Remove useless osttr->cstr->osstr roundtrip

src/bin/fish.rs

@@ -441,21 +441,6 @@ fn fish_parse_opt(args: &mut [WString], opts: &mut FishCmdOpts) -> ControlFlow<i
     ControlFlow::Continue(optind)
 }
 
-fn cstr_from_osstr(s: &OsStr) -> CString {
-    // is there no better way to do this?
-    // this is
-    // CStr::from_bytes_until_nul(s.as_bytes()).unwrap()
-    // except we need to add the nul if it is not present
-    CString::new(
-        s.as_bytes()
-            .iter()
-            .cloned()
-            .take_while(|&c| c != b'\0')
-            .collect::<Vec<_>>(),
-    )
-    .unwrap()
-}
-
 fn main() {
     PROGRAM_NAME.set(L!("fish")).unwrap();
     if !cfg!(small_main_stack) {
@@ -617,8 +602,7 @@ fn throwing_main() -> i32 {
 
     // TODO: if-let-chains
     if opts.profile_startup_output.is_some() && opts.profile_startup_output != opts.profile_output {
-        let s = cstr_from_osstr(&opts.profile_startup_output.unwrap());
-        parser.emit_profiling(s.as_bytes());
+        parser.emit_profiling(&opts.profile_startup_output.unwrap());
 
         // If we are profiling both, ensure the startup data only
         // ends up in the startup file.
@@ -720,8 +704,7 @@ fn throwing_main() -> i32 {
     );
 
     if let Some(profile_output) = opts.profile_output {
-        let s = cstr_from_osstr(&profile_output);
-        parser.emit_profiling(s.as_bytes());
+        parser.emit_profiling(&profile_output);
     }
 
     history::save_all();

src/parser.rs

@@ -39,7 +39,6 @@ use std::cell::{Ref, RefCell, RefMut};
 use std::ffi::{CStr, OsStr};
 use std::num::NonZeroU32;
 use std::os::fd::{AsRawFd, OwnedFd, RawFd};
-use std::os::unix::prelude::OsStrExt;
 use std::rc::Rc;
 #[cfg(target_has_atomic = "64")]
 use std::sync::atomic::AtomicU64;
@@ -976,17 +975,17 @@ impl Parser {
     }
 
     /// Output profiling data to the given filename.
-    pub fn emit_profiling(&self, path: &[u8]) {
+    pub fn emit_profiling(&self, path: &OsStr) {
         // Save profiling information. OK to not use CLO_EXEC here because this is called while fish is
         // exiting (and hence will not fork).
-        let f = match std::fs::File::create(OsStr::from_bytes(path)) {
+        let f = match std::fs::File::create(path) {
             Ok(f) => f,
             Err(err) => {
                 FLOG!(
                     warning,
                     wgettext_fmt!(
                         "Could not write profiling information to file '%s': %s",
-                        &String::from_utf8_lossy(path),
+                        path.to_string_lossy(),
                         err.to_string()
                     )
                 );