Auto merge of #69182 - Dylan-DPC:rollup-ifsa9fx, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #64069 (Added From<Vec<NonZeroU8>> for CString)
 - #66721 (implement LowerExp and UpperExp for integers)
 - #69106 (Fix std::fs::copy on WASI target)
 - #69154 (Avoid calling `fn_sig` on closures)
 - #69166 (Check `has_typeck_tables` before calling `typeck_tables_of`)
 - #69180 (Suggest a comma if a struct initializer field fails to parse)

Failed merges:

r? @ghost

1 files changed, 9 insertions, 1 deletions

diff --git a/src/libstd/sys/wasi/fs.rs b/src/libstd/sys/wasi/fs.rs
index 04bfdf67e12..a11f61fdd69 100644
--- a/src/libstd/sys/wasi/fs.rs
+++ b/src/libstd/sys/wasi/fs.rs
@@ -12,7 +12,6 @@ use crate::sys::time::SystemTime;
 use crate::sys::unsupported;
 use crate::sys_common::FromInner;
 
-pub use crate::sys_common::fs::copy;
 pub use crate::sys_common::fs::remove_dir_all;
 
 pub struct File {
@@ -647,3 +646,12 @@ fn open_parent(p: &Path) -> io::Result<(ManuallyDrop<WasiFd>, PathBuf)> {
 pub fn osstr2str(f: &OsStr) -> io::Result<&str> {
     f.to_str().ok_or_else(|| io::Error::new(io::ErrorKind::Other, "input must be utf-8"))
 }
+
+pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
+    use crate::fs::File;
+
+    let mut reader = File::open(from)?;
+    let mut writer = File::create(to)?;
+
+    io::copy(&mut reader, &mut writer)
+}