Rollup merge of rust-lang#129207 - GrigorenkoPV:elided-is-named, r=cjgillot

Lint that warns when an elided lifetime ends up being a named lifetime

As suggested in rust-lang#48686 (comment)

Fixes rust-lang#48686

Author: matthiaskrgr

Diff for: alloc/src/string.rs

@@ -2313,7 +2313,7 @@ impl<'b> Pattern for &'b String {
     }
 
     #[inline]
-    fn strip_suffix_of<'a>(self, haystack: &'a str) -> Option<&str>
+    fn strip_suffix_of<'a>(self, haystack: &'a str) -> Option<&'a str>
     where
         Self::Searcher<'a>: core::str::pattern::ReverseSearcher<'a>,
     {

Diff for: core/src/fmt/rt.rs

@@ -110,43 +110,43 @@ impl<'a> Argument<'a> {
     }
 
     #[inline(always)]
-    pub fn new_display<'b, T: Display>(x: &'b T) -> Argument<'_> {
+    pub fn new_display<'b, T: Display>(x: &'b T) -> Argument<'b> {
         Self::new(x, Display::fmt)
     }
     #[inline(always)]
-    pub fn new_debug<'b, T: Debug>(x: &'b T) -> Argument<'_> {
+    pub fn new_debug<'b, T: Debug>(x: &'b T) -> Argument<'b> {
         Self::new(x, Debug::fmt)
     }
     #[inline(always)]
-    pub fn new_debug_noop<'b, T: Debug>(x: &'b T) -> Argument<'_> {
+    pub fn new_debug_noop<'b, T: Debug>(x: &'b T) -> Argument<'b> {
         Self::new(x, |_, _| Ok(()))
     }
     #[inline(always)]
-    pub fn new_octal<'b, T: Octal>(x: &'b T) -> Argument<'_> {
+    pub fn new_octal<'b, T: Octal>(x: &'b T) -> Argument<'b> {
         Self::new(x, Octal::fmt)
     }
     #[inline(always)]
-    pub fn new_lower_hex<'b, T: LowerHex>(x: &'b T) -> Argument<'_> {
+    pub fn new_lower_hex<'b, T: LowerHex>(x: &'b T) -> Argument<'b> {
         Self::new(x, LowerHex::fmt)
     }
     #[inline(always)]
-    pub fn new_upper_hex<'b, T: UpperHex>(x: &'b T) -> Argument<'_> {
+    pub fn new_upper_hex<'b, T: UpperHex>(x: &'b T) -> Argument<'b> {
         Self::new(x, UpperHex::fmt)
     }
     #[inline(always)]
-    pub fn new_pointer<'b, T: Pointer>(x: &'b T) -> Argument<'_> {
+    pub fn new_pointer<'b, T: Pointer>(x: &'b T) -> Argument<'b> {
         Self::new(x, Pointer::fmt)
     }
     #[inline(always)]
-    pub fn new_binary<'b, T: Binary>(x: &'b T) -> Argument<'_> {
+    pub fn new_binary<'b, T: Binary>(x: &'b T) -> Argument<'b> {
         Self::new(x, Binary::fmt)
     }
     #[inline(always)]
-    pub fn new_lower_exp<'b, T: LowerExp>(x: &'b T) -> Argument<'_> {
+    pub fn new_lower_exp<'b, T: LowerExp>(x: &'b T) -> Argument<'b> {
         Self::new(x, LowerExp::fmt)
     }
     #[inline(always)]
-    pub fn new_upper_exp<'b, T: UpperExp>(x: &'b T) -> Argument<'_> {
+    pub fn new_upper_exp<'b, T: UpperExp>(x: &'b T) -> Argument<'b> {
         Self::new(x, UpperExp::fmt)
     }
     #[inline(always)]