fixup failing test, bless error changes

Author: npry

library/alloc/src/raw_vec.rs

@@ -294,7 +294,7 @@ impl<T, A: Allocator> RawVec<T, A> {
     /// be careful.
     #[inline]
     pub const fn ptr(&self) -> *mut T {
-        self.inner.as_ptr()
+        self.inner.ptr()
     }
 
     #[inline]
@@ -501,8 +501,8 @@ impl<A: Allocator> RawVecInner<A> {
     }
 
     #[inline]
-    fn ptr<T>(&self) -> *mut T {
-        self.non_null::<T>().as_ptr()
+    const fn ptr<T>(&self) -> *mut T {
+        self.ptr.as_ptr() as _
     }
 
     #[inline]
@@ -511,7 +511,7 @@ impl<A: Allocator> RawVecInner<A> {
     }
 
     #[inline]
-    fn capacity(&self, elem_size: usize) -> usize {
+    const fn capacity(&self, elem_size: usize) -> usize {
         if elem_size == 0 { usize::MAX } else { self.cap.0 }
     }
 

tests/ui/consts/issue-94675.rs

@@ -1,6 +1,6 @@
 //@ known-bug: #103507
 
-#![feature(const_trait_impl, const_mut_refs)]
+#![feature(const_trait_impl, const_mut_refs, const_vec_string_slice)]
 
 struct Foo<'a> {
     bar: &'a mut Vec<usize>,

tests/ui/consts/issue-94675.stderr

@@ -1,11 +1,3 @@
-error[E0015]: cannot call non-const fn `Vec::<u32>::len` in constant functions
-  --> $DIR/issue-94675.rs:11:27
-   |
-LL |         self.bar[0] = baz.len();
-   |                           ^^^^^
-   |
-   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
-
 error[E0015]: cannot call non-const operator in constant functions
   --> $DIR/issue-94675.rs:11:17
    |
@@ -20,6 +12,6 @@ help: add `#![feature(effects)]` to the crate attributes to enable
 LL + #![feature(effects)]
    |
 
-error: aborting due to 2 previous errors
+error: aborting due to 1 previous error
 
 For more information about this error, try `rustc --explain E0015`.