Auto merge of #56557 - pietroalbini:rollup, r=pietroalbini

Rollup of 11 pull requests

Successful merges:

 - #56315 (Rustdoc inline macro reexport)
 - #56332 ([rustdoc] Specific crate search)
 - #56362 (Stabilise exhaustive integer patterns)
 - #56426 (libsyntax_pos: A few tweaks)
 - #56441 (rustbuild: Fix issues with compiler docs)
 - #56446 (pass the parameter environment to `traits::find_associated_item`)
 - #56500 (cleanup: remove static lifetimes from consts)
 - #56525 (Avoid extra copy and syscall in std::env::current_exe)
 - #56528 (Remove unused dependency (rustc_lint -> rustc_mir))
 - #56548 (Optimized string FromIterator + Extend impls)
 - #56553 (Don't print the profiling summary to stdout when -Zprofile-json is set)

Failed merges:

r? @ghost

1 files changed, 8 insertions, 5 deletions

diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index b387a8d59a5..03e81a720dc 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -283,11 +283,14 @@ pub fn current_exe() -> io::Result<PathBuf> {
 
 #[cfg(any(target_os = "linux", target_os = "android", target_os = "emscripten"))]
 pub fn current_exe() -> io::Result<PathBuf> {
-    let selfexe = PathBuf::from("/proc/self/exe");
-    if selfexe.exists() {
-        ::fs::read_link(selfexe)
-    } else {
-        Err(io::Error::new(io::ErrorKind::Other, "no /proc/self/exe available. Is /proc mounted?"))
+    match ::fs::read_link("/proc/self/exe") {
+        Err(ref e) if e.kind() == io::ErrorKind::NotFound => {
+            Err(io::Error::new(
+                io::ErrorKind::Other,
+                "no /proc/self/exe available. Is /proc mounted?"
+            ))
+        },
+        other => other,
     }
 }