Auto merge of #55462 - pietroalbini:rollup, r=pietroalbini

Rollup of 9 pull requests

Successful merges:

 - #54965 (update tcp stream documentation)
 - #55269 (fix typos in various places)
 - #55384 (Avoid unnecessary allocations in `float_lit` and `integer_lit`.)
 - #55423 (back out bogus `Ok`-wrapping suggestion on `?` arm type mismatch)
 - #55426 (Make a bunch of trivial methods of NonNull be `#[inline]`)
 - #55438 (Avoid directly catching BaseException in bootstrap configure script)
 - #55439 (Remove unused sys import from generate-deriving-span-tests)
 - #55440 (Remove unreachable code in hasClass function in Rustdoc)
 - #55447 (Fix invalid path in generate-deriving-span-tests.py.)

Failed merges:

r? @ghost

src/bootstrap/configure.py

@@ -397,7 +397,7 @@ def is_number(value):
   try:
     float(value)
     return True
-  except:
+  except ValueError:
     return False
 
 # Here we walk through the constructed configuration we have from the parsed

src/etc/generate-deriving-span-tests.py

@@ -18,10 +18,10 @@
 sample usage: src/etc/generate-deriving-span-tests.py
 """
 
-import sys, os, datetime, stat, re
+import os, datetime, stat, re
 
 TEST_DIR = os.path.abspath(
-    os.path.join(os.path.dirname(__file__), '../test/compile-fail'))
+    os.path.join(os.path.dirname(__file__), '../test/ui/derives/'))
 
 YEAR = datetime.datetime.now().year
 

src/libcore/ptr.rs

@@ -2867,6 +2867,7 @@ impl<T: Sized> NonNull<T> {
     /// sentinel value. Types that lazily allocate must track initialization by
     /// some other means.
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[inline]
     pub fn dangling() -> Self {
         unsafe {
             let ptr = mem::align_of::<T>() as *mut T;
@@ -2882,12 +2883,14 @@ impl<T: ?Sized> NonNull<T> {
     ///
     /// `ptr` must be non-null.
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[inline]
     pub const unsafe fn new_unchecked(ptr: *mut T) -> Self {
         NonNull { pointer: NonZero(ptr as _) }
     }
 
     /// Creates a new `NonNull` if `ptr` is non-null.
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[inline]
     pub fn new(ptr: *mut T) -> Option<Self> {
         if !ptr.is_null() {
             Some(NonNull { pointer: NonZero(ptr as _) })
@@ -2898,6 +2901,7 @@ impl<T: ?Sized> NonNull<T> {
 
     /// Acquires the underlying `*mut` pointer.
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[inline]
     pub fn as_ptr(self) -> *mut T {
         self.pointer.0 as *mut T
     }
@@ -2908,6 +2912,7 @@ impl<T: ?Sized> NonNull<T> {
     /// it were actually an instance of T that is getting borrowed. If a longer
     /// (unbound) lifetime is needed, use `&*my_ptr.as_ptr()`.
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[inline]
     pub unsafe fn as_ref(&self) -> &T {
         &*self.as_ptr()
     }
@@ -2918,12 +2923,14 @@ impl<T: ?Sized> NonNull<T> {
     /// it were actually an instance of T that is getting borrowed. If a longer
     /// (unbound) lifetime is needed, use `&mut *my_ptr.as_ptr()`.
     #[stable(feature = "nonnull", since = "1.25.0")]
+    #[inline]
     pub unsafe fn as_mut(&mut self) -> &mut T {
         &mut *self.as_ptr()
     }
 
     /// Cast to a pointer of another type
     #[stable(feature = "nonnull_cast", since = "1.27.0")]
+    #[inline]
     pub fn cast<U>(self) -> NonNull<U> {
         unsafe {
             NonNull::new_unchecked(self.as_ptr() as *mut U)
@@ -2963,48 +2970,55 @@ impl<T: ?Sized> Eq for NonNull<T> {}
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<T: ?Sized> PartialEq for NonNull<T> {
+    #[inline]
     fn eq(&self, other: &Self) -> bool {
         self.as_ptr() == other.as_ptr()
     }
 }
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<T: ?Sized> Ord for NonNull<T> {
+    #[inline]
     fn cmp(&self, other: &Self) -> Ordering {
         self.as_ptr().cmp(&other.as_ptr())
     }
 }
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<T: ?Sized> PartialOrd for NonNull<T> {
+    #[inline]
     fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
         self.as_ptr().partial_cmp(&other.as_ptr())
     }
 }
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<T: ?Sized> hash::Hash for NonNull<T> {
+    #[inline]
     fn hash<H: hash::Hasher>(&self, state: &mut H) {
         self.as_ptr().hash(state)
     }
 }
 
 #[unstable(feature = "ptr_internals", issue = "0")]
 impl<T: ?Sized> From<Unique<T>> for NonNull<T> {
+    #[inline]
     fn from(unique: Unique<T>) -> Self {
         NonNull { pointer: unique.pointer }
     }
 }
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<'a, T: ?Sized> From<&'a mut T> for NonNull<T> {
+    #[inline]
     fn from(reference: &'a mut T) -> Self {
         NonNull { pointer: NonZero(reference as _) }
     }
 }
 
 #[stable(feature = "nonnull", since = "1.25.0")]
 impl<'a, T: ?Sized> From<&'a T> for NonNull<T> {
+    #[inline]
     fn from(reference: &'a T) -> Self {
         NonNull { pointer: NonZero(reference as _) }
     }

src/librustc/infer/error_reporting/mod.rs

@@ -479,17 +479,7 @@ impl<'a, 'gcx, 'tcx> InferCtxt<'a, 'gcx, 'tcx> {
                         err.span_label(arm_span, msg);
                     }
                 }
-                hir::MatchSource::TryDesugar => {
-                    // Issue #51632
-                    if let Ok(try_snippet) = self.tcx.sess.source_map().span_to_snippet(arm_span) {
-                        err.span_suggestion_with_applicability(
-                            arm_span,
-                            "try wrapping with a success variant",
-                            format!("Ok({})", try_snippet),
-                            Applicability::MachineApplicable,
-                        );
-                    }
-                }
+                hir::MatchSource::TryDesugar => {}
                 _ => {
                     let msg = "match arm with an incompatible type";
                     if self.tcx.sess.source_map().is_multiline(arm_span) {

src/librustdoc/html/static/main.js

@@ -93,11 +93,6 @@
                 var end = start + className.length;
                 return !(end < elemClass.length && elemClass[end] !== ' ');
             }
-            if (start > 0 && elemClass[start - 1] !== ' ') {
-                return false;
-            }
-            var end = start + className.length;
-            return !(end < elemClass.length && elemClass[end] !== ' ');
         }
         return false;
     }

src/libsyntax/parse/mod.rs

@@ -494,8 +494,17 @@ fn float_lit(s: &str, suffix: Option<Symbol>, diag: Option<(Span, &Handler)>)
                  -> Option<ast::LitKind> {
     debug!("float_lit: {:?}, {:?}", s, suffix);
     // FIXME #2252: bounds checking float literals is deferred until trans
-    let s = s.chars().filter(|&c| c != '_').collect::<String>();
-    filtered_float_lit(Symbol::intern(&s), suffix, diag)
+
+    // Strip underscores without allocating a new String unless necessary.
+    let s2;
+    let s = if s.chars().any(|c| c == '_') {
+        s2 = s.chars().filter(|&c| c != '_').collect::<String>();
+        &s2
+    } else {
+        s
+    };
+
+    filtered_float_lit(Symbol::intern(s), suffix, diag)
 }
 
 /// Parse a string representing a byte literal into its final form. Similar to `char_lit`
@@ -591,8 +600,14 @@ fn integer_lit(s: &str, suffix: Option<Symbol>, diag: Option<(Span, &Handler)>)
                    -> Option<ast::LitKind> {
     // s can only be ascii, byte indexing is fine
 
-    let s2 = s.chars().filter(|&c| c != '_').collect::<String>();
-    let mut s = &s2[..];
+    // Strip underscores without allocating a new String unless necessary.
+    let s2;
+    let mut s = if s.chars().any(|c| c == '_') {
+        s2 = s.chars().filter(|&c| c != '_').collect::<String>();
+        &s2
+    } else {
+        s
+    };
 
     debug!("integer_lit: {}, {:?}", s, suffix);
 

src/test/ui/issues/issue-51632-try-desugar-incompatible-types.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// run-rustfix
-
 #![allow(dead_code)]
 
 fn missing_discourses() -> Result<isize, ()> {
@@ -19,7 +17,6 @@ fn missing_discourses() -> Result<isize, ()> {
 fn forbidden_narratives() -> Result<isize, ()> {
     missing_discourses()?
     //~^ ERROR try expression alternatives have incompatible types
-    //~| HELP try wrapping with a success variant
 }
 
 fn main() {}

src/test/ui/issues/issue-51632-try-desugar-incompatible-types.stderr

@@ -1,11 +1,8 @@
 error[E0308]: try expression alternatives have incompatible types
-  --> $DIR/issue-51632-try-desugar-incompatible-types.rs:20:5
+  --> $DIR/issue-51632-try-desugar-incompatible-types.rs:18:5
    |
 LL |     missing_discourses()?
-   |     ^^^^^^^^^^^^^^^^^^^^^
-   |     |
-   |     expected enum `std::result::Result`, found isize
-   |     help: try wrapping with a success variant: `Ok(missing_discourses()?)`
+   |     ^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found isize
    |
    = note: expected type `std::result::Result<isize, ()>`
               found type `isize`