[0.2] Backports

README.md

@@ -71,7 +71,7 @@ but this is not guaranteed.
 You can see the platform(target)-specific docs on [docs.rs], select a platform
 you want to see.
 
-See [`ci/build.sh`](https://github.com/rust-lang/libc/blob/HEAD/ci/build.sh) for
+See [`ci/verify-build.sh`](https://github.com/rust-lang/libc/blob/HEAD/ci/verify-build.sh) for
 the platforms on which `libc` is guaranteed to build for each Rust toolchain.
 The test-matrix at [GitHub Actions] and [Cirrus CI] show the platforms in which
 `libc` tests are run.

build.rs

@@ -5,7 +5,7 @@ use std::{env, str};
 // need to know all the possible cfgs that this script will set. If you need to set another cfg
 // make sure to add it to this list as well.
 const ALLOWED_CFGS: &'static [&'static str] = &[
-    "emscripten_new_stat_abi",
+    "emscripten_old_stat_abi",
     "espidf_time32",
     "freebsd10",
     "freebsd11",
@@ -74,9 +74,9 @@ fn main() {
     }
 
     match emcc_version_code() {
-        Some(v) if (v >= 30142) => set_cfg("emscripten_new_stat_abi"),
-        // Non-Emscripten or version < 3.1.42.
-        Some(_) | None => (),
+        Some(v) if (v < 30142) => set_cfg("emscripten_old_stat_abi"),
+        // Non-Emscripten or version >= 3.1.42.
+        _ => (),
     }
 
     // On CI: deny all warnings

ci/emscripten.sh

@@ -3,7 +3,7 @@
 set -eux
 
 # Note: keep in sync with:
-# https://github.com/rust-lang/rust/blob/master/src/ci/docker/scripts/emscripten.sh
+# https://github.com/rust-lang/rust/blob/master/src/doc/rustc/src/platform-support/wasm32-unknown-emscripten.md#requirements
 emsdk_version=3.1.68
 
 git clone https://github.com/emscripten-core/emsdk.git /emsdk-portable

libc-test/build.rs

@@ -268,7 +268,7 @@ fn test_apple(target: &str) {
         "os/clock.h",
         "os/lock.h",
         "os/signpost.h",
-        // FIXME: Requires the macOS 14.4 SDK.
+        // FIXME(macos): Requires the macOS 14.4 SDK.
         //"os/os_sync_wait_on_address.h",
         "poll.h",
         "pthread.h",
@@ -338,15 +338,15 @@ fn test_apple(target: &str) {
             return true;
         }
         match ty {
-            // FIXME: actually a union
+            // FIXME(union): actually a union
             "sigval" => true,
 
-            // FIXME: The size is changed in recent macOSes.
+            // FIXME(macos): The size is changed in recent macOSes.
             "malloc_zone_t" => true,
             // it is a moving target, changing through versions
             // also contains bitfields members
             "tcp_connection_info" => true,
-            // FIXME: The size is changed in recent macOSes.
+            // FIXME(macos): The size is changed in recent macOSes.
             "malloc_introspection_t" => true,
 
             _ => false,
@@ -358,10 +358,10 @@ fn test_apple(target: &str) {
             return true;
         }
         match ty {
-            // FIXME: Requires the macOS 14.4 SDK.
+            // FIXME(macos): Requires the macOS 14.4 SDK.
             "os_sync_wake_by_address_flags_t" | "os_sync_wait_on_address_flags_t" => true,
 
-            // FIXME: "'__uint128' undeclared" in C
+            // FIXME(macos): "'__uint128' undeclared" in C
             "__uint128" => true,
 
             _ => false,
@@ -377,13 +377,13 @@ fn test_apple(target: &str) {
             // These OSX constants are removed in Sierra.
             // https://developer.apple.com/library/content/releasenotes/General/APIDiffsMacOS10_12/Swift/Darwin.html
             "KERN_KDENABLE_BG_TRACE" | "KERN_KDDISABLE_BG_TRACE" => true,
-            // FIXME: the value has been changed since Catalina (0xffff0000 -> 0x3fff0000).
+            // FIXME(macos): the value has been changed since Catalina (0xffff0000 -> 0x3fff0000).
             "SF_SETTABLE" => true,
 
-            // FIXME: XCode 13.1 doesn't have it.
+            // FIXME(macos): XCode 13.1 doesn't have it.
             "TIOCREMOTE" => true,
 
-            // FIXME: Requires the macOS 14.4 SDK.
+            // FIXME(macos): Requires the macOS 14.4 SDK.
             "OS_SYNC_WAKE_BY_ADDRESS_NONE"
             | "OS_SYNC_WAKE_BY_ADDRESS_SHARED"
             | "OS_SYNC_WAIT_ON_ADDRESS_NONE"
@@ -402,19 +402,19 @@ fn test_apple(target: &str) {
             // close calls the close_nocancel system call
             "close" => true,
 
-            // FIXME: std removed libresolv support: https://github.com/rust-lang/rust/pull/102766
+            // FIXME(1.0): std removed libresolv support: https://github.com/rust-lang/rust/pull/102766
             "res_init" => true,
 
-            // FIXME: remove once the target in CI is updated
+            // FIXME(macos): remove once the target in CI is updated
             "pthread_jit_write_freeze_callbacks_np" => true,
 
-            // FIXME: ABI has been changed on recent macOSes.
+            // FIXME(macos): ABI has been changed on recent macOSes.
             "os_unfair_lock_assert_owner" | "os_unfair_lock_assert_not_owner" => true,
 
-            // FIXME: Once the SDK get updated to Ventura's level
+            // FIXME(macos): Once the SDK get updated to Ventura's level
             "freadlink" | "mknodat" | "mkfifoat" => true,
 
-            // FIXME: Requires the macOS 14.4 SDK.
+            // FIXME(macos): Requires the macOS 14.4 SDK.
             "os_sync_wake_by_address_any"
             | "os_sync_wake_by_address_all"
             | "os_sync_wake_by_address_flags_t"
@@ -429,7 +429,7 @@ fn test_apple(target: &str) {
 
     cfg.skip_field(move |struct_, field| {
         match (struct_, field) {
-            // FIXME: the array size has been changed since macOS 10.15 ([8] -> [7]).
+            // FIXME(macos): the array size has been changed since macOS 10.15 ([8] -> [7]).
             ("statfs", "f_reserved") => true,
             ("__darwin_arm_neon_state64", "__v") => true,
             // MAXPATHLEN is too big for auto-derive traits on arrays.
@@ -447,7 +447,7 @@ fn test_apple(target: &str) {
 
     cfg.skip_field_type(move |struct_, field| {
         match (struct_, field) {
-            // FIXME: actually a union
+            // FIXME(union): actually a union
             ("sigevent", "sigev_value") => true,
             _ => false,
         }
@@ -481,7 +481,7 @@ fn test_apple(target: &str) {
             s if s.ends_with("_nsec") && struct_.starts_with("stat") => {
                 s.replace("e_nsec", "espec.tv_nsec")
             }
-            // FIXME: sigaction actually contains a union with two variants:
+            // FIXME(macos): sigaction actually contains a union with two variants:
             // a sa_sigaction with type: (*)(int, struct __siginfo *, void *)
             // a sa_handler with type sig_t
             "sa_sigaction" if struct_ == "sigaction" => "sa_handler".to_string(),
@@ -490,7 +490,7 @@ fn test_apple(target: &str) {
     });
 
     cfg.skip_roundtrip(move |s| match s {
-        // FIXME: this type has the wrong ABI
+        // FIXME(macos): this type has the wrong ABI
         "max_align_t" if i686 => true,
         // Can't return an array from a C function.
         "uuid_t" | "vol_capabilities_set_t" => true,
@@ -597,7 +597,7 @@ fn test_openbsd(target: &str) {
             return true;
         }
         match ty {
-            // FIXME: actually a union
+            // FIXME(union): actually a union
             "sigval" => true,
 
             _ => false,
@@ -915,6 +915,7 @@ fn test_solarish(target: &str) {
         "sched.h",
         "semaphore.h",
         "signal.h",
+        "spawn.h",
         "stddef.h",
         "stdint.h",
         "stdio.h",
@@ -3065,6 +3066,9 @@ fn test_emscripten(target: &str) {
             // https://github.com/emscripten-core/emscripten/pull/14883
             "SIG_IGN" => true,
 
+            // Constants present in other linuxes but not emscripten
+            "SI_DETHREAD" | "TRAP_PERF" => true,
+
             // LFS64 types have been removed in Emscripten 3.1.44
             // https://github.com/emscripten-core/emscripten/pull/19812
             n if n.starts_with("RLIM64") => true,
@@ -4130,6 +4134,9 @@ fn test_linux(target: &str) {
             // FIXME: Not currently available in headers on ARM and musl.
             "NETLINK_GET_STRICT_CHK" if arm => true,
 
+            // Skip as this signal codes and trap reasons need newer headers
+            "SI_DETHREAD" | "TRAP_PERF" => true,
+
             // kernel constants not available in uclibc 1.0.34
             | "EXTPROC"
             | "IPPROTO_BEETPH"

libc-test/semver/illumos.txt

@@ -14,8 +14,10 @@ POSIX_FADV_NORMAL
 POSIX_FADV_RANDOM
 POSIX_FADV_SEQUENTIAL
 POSIX_FADV_WILLNEED
+POSIX_SPAWN_SETSID
 posix_fadvise
 posix_fallocate
+posix_spawn_file_actions_addfchdir_np
 pthread_attr_get_np
 pthread_attr_getstackaddr
 pthread_attr_setstack

libc-test/semver/linux.txt

@@ -2879,7 +2879,17 @@ SIOCSMIIREG
 SIOCSRARP
 SIOCWANDEV
 SIOGIFINDEX
+SI_ASYNCIO
+SI_ASYNCNL
+SI_DETHREAD
+SI_KERNEL
 SI_LOAD_SHIFT
+SI_MESGQ
+SI_QUEUE
+SI_SIGIO
+SI_TIMER
+SI_TKILL
+SI_USER
 SND_CNT
 SND_MAX
 SOCK_CLOEXEC
@@ -3359,6 +3369,12 @@ TP_STATUS_USER
 TP_STATUS_VLAN_TPID_VALID
 TP_STATUS_VLAN_VALID
 TP_STATUS_WRONG_FORMAT
+TRAP_BRANCH
+TRAP_BRKPT
+TRAP_HWBKPT
+TRAP_PERF
+TRAP_TRACE
+TRAP_UNK
 TUNATTACHFILTER
 TUNDETACHFILTER
 TUNGETFEATURES

libc-test/semver/solarish.txt

@@ -15,6 +15,16 @@ LIO_READ
 LIO_WAIT
 LIO_WRITE
 PIPE_BUF
+POSIX_SPAWN_NOEXECERR_NP
+POSIX_SPAWN_NOSIGCHLD_NP
+POSIX_SPAWN_RESETIDS
+POSIX_SPAWN_SETPGROUP
+POSIX_SPAWN_SETSCHEDPARAM
+POSIX_SPAWN_SETSCHEDULER
+POSIX_SPAWN_SETSIGDEF
+POSIX_SPAWN_SETSIGIGN_NP
+POSIX_SPAWN_SETSIGMASK
+POSIX_SPAWN_WAITPID_NP
 SIGEV_PORT
 SIGRTMAX
 SIGRTMIN
@@ -34,5 +44,32 @@ bind
 in6_pktinfo
 in_pktinfo
 lio_listio
+posix_spawn
+posix_spawn_file_actions_addchdir
+posix_spawn_file_actions_addchdir_np
+posix_spawn_file_actions_addclose
+posix_spawn_file_actions_addclosefrom_np
+posix_spawn_file_actions_adddup2
+posix_spawn_file_actions_addfchdir
+posix_spawn_file_actions_addopen
+posix_spawn_file_actions_destroy
+posix_spawn_file_actions_init
+posix_spawnattr_destroy
+posix_spawnattr_getflags
+posix_spawnattr_getpgroup
+posix_spawnattr_getschedparam
+posix_spawnattr_getschedpolicy
+posix_spawnattr_getsigdefault
+posix_spawnattr_getsigignore_np
+posix_spawnattr_getsigmask
+posix_spawnattr_init
+posix_spawnattr_setflags
+posix_spawnattr_setpgroup
+posix_spawnattr_setschedparam
+posix_spawnattr_setschedpolicy
+posix_spawnattr_setsigdefault
+posix_spawnattr_setsigignore_np
+posix_spawnattr_setsigmask
+posix_spawnp
 recvmsg
 sendmsg