musl: time64: adjust struct timespec definition

This is equivalent to upstream commit bminor/musl@9b2921b.

Author: xbjfk

rustc-ice-2025-06-23T11_50_21-19565.txt

@@ -0,0 +1,27 @@
+thread 'rustc' panicked at compiler/rustc_middle/src/query/on_disk_cache.rs:511:5:
+assertion `left == right` failed
+  left: 0
+ right: 1002111927320821928687967599834759150
+stack backtrace:
+   0:     0x7f4357159785 - <unknown>
+   1:     0x7f43571596d5 - std::backtrace::Backtrace::force_capture::hef0840345d34355a
+   2:     0x7f435489b1ce - <unknown>
+   3:     0x7f4357176833 - std::panicking::rust_panic_with_hook::h402df430f77b139b
+   4:     0x7f435717650a - <unknown>
+   5:     0x7f4357173a89 - std::sys::backtrace::__rust_end_short_backtrace::hd6ee186b09085420
+   6:     0x7f43571761cf - rust_begin_unwind
+   7:     0x7f435394e480 - core::panicking::panic_fmt::h250731373fbf7c0c
+   8:     0x7f435394e8fa - core::panicking::assert_failed_inner::h0b63c78fb2eab9e0
+   9:     0x7f4355988747 - core[1da3e9e537ec24d4]::panicking::assert_failed::<u128, u128>
+  10:     0x7f435596522c - <rustc_middle[d6b0322ea3151aaa]::query::on_disk_cache::OnDiskCache>::new
+  11:     0x7f43551dbd52 - rustc_incremental[539479ebccffad45]::persist::load::load_query_result_cache
+  12:     0x7f43547c8a7b - <unknown>
+  13:     0x7f435487f596 - <unknown>
+  14:     0x7f4354815a97 - <unknown>
+  15:     0x7f4354830651 - std[6956e2ccddace8c]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[8bbda2bbdfb85682]::util::run_in_thread_with_globals<rustc_interface[8bbda2bbdfb85682]::util::run_in_thread_pool_with_globals<rustc_interface[8bbda2bbdfb85682]::interface::run_compiler<(), rustc_driver_impl[a38dd6409c8212bc]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
+  16:     0x7f4354832693 - <unknown>
+  17:     0x7f435718212b - <unknown>
+
+
+rustc version: 1.86.0-nightly (05f9846f8 2025-03-31) (gentoo)
+platform: x86_64-unknown-linux-musl

rustc-ice-2025-06-23T11_50_22-19666.txt

@@ -0,0 +1,27 @@
+thread 'rustc' panicked at compiler/rustc_middle/src/query/on_disk_cache.rs:511:5:
+assertion `left == right` failed
+  left: 0
+ right: 1002111927320821928687967599834759150
+stack backtrace:
+   0:     0x7fae09159785 - <unknown>
+   1:     0x7fae091596d5 - std::backtrace::Backtrace::force_capture::hef0840345d34355a
+   2:     0x7fae0689b1ce - <unknown>
+   3:     0x7fae09176833 - std::panicking::rust_panic_with_hook::h402df430f77b139b
+   4:     0x7fae0917650a - <unknown>
+   5:     0x7fae09173a89 - std::sys::backtrace::__rust_end_short_backtrace::hd6ee186b09085420
+   6:     0x7fae091761cf - rust_begin_unwind
+   7:     0x7fae0594e480 - core::panicking::panic_fmt::h250731373fbf7c0c
+   8:     0x7fae0594e8fa - core::panicking::assert_failed_inner::h0b63c78fb2eab9e0
+   9:     0x7fae07988747 - core[1da3e9e537ec24d4]::panicking::assert_failed::<u128, u128>
+  10:     0x7fae0796522c - <rustc_middle[d6b0322ea3151aaa]::query::on_disk_cache::OnDiskCache>::new
+  11:     0x7fae071dbd52 - rustc_incremental[539479ebccffad45]::persist::load::load_query_result_cache
+  12:     0x7fae067c8a7b - <unknown>
+  13:     0x7fae0687f596 - <unknown>
+  14:     0x7fae06815a97 - <unknown>
+  15:     0x7fae06830651 - std[6956e2ccddace8c]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[8bbda2bbdfb85682]::util::run_in_thread_with_globals<rustc_interface[8bbda2bbdfb85682]::util::run_in_thread_pool_with_globals<rustc_interface[8bbda2bbdfb85682]::interface::run_compiler<(), rustc_driver_impl[a38dd6409c8212bc]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
+  16:     0x7fae06832693 - <unknown>
+  17:     0x7fae0918212b - <unknown>
+
+
+rustc version: 1.86.0-nightly (05f9846f8 2025-03-31) (gentoo)
+platform: x86_64-unknown-linux-musl

src/unix/mod.rs

@@ -71,10 +71,14 @@ s! {
     #[cfg(not(target_env = "gnu"))]
     pub struct timespec {
         pub tv_sec: time_t,
+        #[cfg(all(musl32_time64, target_endian = "big"))]
+        __pad0: u32,
         #[cfg(all(target_arch = "x86_64", target_pointer_width = "32"))]
         pub tv_nsec: i64,
         #[cfg(not(all(target_arch = "x86_64", target_pointer_width = "32")))]
         pub tv_nsec: c_long,
+        #[cfg(all(musl32_time64, target_endian = "little"))]
+        __pad0: u32,
     }
 
     pub struct rlimit {