1 files changed, 36 insertions, 0 deletions
diff --git a/library/std/src/sys/unsupported/common.rs b/library/std/src/sys/unsupported/common.rs
new file mode 100644
index 000000000..4c9ade4a8
--- /dev/null
+++ b/library/std/src/sys/unsupported/common.rs
@@ -0,0 +1,36 @@
+use crate::io as std_io;
+
+pub mod memchr {
+    pub use core::slice::memchr::{memchr, memrchr};
+}
+
+// SAFETY: must be called only once during runtime initialization.
+// NOTE: this is not guaranteed to run, for example when Rust code is called externally.
+pub unsafe fn init(_argc: isize, _argv: *const *const u8) {}
+
+// SAFETY: must be called only once during runtime cleanup.
+// NOTE: this is not guaranteed to run, for example when the program aborts.
+pub unsafe fn cleanup() {}
+
+pub fn unsupported<T>() -> std_io::Result<T> {
+    Err(unsupported_err())
+}
+
+pub fn unsupported_err() -> std_io::Error {
+    std_io::const_io_error!(
+        std_io::ErrorKind::Unsupported,
+        "operation not supported on this platform",
+    )
+}
+
+pub fn decode_error_kind(_code: i32) -> crate::io::ErrorKind {
+    crate::io::ErrorKind::Uncategorized
+}
+
+pub fn abort_internal() -> ! {
+    core::intrinsics::abort();
+}
+
+pub fn hashmap_random_keys() -> (u64, u64) {
+    (1, 2)
+}