "x86_64-unknown-linux-gnu"
 targets = [
     # Note: Keep this in sync with ci/verify-build.py
     #
-    # Tier 1
+    # Tier 1 with host tools
     "aarch64-apple-darwin",
     "aarch64-pc-windows-msvc",
     "aarch64-unknown-linux-gnu",
-    "i686-pc-windows-msvc",
     "i686-unknown-linux-gnu",
     "x86_64-pc-windows-gnu",
     "x86_64-pc-windows-msvc",
     "x86_64-unknown-linux-gnu",
     #
+    # Tier 1 without host tools
+    "i686-pc-windows-msvc",
+    #
     # Tier 2 with host tools
     "aarch64-pc-windows-gnullvm",
     "aarch64-unknown-linux-musl",