std.mem.sliceTo: Return slice with sentinel from unbounded pointers

Commit dec1163fbb removed sentinels from the returned slice for C
pointers. Since C pointers have no bounds, we know that it'll keep
scanning until it finds `end` (or crash trying). The same is also true
of many-item pointers without a sentinel (e.g. `[*]T`), so I added
support for those too.

.forgejo/workflows/ci.yaml

@@ -152,7 +152,7 @@ jobs:
           fetch-depth: 0
       - name: Build and Test
         run: sh ci/x86_64-linux-debug.sh
-        timeout-minutes: 240
+        timeout-minutes: 180
   x86_64-linux-debug-llvm:
     runs-on: [self-hosted, x86_64-linux]
     steps:
@@ -162,7 +162,7 @@ jobs:
           fetch-depth: 0
       - name: Build and Test
         run: sh ci/x86_64-linux-debug-llvm.sh
-        timeout-minutes: 480
+        timeout-minutes: 360
   x86_64-linux-release:
     runs-on: [self-hosted, x86_64-linux]
     steps:
@@ -172,7 +172,7 @@ jobs:
           fetch-depth: 0
       - name: Build and Test
         run: sh ci/x86_64-linux-release.sh
-        timeout-minutes: 480
+        timeout-minutes: 360
 
   x86_64-windows-debug:
     runs-on: [self-hosted, x86_64-windows]

README.md

@@ -485,16 +485,14 @@ interpret your words.
 ### Find a Contributor Friendly Issue
 
 The issue label
-[Contributor Friendly](https://github.com/ziglang/zig/issues?q=is%3Aissue+is%3Aopen+label%3A%22contributor+friendly%22)
+[Contributor Friendly](https://codeberg.org/ziglang/zig/issues?labels=741726&state=open)
 exists to help you find issues that are **limited in scope and/or
 knowledge of Zig internals.**
 
 Please note that issues labeled
-[Proposal](https://github.com/ziglang/zig/issues?q=is%3Aissue+is%3Aopen+label%3Aproposal)
+[Proposal: Proposed](https://codeberg.org/ziglang/zig/issues?labels=746937&state=open)
-but do not also have the
+are still under consideration, and efforts to implement such a proposal have
-[Accepted](https://github.com/ziglang/zig/issues?q=is%3Aissue+is%3Aopen+label%3Aaccepted)
+a high risk of being wasted. If you are interested in a proposal which is
-label are still under consideration, and efforts to implement such a proposal
-have a high risk of being wasted. If you are interested in a proposal which is
 still under consideration, please express your interest in the issue tracker,
 providing extra insights and considerations that others have not yet expressed.
 The most highly regarded argument in such a discussion is a real world use case.
@@ -777,7 +775,7 @@ If you will be debugging the Zig compiler itself, or if you will be debugging
 any project compiled with Zig's LLVM backend (not recommended with the LLDB
 fork, prefer vanilla LLDB with a version that matches the version of LLVM that
 Zig is using), you can get a better debugging experience by using
-[`lldb_pretty_printers.py`](https://github.com/ziglang/zig/blob/master/tools/lldb_pretty_printers.py).
+[`lldb_pretty_printers.py`](https://codeberg.org/ziglang/zig/src/branch/master/tools/lldb_pretty_printers.py).
 
 Put this line in `~/.lldbinit`:
 

lib/libc/glibc/README.md

@@ -39,7 +39,7 @@ v2.2.5.
 
 The file `lib/libc/glibc/abilist` is a Zig-specific binary blob that
 defines the supported glibc versions and the set of symbols each version
-must define.  See https://github.com/ziglang/glibc-abi-tool for the
+must define.  See https://codeberg.org/ziglang/libc-abi-tools for the
 tooling to generate this blob.  The code in `glibc.zig` parses the abilist
 to build version-specific stub libraries on demand.
 

lib/std/Build.zig

@@ -79,7 +79,7 @@ enable_rosetta: bool = false,
 enable_wasmtime: bool = false,
 /// Use system Wine installation to run cross compiled Windows build artifacts.
 enable_wine: bool = false,
-/// After following the steps in https://github.com/ziglang/zig/wiki/Updating-libc#glibc,
+/// After following the steps in https://codeberg.org/ziglang/infra/src/branch/master/libc-update/glibc.md,
 /// this will be the directory $glibc-build-dir/install/glibcs
 /// Given the example of the aarch64 target, this is the directory
 /// that contains the path `aarch64-linux-gnu/lib/ld-linux-aarch64.so.1`.

lib/std/Io.zig

@@ -890,7 +890,7 @@ pub const Timestamp = struct {
     }
 
     pub fn withClock(t: Timestamp, clock: Clock) Clock.Timestamp {
-        return .{ .nanoseconds = t.nanoseconds, .clock = clock };
+        return .{ .raw = t, .clock = clock };
     }
 
     pub fn fromNanoseconds(x: i96) Timestamp {

lib/std/Io/net.zig

@@ -1090,7 +1090,8 @@ pub const Socket = struct {
     }
 
     pub fn sendMany(s: *const Socket, io: Io, messages: []OutgoingMessage, flags: SendFlags) SendError!void {
-        return io.vtable.netSend(io.userdata, s.handle, messages, flags);
+        const err, const n = io.vtable.netSend(io.userdata, s.handle, messages, flags);
+        if (n != messages.len) return err.?;
     }
 
     pub const ReceiveError = error{

lib/std/debug.zig

@@ -1604,6 +1604,13 @@ pub fn dumpStackPointerAddr(prefix: []const u8) void {
 
 test "manage resources correctly" {
     if (SelfInfo == void) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) {
+        // The C backend emits an extremely large C source file, meaning it has a huge
+        // amount of debug information. Parsing this debug information makes this test
+        // take too long to be worth running.
+        return error.SkipZigTest;
+    }
+
     const S = struct {
         noinline fn showMyTrace() usize {
             return @returnAddress();

lib/std/mem.zig

@@ -913,8 +913,9 @@ fn SliceTo(comptime T: type, comptime end: std.meta.Elem(T)) type {
         .pointer => |ptr_info| {
             const Elem = std.meta.Elem(T);
             const have_sentinel: bool = switch (ptr_info.size) {
-                .one, .slice, .many => if (std.meta.sentinel(T)) |s| s == end else false,
+                .one, .slice => if (std.meta.sentinel(T)) |s| s == end else false,
-                .c => false,
+                .many => if (std.meta.sentinel(T)) |s| s == end else true,
+                .c => true,
             };
             return @Pointer(.slice, .{
                 .@"const" = ptr_info.is_const,
@@ -961,8 +962,15 @@ test sliceTo {
         try testing.expectEqualSlices(u16, array[0..2], sliceTo(&array, 3));
         try testing.expectEqualSlices(u16, array[0..2], sliceTo(array[0..3], 3));
 
+        const many_ptr: [*]u16 = &array;
+        try testing.expectEqualSlices(u16, array[0..2], sliceTo(many_ptr, 3));
+        try testing.expectEqual([:3]u16, @TypeOf(sliceTo(many_ptr, 3)));
+
         const sentinel_ptr = @as([*:5]u16, @ptrCast(&array));
         try testing.expectEqualSlices(u16, array[0..2], sliceTo(sentinel_ptr, 3));
+        try testing.expectEqual([]u16, @TypeOf(sliceTo(sentinel_ptr, 3)));
+        try testing.expectEqualSlices(u16, array[0..4], sliceTo(sentinel_ptr, 5));
+        try testing.expectEqual([:5]u16, @TypeOf(sliceTo(sentinel_ptr, 5)));
         try testing.expectEqualSlices(u16, array[0..4], sliceTo(sentinel_ptr, 99));
 
         const optional_sentinel_ptr = @as(?[*:5]u16, @ptrCast(&array));
@@ -971,6 +979,7 @@ test sliceTo {
 
         const c_ptr = @as([*c]u16, &array);
         try testing.expectEqualSlices(u16, array[0..2], sliceTo(c_ptr, 3));
+        try testing.expectEqual([:3]u16, @TypeOf(sliceTo(c_ptr, 3)));
 
         const slice: []u16 = &array;
         try testing.expectEqualSlices(u16, array[0..2], sliceTo(slice, 3));
@@ -1015,6 +1024,8 @@ fn lenSliceTo(ptr: anytype, comptime end: std.meta.Elem(@TypeOf(ptr))) usize {
                 var i: usize = 0;
                 while (ptr[i] != end and ptr[i] != s) i += 1;
                 return i;
+            } else {
+                return indexOfSentinel(ptr_info.child, end, @ptrCast(ptr));
             },
             .c => {
                 assert(ptr != null);

tools/update_glibc.zig

@@ -1,6 +1,6 @@
 //! This script updates the .c, .h, .s, and .S files that make up the start
 //! files such as crt1.o. Not to be confused with
-//! https://github.com/ziglang/glibc-abi-tool/ which updates the `abilists`
+//! https://codeberg.org/ziglang/libc-abi-tools which updates the `abilists`
 //! file.
 //!
 //! Example usage: